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• Intermittent PolicyException: Execution permission cannot be acquired.

  - by Aaron Maenpaa

  We are intermittently seeing the following exception shortly after an App Pool recycle in an ASP.NET application: System.Configuration.ConfigurationErrorsException: Could not load file or assembly 'Microsoft.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. Failed to grant permission to execute. (Exception from HRESULT: 0x80131418) ---> System.IO.FileLoadException: Could not load file or assembly 'Microsoft.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. Failed to grant permission to execute. (Exception from HRESULT: 0x80131418) File name: 'Microsoft.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' ---> System.Security.Policy.PolicyException: Execution permission cannot be acquired. at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Boolean checkExecutionPermission) at System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Int32& securitySpecialFlags, Boolean checkExecutionPermission) at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.Load(String assemblyString) at System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) The specific DLL that fails to load varies from incident to incident, but is always one referenced by the main assembly. We're running on ASP.NET 3.5 on Windows Server 2008. This seems to happen in batches affecting some but not all of sites on the same App Pool. We have a large number of sites all running the same code. Once a site has failed to load a DLL it throws up a Yellow Screen of Death until the next App Pool recycle. We haven't been able to reproduce this behavior and the sites seem to work fine for days or weeks at a time (and many App Pool recycles) before failing. Has anybody else seen similar behavior? Update: We've tried reproducing the failure by setting up a few hundred sites and writing a script to hit them repeatedly while recycling the App Pool once every couple of minutes and were unable to accomplish much other than loading down the server's CPU for a few days straight. We then tried messing (locking one of the DLLs, changing the file permissions) with the copies of the DLLs that ASP.NET makes and managed to reproduce similar behavior but not the same exception. Does anybody have any ideas on how to adjust the security policy to get it to throw a System.Security.Policy.PolicyException: Execution permission cannot be acquired. when loading a specific DLL?

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• Why Moq is throwing "expected Invocation on the mock at least once". Where as it is being set once,e

  - by Mohit

  Following is the code. create a class lib add the ref to NUnit framework 2.5.3.9345 and Moq.dll 4.0.0.0 and paste the following code. Try running it on my machine it throws TestCase 'MoqTest.TryClassTest.IsMessageNotNull' failed: Moq.MockException : Expected invocation on the mock at least once, but was never performed: v = v.Model = It.Is(value(Moq.It+<c__DisplayClass21[MoqTest.GenInfo]).match) at Moq.Mock.ThrowVerifyException(IProxyCall expected, Expression expression, Times times, Int32 callCount) at Moq.Mock.VerifyCalls(Interceptor targetInterceptor, MethodCall expected, Expression expression, Times times) at Moq.Mock.VerifySet[T](Mock1 mock, Action1 setterExpression, Times times, String failMessage) at Moq.Mock1.VerifySet(Action`1 setterExpression) Class1.cs(22,0): at MoqTest.TryClassTest.IsMessageNotNull() using System; using System.Collections.Generic; using System.Linq; using System.Text; using Moq; using NUnit.Framework; namespace MoqTest { [TestFixture] public class TryClassTest { [Test] public void IsMessageNotNull() { var mockView = new Mock<IView<GenInfo>>(); mockView.Setup(v => v.ModuleId).Returns(""); TryPresenter tryPresenter = new TryPresenter(mockView.Object); tryPresenter.SetMessage(new object(), new EventArgs()); // mockView.VerifySet(v => v.Message, Times.AtLeastOnce()); mockView.VerifySet(v => v.Model = It.Is<GenInfo>(x => x != null)); } } public class TryPresenter { private IView<GenInfo> view; public TryPresenter(IView<GenInfo> view) { this.view = view; } public void SetMessage(object sender, EventArgs e) { this.view.Model = null; } } public class MyView : IView<GenInfo> { #region Implementation of IView<GenInfo> public string ModuleId { get; set; } public GenInfo Model { get; set; } #endregion } public interface IView<T> { string ModuleId { get; set; } T Model { get; set; } } public class GenInfo { public String Message { get; set; } } } And if you change one line mockView.VerifySet(v => v.Model = It.Is<GenInfo>(x => x != null)); to mockView.VerifySet(v => v.Model, Times.AtLeastOnce()); it works fine. I think Exception is incorrect.

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• subsonic.migrations and Oracle XE

  - by andrecarlucci

  Hello, Probably I'm doing something wrong but here it goes: I'm trying to create a database using subsonic.migrations in an OracleXE version 10.2.0.1.0. I have ODP v 10.2.0.2.20 installed. This is my app.config: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" requirePermission="false"/> </configSections> <connectionStrings> <add name="test" connectionString="Data Source=XE; User Id=test; Password=test;"/> </connectionStrings> <SubSonicService defaultProvider="test"> <providers> <clear/> <add name="test" type="SubSonic.OracleDataProvider, SubSonic" connectionStringName="test" generatedNamespace="testdb"/> </providers> </SubSonicService> </configuration> And that's my first migration: public class Migration001_Init : Migration { public override void Up() { //Create the records table TableSchema.Table records = CreateTable("asdf"); records.AddColumn("RecordName"); } public override void Down() { DropTable("asdf"); } } When I run the sonic.exe, I get this exception: Setting ConfigPath: 'App.config' Building configuration from D:\Users\carlucci\Documents\Visual Studio 2008\Projects\Wum\Wum.Migration\App.config Adding connection to test ERROR: Trying to execute migrate Error Message: System.Data.OracleClient.OracleException: ORA-02253: especifica‡Æo de restri‡Æo nÆo permitida aqui at System.Data.OracleClient.OracleConnection.CheckError(OciErrorHandle errorHandle, Int32 rc) at System.Data.OracleClient.OracleCommand.Execute(OciStatementHandle statementHandle, CommandBehavior behavior, Boolean needRowid, OciRowidDescriptor& rowidDescriptor, ArrayList& resultParameterOrdinals) at System.Data.OracleClient.OracleCommand.ExecuteNonQueryInternal(Boolean needRowid, OciRowidDescriptor& rowidDescriptor) at System.Data.OracleClient.OracleCommand.ExecuteNonQuery() at SubSonic.OracleDataProvider.ExecuteQuery(QueryCommand qry) in D:\@SubSonic\SubSonic\SubSonic\DataProviders\OracleDataProvider.cs:line 350 at SubSonic.DataService.ExecuteQuery(QueryCommand cmd) in D:\@SubSonic\SubSonic\SubSonic\DataProviders\DataService.cs:line 544 at SubSonic.Migrations.Migrator.CreateSchemaInfo(String providerName) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 249 at SubSonic.Migrations.Migrator.GetCurrentVersion(String providerName) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 232 at SubSonic.Migrations.Migrator.Migrate(String providerName, String migrationDirectory, Nullable`1 toVersion) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 50 at SubSonic.SubCommander.Program.Migrate() in D:\@SubSonic\SubSonic\SubCommander\Program.cs:line 264 at SubSonic.SubCommander.Program.Main(String[] args) in D:\@SubSonic\SubSonic\SubCommander\Program.cs:line 90 Execution Time: 379ms What am I doing wrong? Thanks a lot for any help :) Andre Carlucci UPDATE: As pointed by Anton, the problem is the subsonic OracleSqlGenerator. It is trying to create the schema table using this sql: CREATE TABLE SubSonicSchemaInfo ( version int NOT NULL CONSTRAINT DF_SubSonicSchemaInfo_version DEFAULT (0) ) Which doesn't work on oracle. The correct sql would be: CREATE TABLE SubSonicSchemaInfo ( version int DEFAULT (0), constraint DF_SubSonicSchemaInfo_version primary key (version) ) The funny thing is that since this is the very first sql executed by subsonic migrations, NOBODY EVER TESTED it on oracle.

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• How do you Send More that 20 Parameters to a Stored Procedure Using ODP.Net?

  - by discwiz

  Switching from Microsofts Oracle Driver to ODP.NET version 10.2.0.100. After changing the data types to OracleDBTypes in a procedure, that worked perficetly using System.Data.OracleClient, the procedure fails if we try and pass in more that 20 parameters. The error returned is: ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'ADD_TARP_EVENT' ORA-06550: line 1, column 7: PL/SQL: Statement ignorede If we reduce the number of parameters to less than 20 it works. Is this a known issue? Thanks, Dave Here the code for creating the parameters: Shared Function CreateTarpEventCommand(ByVal aTarpEvent As TARPEventType) As OracleCommand Dim cmd As New OracleCommand With aTarpEvent cmd.Parameters.Add(New OracleParameter("I_facID_C", OracleDbType.Char)).Value = .FacilityShortName cmd.Parameters.Add(New OracleParameter("I_facName_VC", OracleDbType.Varchar2)).Value = .FacilityLongName cmd.Parameters.Add(New OracleParameter("I_client_VC", OracleDbType.Varchar2)).Value = .ComputerNameTarpIsRunningOn cmd.Parameters.Add(New OracleParameter("I_TARP_Version_VC", OracleDbType.Varchar2)).Value = .TarpVersionNumber cmd.Parameters.Add(New OracleParameter("I_NAS_Type_VC", OracleDbType.Varchar2)).Value = .FacilityNASSystemType cmd.Parameters.Add(New OracleParameter("I_Aircraft1_Callsign_VC", OracleDbType.Varchar2)).Value = .Aircraft1Callsign If .Aircraft1Type Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Aircraft1_Type_VC", OracleDbType.Varchar2)).Value = .Aircraft1Type End If If .Aircraft1Category Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Aircraft1_Cat_VC", OracleDbType.Varchar2)).Value = .Aircraft1Category End If cmd.Parameters.Add(New OracleParameter("I_Aircraft2_Callsign_VC", OracleDbType.Varchar2)).Value = .Aircraft2Callsign If .Aircraft2Type Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Aircraft2_Type_VC", OracleDbType.Varchar2)).Value = .Aircraft2Type End If If .Aircraft2Category Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Aircraft2_Cat_VC", OracleDbType.Varchar2)).Value = .Aircraft2Category End If If .SensorShortName Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Sensor_Name_VC", OracleDbType.Varchar2)).Value = .SensorShortName End If If .TarpConfigurationName Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_TARP_Config_Name_VC", OracleDbType.Varchar2)).Value = .TarpConfigurationName End If If .EntryCreatorID Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Create_VC", OracleDbType.Varchar2)).Value = .EntryCreatorID End If If .LogAction Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Log_Action_VC", OracleDbType.Varchar2)).Value = .LogAction End If cmd.Parameters.Add(New OracleParameter("I_TARP_Mode_VC", OracleDbType.Varchar2)).Value = .TarpOperatingMode cmd.Parameters.Add(New OracleParameter("I_Min_Loss_N", OracleDbType.Decimal)).Value = .ClosestMeasureOfLoSS If .MapName Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_MAP_NAME_VC", OracleDbType.Varchar2)).Value = .MapName End If If .TarpConfigurationFileHash Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_CONFIG_HASH_VC", OracleDbType.Varchar2)).Value = .TarpConfigurationFileHash End If Dim aDate As OracleDate = CType(.LossEventsMessages(0).LossEventTime, System.DateTime) cmd.Parameters.Add(New OracleParameter("I_FIRST_LOSS_EVENT_DATE", OracleDbType.Date)).Value = aDate cmd.Parameters.Add(New OracleParameter("I_FIRST_LOSS_EVENT_MS_N", OracleDbType.Int32)).Value = .LossEventsMessages(0).LossEventMilliSeconds If .ZippedMapFiles Is Nothing Then cmd.Parameters.Add(New OracleParameter("I_Map_File_BL", OracleDbType.Blob)).Value = .ZippedMapFiles End If cmd.Parameters.Add(New OracleParameter("I_TARP_Package_BL", OracleDbType.Blob)).Value = .ZippedTarpPackageWithoutMaps cmd.Parameters.Add(New OracleParameter("rs_RESULTS", OracleDbType.RefCursor)).Direction = ParameterDirection.Output End With Return cmd End Function And here is the code for executing the procedure: Dim workingDataSet As New DataSet Dim oracleConnection As New OracleConnection Dim cmd As New OracleCommand Dim oracleDataAdapter As New OracleDataAdapter Try Using oracleConnection oracleConnection.ConnectionString = System.Configuration.ConfigurationManager.AppSettings("MasterConnectionODT") cmd = HelperDB.CreateTarpEventCommand(TarpEvent) cmd.Connection = oracleConnection cmd.CommandText = "LOADER.ADD_TARP_EVENT" cmd.CommandType = CommandType.StoredProcedure Using oracleConnection oracleConnection.Open() Dim aTransation As OracleTransaction = oracleConnection.BeginTransaction(IsolationLevel.ReadCommitted) Try Using oracleDataAdapter oracleDataAdapter = New OracleDataAdapter(cmd) oracleDataAdapter.TableMappings.Add("Results", "rs_Max") oracleDataAdapter.Fill(workingDataSet) ....

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• IXmlSerializable Dictionary

  - by Shimmy

  I was trying to create a generic Dictionary that implements IXmlSerializable. Here is my trial: Sub Main() Dim z As New SerializableDictionary(Of String, String) z.Add("asdf", "asd") Console.WriteLine(z.Serialize) End Sub Result: <?xml version="1.0" encoding="utf-16"?><Entry key="asdf" value="asd" /> I placed a breakpoint on top of the WriteXml method and I see that when it stops, the writer contains no data at all, and IMHO it should contain the root element and the xml declaration. <Serializable()> _ Public Class SerializableDictionary(Of TKey, TValue) : Inherits Dictionary(Of TKey, TValue) : Implements IXmlSerializable Private Const EntryString As String = "Entry" Private Const KeyString As String = "key" Private Const ValueString As String = "value" Private Shared ReadOnly AttributableTypes As Type() = New Type() {GetType(Boolean), GetType(Byte), GetType(Char), GetType(DateTime), GetType(Decimal), GetType(Double), GetType([Enum]), GetType(Guid), GetType(Int16), GetType(Int32), GetType(Int64), GetType(SByte), GetType(Single), GetType(String), GetType(TimeSpan), GetType(UInt16), GetType(UInt32), GetType(UInt64)} Private Shared ReadOnly GetIsAttributable As Predicate(Of Type) = Function(t) AttributableTypes.Contains(t) Private Shared ReadOnly IsKeyAttributable As Boolean = GetIsAttributable(GetType(TKey)) Private Shared ReadOnly IsValueAttributable As Boolean = GetIsAttributable(GetType(TValue)) Private Shared ReadOnly GetElementName As Func(Of Boolean, String) = Function(isKey) If(isKey, KeyString, ValueString) Public Function GetSchema() As System.Xml.Schema.XmlSchema Implements System.Xml.Serialization.IXmlSerializable.GetSchema Return Nothing End Function Public Sub WriteXml(ByVal writer As XmlWriter) Implements IXmlSerializable.WriteXml For Each entry In Me writer.WriteStartElement(EntryString) WriteData(IsKeyAttributable, writer, True, entry.Key) WriteData(IsValueAttributable, writer, False, entry.Value) writer.WriteEndElement() Next End Sub Private Sub WriteData(Of T)(ByVal attributable As Boolean, ByVal writer As XmlWriter, ByVal isKey As Boolean, ByVal value As T) Dim name = GetElementName(isKey) If attributable Then writer.WriteAttributeString(name, value.ToString) Else Dim serializer As New XmlSerializer(GetType(T)) writer.WriteStartElement(name) serializer.Serialize(writer, value) writer.WriteEndElement() End If End Sub Public Sub ReadXml(ByVal reader As XmlReader) Implements IXmlSerializable.ReadXml Dim empty = reader.IsEmptyElement reader.Read() If empty Then Exit Sub Clear() While reader.NodeType <> XmlNodeType.EndElement While reader.NodeType = XmlNodeType.Whitespace reader.Read() Dim key = ReadData(Of TKey)(IsKeyAttributable, reader, True) Dim value = ReadData(Of TValue)(IsValueAttributable, reader, False) Add(key, value) If Not IsKeyAttributable AndAlso Not IsValueAttributable Then reader.ReadEndElement() Else reader.Read() While reader.NodeType = XmlNodeType.Whitespace reader.Read() End While End While reader.ReadEndElement() End While End Sub Private Function ReadData(Of T)(ByVal attributable As Boolean, ByVal reader As XmlReader, ByVal isKey As Boolean) As T Dim name = GetElementName(isKey) Dim type = GetType(T) If attributable Then Return Convert.ChangeType(reader.GetAttribute(name), type) Else Dim serializer As New XmlSerializer(type) While reader.Name <> name reader.Read() End While reader.ReadStartElement(name) Dim value = serializer.Deserialize(reader) reader.ReadEndElement() Return value End If End Function Public Shared Function Serialize(ByVal dictionary As SerializableDictionary(Of TKey, TValue)) As String Dim sb As New StringBuilder(1024) Dim sw As New StringWriter(sb) Dim xs As New XmlSerializer(GetType(SerializableDictionary(Of TKey, TValue))) xs.Serialize(sw, dictionary) sw.Dispose() Return sb.ToString End Function Public Shared Function Deserialize(ByVal xml As String) As SerializableDictionary(Of TKey, TValue) Dim xs As New XmlSerializer(GetType(SerializableDictionary(Of TKey, TValue))) Dim xr As New XmlTextReader(xml, XmlNodeType.Document, Nothing) Return xs.Deserialize(xr) xr.Close() End Function Public Function Serialize() As String Dim sb As New StringBuilder Dim xw = XmlWriter.Create(sb) WriteXml(xw) xw.Close() Return sb.ToString End Function Public Sub Parse(ByVal xml As String) Dim xr As New XmlTextReader(xml, XmlNodeType.Document, Nothing) ReadXml(xr) xr.Close() End Sub End Class

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• Weird exception in linkbutton in a datalist

  - by user308806

  Dear all, I have written this datalist : <div class="story" runat="server"> <asp:DataList ID="DataList2" runat="server" Height="16px" Width="412px"> <SeparatorTemplate> <hr /> </SeparatorTemplate> <ItemTemplate> <asp:LinkButton ID="LinkButton1" runat ="server" Text='<%# Eval("Name") %>' PostBackUrl='<%#Eval("Url")%>' /> <br /> Description: <asp:Label ID="new" Text='<%#Eval("Description") %>' runat="server" /> </ItemTemplate> </asp:DataList> </div> It raises an exception saying that the linkbutton has to be placed in a tag that contains runat="server" although it exists. Here is the trace [HttpException (0x80004005): Le contrôle 'DataList2_ctl00_LinkButton1' de type 'LinkButton' doit être placé dans une balise form avec runat=server.] System.Web.UI.Page.VerifyRenderingInServerForm(Control control) +8689747 System.Web.UI.WebControls.LinkButton.AddAttributesToRender(HtmlTextWriter writer) +39 System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer) +20 System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +20 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19 System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +10 System.Web.UI.WebControls.DataListItem.RenderItemInternal(HtmlTextWriter writer, Boolean extractRows, Boolean tableLayout) +51 System.Web.UI.WebControls.DataListItem.RenderItem(HtmlTextWriter writer, Boolean extractRows, Boolean tableLayout) +57 System.Web.UI.WebControls.DataList.System.Web.UI.WebControls.IRepeatInfoUser.RenderItem(ListItemType itemType, Int32 repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer) +64 System.Web.UI.WebControls.RepeatInfo.RenderVerticalRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) +262 System.Web.UI.WebControls.RepeatInfo.RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) +27 System.Web.UI.WebControls.DataList.RenderContents(HtmlTextWriter writer) +208 System.Web.UI.WebControls.BaseDataList.Render(HtmlTextWriter writer) +30 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19 System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +32 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19 System.Web.UI.Page.Render(HtmlTextWriter writer) +29 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266

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• Adding OutputCache to a WebForm crashes my site :(

  - by Pure.Krome

  Hi folks, When I add either ... <%@ OutputCache Duration="600" Location="Any" VaryByParam="*" %> or <%@ OutputCache CacheProfile="CmsArticlesListOrItem" %> (.. and this into the web.config file...) <caching> <outputCacheSettings> <outputCacheProfiles> <add name="CmsArticlesListOrItem" duration="600" varyByParam="*" /> </outputCacheProfiles> </outputCacheSettings> <sqlCacheDependency ........ ></sqlCacheDependency </caching> my page/site crashes with the following error:- Source: System.Web ---------------------------------------------------------------------------- TargetSite: System.Web.DirectoryMonitor FindDirectoryMonitor(System.String, Boolean, Boolean) ---------------------------------------------------------------------------- Message:System.Web.HttpException: Directory 'C:\Web Sites\My Site Foo - Main Site\Controls\InfoAdvice' does not exist. Failed to start monitoring file changes. at System.Web.FileChangesMonitor.FindDirectoryMonitor(String dir, Boolean addIfNotFound, Boolean throwOnError) at System.Web.FileChangesMonitor.StartMonitoringPath(String alias, FileChangeEventHandler callback, FileAttributesData& fad) at System.Web.Caching.CacheDependency.Init(Boolean isPublic, String[] filenamesArg, String[] cachekeysArg, CacheDependency dependency, DateTime utcStart) at System.Web.Caching.CacheDependency..ctor(Int32 dummy, String[] filenames, DateTime utcStart) at System.Web.Hosting.MapPathBasedVirtualPathProvider.GetCacheDependency(String virtualPath, IEnumerable virtualPathDependencies, DateTime utcStart) at System.Web.ResponseDependencyList.CreateCacheDependency(CacheDependencyType dependencyType, CacheDependency dependency) at System.Web.HttpResponse.CreateCacheDependencyForResponse(CacheDependency dependencyVary) at System.Web.Caching.OutputCacheModule.InsertResponse(HttpResponse response, HttpContext context, String keyRawResponse, HttpCachePolicySettings settings, CachedVary cachedVary, CachedRawResponse memoryRawResponse) at System.Web.Caching.OutputCacheModule.OnLeave(Object source, EventArgs eventArgs) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Ok .. so for some reason, the OutputCache wants a folder/file to be there? Well, i've had this site live for around 3 years and i'm pretty sure that the folders \Controls and \Controls\InfoAdvice doesn't exist on my production server. On my localhost, it sure does .. and contains a large list of ascx controls. But they don't exist on my live server. So ... what is going on here? Can anyone please help? Oh :) Before someone suggests I create those two folders and even stick a random file in those folders .. and have some random text in those random files .. i've done that and it doesn't seem to work, still :( Please Help !

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• Nhibernate one-to-many with table per subclass

  - by Wayne

  I am customizing N2CMS's database structure, and met with an issue. The two classes are listed below. public class Customer : ContentItem { public IList<License> Licenses { get; set; } } public class License : ContentItem { public Customer Customer { get; set; } } The nhibernate mapping are as follows. <class name="N2.ContentItem,N2" table="n2item"> <cache usage="read-write" /> <id name="ID" column="ID" type="Int32" unsaved-value="0" access="property"> <generator class="native" /> </id> <discriminator column="Type" type="String" /> </class> <subclass name="My.Customer,My" extends="N2.ContentItem,N2" discriminator-value="Customer"> <join table="Customer"> <key column="ItemID" /> <bag name="Licenses" generic="true" inverse="true"> <key column="CustomerID" /> <one-to-many class="My.License,My"/> </bag> </join> </subclass> <subclass name="My.License,My" extends="N2.ContentItem,N2" discriminator-value="License"> <join table="License" fetch="select"> <key column="ItemID" /> <many-to-one name="Customer" column="CustomerID" class="My.Customer,My" not-null="false" /> </join> </subclass> Then, when get an instance of Customer, the customer.Licenses is always empty, but actually there are licenses in the database for the customer. When I check the nhibernate log file, I find that the SQL query is like: SELECT licenses0_.CustomerID as CustomerID1_, licenses0_.ID as ID1_, licenses0_.ID as ID2_0_, licenses0_1_.CustomerID as CustomerID7_0_, FROM n2item licenses0_ inner join License licenses0_1_ on licenses0_.ID = licenses0_1_.ItemID WHERE licenses0_.CustomerID = 12 /* @p0 */ It seems that nhibernate believes that the CustomerID is in the 'n2item' table. I don't know why, but to make it work, I think the SQL should be something like this. SELECT licenses0_.ID as ID1_, licenses0_.ID as ID2_0_, licenses0_1_.CustomerID as CustomerID7_0_, FROM n2item licenses0_ inner join License licenses0_1_ on licenses0_.ID = licenses0_1_.ItemID WHERE licenses0_1_.CustomerID = 12 /* @p0 */ Could any one point out what's wrong with my mappings? And how can I get the correct licenses of one customer? Thanks in advance.

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• System.IO.IOException: file used by another process

  - by Srodriguez

  Dear all, I've been working in this small piece of code that seems trivial but still i cannot really see where is the problem. My functions does a pretty simple thing. Opens a file, copy its contents, replace a string inside and copy it back to the original file (a simple search and replace inside a text file then). I didn't really know how to do that as I'm adding lines to the original file, so i just create a copy of the file, (file.temp) copy also a backup (file.temp) then delete the original file(file) and copy the file.temp to file. I get an exception while doing the delete of the file. Here is the sample code: private static bool modifyFile(FileInfo file, string extractedMethod, string modifiedMethod) { Boolean result = false; FileStream fs = new FileStream(file.FullName + ".tmp", FileMode.Create, FileAccess.Write); StreamWriter sw = new StreamWriter(fs); StreamReader streamreader = file.OpenText(); String originalPath = file.FullName; string input = streamreader.ReadToEnd(); Console.WriteLine("input : {0}", input); String tempString = input.Replace(extractedMethod, modifiedMethod); Console.WriteLine("replaced String {0}", tempString); try { sw.Write(tempString); sw.Flush(); sw.Close(); sw.Dispose(); fs.Close(); fs.Dispose(); streamreader.Close(); streamreader.Dispose(); File.Copy(originalPath, originalPath + ".old", true); FileInfo newFile = new FileInfo(originalPath + ".tmp"); File.Delete(originalPath); File.Copy(fs., originalPath, true); result = true; } catch (Exception ex) { Console.WriteLine(ex); } return result; }` And the related exception System.IO.IOException: The process cannot access the file 'E:\mypath\myFile.cs' because it is being used by another process. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.Delete(String path) at callingMethod.modifyFile(FileInfo file, String extractedMethod, String modifiedMethod) Normally these errors come from unclosed file streams, but I've taken care of that. I guess I've forgotten an important step but cannot figure out where. Thank you very much for your help,

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• IXmlSerializable Dictionary problem

  - by Shimmy

  I was trying to create a generic Dictionary that implements IXmlSerializable. Here is my trial: Sub Main() Dim z As New SerializableDictionary(Of String, String) z.Add("asdf", "asd") Console.WriteLine(z.Serialize) End Sub Result: <?xml version="1.0" encoding="utf-16"?><Entry key="asdf" value="asd" /> I placed a breakpoint on top of the WriteXml method and I see that when it stops, the writer contains no data at all, and IMHO it should contain the root element and the xml declaration. <Serializable()> _ Public Class SerializableDictionary(Of TKey, TValue) : Inherits Dictionary(Of TKey, TValue) : Implements IXmlSerializable Private Const EntryString As String = "Entry" Private Const KeyString As String = "key" Private Const ValueString As String = "value" Private Shared ReadOnly AttributableTypes As Type() = New Type() {GetType(Boolean), GetType(Byte), GetType(Char), GetType(DateTime), GetType(Decimal), GetType(Double), GetType([Enum]), GetType(Guid), GetType(Int16), GetType(Int32), GetType(Int64), GetType(SByte), GetType(Single), GetType(String), GetType(TimeSpan), GetType(UInt16), GetType(UInt32), GetType(UInt64)} Private Shared ReadOnly GetIsAttributable As Predicate(Of Type) = Function(t) AttributableTypes.Contains(t) Private Shared ReadOnly IsKeyAttributable As Boolean = GetIsAttributable(GetType(TKey)) Private Shared ReadOnly IsValueAttributable As Boolean = GetIsAttributable(GetType(TValue)) Private Shared ReadOnly GetElementName As Func(Of Boolean, String) = Function(isKey) If(isKey, KeyString, ValueString) Public Function GetSchema() As System.Xml.Schema.XmlSchema Implements System.Xml.Serialization.IXmlSerializable.GetSchema Return Nothing End Function Public Sub WriteXml(ByVal writer As XmlWriter) Implements IXmlSerializable.WriteXml For Each entry In Me writer.WriteStartElement(EntryString) WriteData(IsKeyAttributable, writer, True, entry.Key) WriteData(IsValueAttributable, writer, False, entry.Value) writer.WriteEndElement() Next End Sub Private Sub WriteData(Of T)(ByVal attributable As Boolean, ByVal writer As XmlWriter, ByVal isKey As Boolean, ByVal value As T) Dim name = GetElementName(isKey) If attributable Then writer.WriteAttributeString(name, value.ToString) Else Dim serializer As New XmlSerializer(GetType(T)) writer.WriteStartElement(name) serializer.Serialize(writer, value) writer.WriteEndElement() End If End Sub Public Sub ReadXml(ByVal reader As XmlReader) Implements IXmlSerializable.ReadXml Dim empty = reader.IsEmptyElement reader.Read() If empty Then Exit Sub Clear() While reader.NodeType <> XmlNodeType.EndElement While reader.NodeType = XmlNodeType.Whitespace reader.Read() Dim key = ReadData(Of TKey)(IsKeyAttributable, reader, True) Dim value = ReadData(Of TValue)(IsValueAttributable, reader, False) Add(key, value) If Not IsKeyAttributable AndAlso Not IsValueAttributable Then reader.ReadEndElement() Else reader.Read() While reader.NodeType = XmlNodeType.Whitespace reader.Read() End While End While reader.ReadEndElement() End While End Sub Private Function ReadData(Of T)(ByVal attributable As Boolean, ByVal reader As XmlReader, ByVal isKey As Boolean) As T Dim name = GetElementName(isKey) Dim type = GetType(T) If attributable Then Return Convert.ChangeType(reader.GetAttribute(name), type) Else Dim serializer As New XmlSerializer(type) While reader.Name <> name reader.Read() End While reader.ReadStartElement(name) Dim value = serializer.Deserialize(reader) reader.ReadEndElement() Return value End If End Function Public Shared Function Serialize(ByVal dictionary As SerializableDictionary(Of TKey, TValue)) As String Dim sb As New StringBuilder(1024) Dim sw As New StringWriter(sb) Dim xs As New XmlSerializer(GetType(SerializableDictionary(Of TKey, TValue))) xs.Serialize(sw, dictionary) sw.Dispose() Return sb.ToString End Function Public Shared Function Deserialize(ByVal xml As String) As SerializableDictionary(Of TKey, TValue) Dim xs As New XmlSerializer(GetType(SerializableDictionary(Of TKey, TValue))) Dim xr As New XmlTextReader(xml, XmlNodeType.Document, Nothing) Return xs.Deserialize(xr) xr.Close() End Function Public Function Serialize() As String Dim sb As New StringBuilder Dim xw = XmlWriter.Create(sb) WriteXml(xw) xw.Close() Return sb.ToString End Function Public Sub Parse(ByVal xml As String) Dim xr As New XmlTextReader(xml, XmlNodeType.Document, Nothing) ReadXml(xr) xr.Close() End Sub End Class

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• Some questions about writing on ASP.NET response stream

  - by vtortola

  Hi, I'm making tests with ASP.NET HttpHandler for download a file writting directly on the response stream, and I'm not pretty sure about the way I'm doing it. This is a example method, in the future the file could be stored in a BLOB in the database: public void GetFile(HttpResponse response) { String fileName = "example.iso"; response.ClearHeaders(); response.ClearContent(); response.ContentType = "application/octet-stream"; response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName); using (FileStream fs = new FileStream(Path.Combine(HttpContext.Current.Server.MapPath("~/App_Data"), fileName), FileMode.Open)) { Byte[] buffer = new Byte[4096]; Int32 readed = 0; while ((readed = fs.Read(buffer, 0, buffer.Length)) > 0) { response.OutputStream.Write(buffer, 0, readed); response.Flush(); } } } But, I'm not sure if this is correct or there is a better way to do it. My questions are: When I open the url with the browser, appears the "Save File" dialog... but it seems like the server has started already to push data into the stream before I click "Save", is that normal? If I remove the line"response.Flush()", when I open the url with the browser, ... I see how the web server is pushing data but the "Save File" dialog doesn't come up, (or at least not in a reasonable time fashion) why? When I open the url with a WebRequest object, I see that the HttpResponse.ContentLength is "-1", although I can read the stream and get the file. What is the meaning of -1? When is HttpResponse.ContentLength going to show the length of the response? For example, I have a method that retrieves a big xml compresed with deflate as a binary stream, but in that case... when I access it with a WebRequest, in the HttpResponse I can actually see the ContentLength with the length of the stream, why? What is the optimal length for the Byte[] array that I use as buffer for optimal performance in a web server? I've read that is between 4K and 8K... but which factors should I consider to make the correct decision. Does this method bloat the IIS or client memory usage? or is it actually buffering the transference correctly? Sorry for so many questions, I'm pretty new in web development :P Cheers.

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• the HTTP request is unauthorized with client authentication scheme 'Anonymous'

  - by user1246429

  I use firstdata webservice API.I use C# client call firstdata webservice API with WCF. But show error message: "But show error message "System.ServiceModel.Security.MessageSecurityException: The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was ''. --- System.Net.WebException: The remote server returned an error: (401) Unauthorized. at System.Net.HttpWebRequest.GetResponse() at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout) --- End of inner exception stack trace --- Server stack trace: at System.ServiceModel.Channels.HttpChannelUtilities.ValidateAuthentication(HttpWebRequest request, HttpWebResponse response, WebException responseException, HttpChannelFactory factory) at System.ServiceModel.Channels.HttpChannelUtilities.ValidateRequestReplyResponse(HttpWebRequest request, HttpWebResponse response, HttpChannelFactory factory, WebException responseException, ChannelBinding channelBinding) at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout) at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout) at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at com.firstdata.globalgatewaye4.api.ServiceSoap.SendAndCommit(SendAndCommitRequest request) at com.firstdata.globalgatewaye4.api.ServiceSoapClient.com.firstdata.globalgatewaye4.api.ServiceSoap.SendAndCommit (SendAndCommitRequest request) at com.firstdata.globalgatewaye4.api.ServiceSoapClient.SendAndCommit(Transaction SendAndCommitSource)" My web.config info below: <behaviors> <endpointBehaviors> <behavior name="FDGGBehavior"> <clientCredentials> <clientCertificate findValue="WS1909642825._.1" storeLocation="LocalMachine" x509FindType="FindBySubjectName" storeName="TrustedPeople" /> <serviceCertificate> <authentication certificateValidationMode="PeerTrust" /> </serviceCertificate> </clientCredentials> </behavior> </endpointBehaviors> </behaviors> <binding name="ServiceSoap" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <security mode="TransportWithMessageCredential"> <transport clientCredentialType="Certificate" proxyCredentialType="Ntlm" /> <message clientCredentialType="UserName" algorithmSuite="Default" /> </security> </binding> <endpoint address="https://api.globalgatewaye4.firstdata.com/transaction/v11" binding="basicHttpBinding" bindingConfiguration="ServiceSoap" contract="com.firstdata.globalgatewaye4.api.ServiceSoap" name="ServiceSoap" behaviorConfiguration="FDGGBehavior" /> How can resolve question?

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• Replace column value with description

  - by shoden

  How to replace cell value with their description. This is my grid <telerik:RadGrid ID="RadGrid1" runat="server" DataSourceID="SqlDataSource1" GridLines="None"> <HeaderContextMenu EnableAutoScroll="True"> </HeaderContextMenu> <MasterTableView AutoGenerateColumns="False" DataKeyNames="OrderID" DataSourceID="SqlDataSource1"> <RowIndicatorColumn> <HeaderStyle Width="20px"></HeaderStyle> </RowIndicatorColumn> <ExpandCollapseColumn> <HeaderStyle Width="20px"></HeaderStyle> </ExpandCollapseColumn> <Columns> <telerik:GridBoundColumn DataField="OrderID" DataType="System.Int32" HeaderText="OrderID" ReadOnly="True" SortExpression="OrderID" UniqueName="OrderID"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="CustomerID" HeaderText="CustomerID" SortExpression="CustomerID" UniqueName="CustomerID"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="OrderDate" DataType="System.DateTime" HeaderText="OrderDate" SortExpression="OrderDate" UniqueName="OrderDate"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="RequiredDate" DataType="System.DateTime" HeaderText="RequiredDate" SortExpression="RequiredDate" UniqueName="RequiredDate"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ShipName" HeaderText="ShipName" SortExpression="ShipName" UniqueName="ShipName"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ShipAddress" HeaderText="ShipAddress" SortExpression="ShipAddress" UniqueName="ShipAddress"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ShipCity" HeaderText="ShipCity" SortExpression="ShipCity" UniqueName="ShipCity"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ShipRegion" HeaderText="ShipRegion" SortExpression="ShipRegion" UniqueName="ShipRegion"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ShipPostalCode" HeaderText="ShipPostalCode" SortExpression="ShipPostalCode" UniqueName="ShipPostalCode"> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="ShipCountry" HeaderText="ShipCountry" SortExpression="ShipCountry" UniqueName="ShipCountry"> </telerik:GridBoundColumn> </Columns> </MasterTableView> </telerik:RadGrid> This grid will load Orders table. How to replace CustomerID with CompanyName which is come from Customers table during run time?

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• Winforms connection strings from App.config

  - by Geo Ego

  I have a Winforms app that I am developing in C# that will serve as a frontend for a SQL Server 2005 database. I rolled the executable out to a test machine and ran it. It worked perfectly fine on the test machine up until the last round of changes that I made. However, now on the test machine, it throws the following exception immediately upon opening: System.NullReferenceException: Object reference not set to an instance of an object. at PSRD_Specs_Database_Administrat.mainMenu.mainMenu_Load(Object sender, EventArgs e) at System.Windows.Forms.Form.OnLoad(EventArgs e) at System.Windows.Forms.Form.OnCreateControl() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.WmShowWindow(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ContainerControl.WndProc(Message& m) at System.Windows.Forms.Form.WmShowWindow(Message& m) at System.Windows.Forms.Form.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) The only thing that I changed in this version that pertains to mainMenu_Load is the way that the connection string to the database is called. Previously, I had set a string with the connection string on every form that I needed to call it from, like: string conString = "Data Source = SHAREPOINT;Trusted_Connection = yes;" + "database = CustomerDatabase;connection timeout = 15"; As my app grew and I added forms to it, I decided to add an App.config to the project. I defined the connection string in it: <connectionStrings> <add name="conString" providerName="System.Data.SqlClient" connectionString="Data Source = SHAREPOINT;Trusted_Connection = yes;database = CustomerDatabase;connection timeout = 15" /> </connectionStrings> I then created a static string that would return the conString: public static string GetConnectionString(string conName) { string strReturn = string.Empty; if (!(string.IsNullOrEmpty(conName))) { strReturn = ConfigurationManager.ConnectionStrings[conName].ConnectionString; } else { strReturn = ConfigurationManager.ConnectionStrings["conString"].ConnectionString; } return strReturn; } I removed the conString variable and now call the connection string like so: PublicMethods.GetConnectionString("conString").ToString() It appears that this is giving me the error. I changed these instances to directly call the connection string from App.config without using GetConnectionString. For instance, in a SQLConnection: using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conString"].ConnectionString)) This also threw the exception. However, when I went back to using the conString variable on each form, I had no issues. What I don't understand is why all three methods work fine on my development machine, while using the App.config directly or via the static string I created throw exceptions.

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• Adding OutputCache to an ASP.NET WebForm crashes my site :(

  - by Pure.Krome

  Hi folks, When I add either one of these ... <%@ OutputCache Duration="600" Location="Any" VaryByParam="*" %> or <%@ OutputCache CacheProfile="CmsArticlesListOrItem" %> (.. and this into the web.config file...) <caching> <outputCacheSettings> <outputCacheProfiles> <add name="CmsArticlesListOrItem" duration="600" varyByParam="*" /> </outputCacheProfiles> </outputCacheSettings> <sqlCacheDependency ........ ></sqlCacheDependency </caching> my page/site crashes with the following error:- Source: System.Web ---------------------------------------------------------------------------- TargetSite: System.Web.DirectoryMonitor FindDirectoryMonitor(System.String, Boolean, Boolean) ---------------------------------------------------------------------------- Message:System.Web.HttpException: Directory 'C:\Web Sites\My Site Foo - Main Site\Controls\InfoAdvice' does not exist. Failed to start monitoring file changes. at System.Web.FileChangesMonitor.FindDirectoryMonitor(String dir, Boolean addIfNotFound, Boolean throwOnError) at System.Web.FileChangesMonitor.StartMonitoringPath(String alias, FileChangeEventHandler callback, FileAttributesData& fad) at System.Web.Caching.CacheDependency.Init(Boolean isPublic, String[] filenamesArg, String[] cachekeysArg, CacheDependency dependency, DateTime utcStart) at System.Web.Caching.CacheDependency..ctor(Int32 dummy, String[] filenames, DateTime utcStart) at System.Web.Hosting.MapPathBasedVirtualPathProvider.GetCacheDependency(String virtualPath, IEnumerable virtualPathDependencies, DateTime utcStart) at System.Web.ResponseDependencyList.CreateCacheDependency(CacheDependencyType dependencyType, CacheDependency dependency) at System.Web.HttpResponse.CreateCacheDependencyForResponse(CacheDependency dependencyVary) at System.Web.Caching.OutputCacheModule.InsertResponse(HttpResponse response, HttpContext context, String keyRawResponse, HttpCachePolicySettings settings, CachedVary cachedVary, CachedRawResponse memoryRawResponse) at System.Web.Caching.OutputCacheModule.OnLeave(Object source, EventArgs eventArgs) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Ok .. so for some reason, the OutputCache wants a folder/file to be there? Well, i've had this site live for around 3 years and i'm pretty sure that the folders \Controls and \Controls\InfoAdvice doesn't exist on my production server. On my localhost, it sure does .. and contains a large list of ascx controls. But they don't exist on my live server. So ... what is going on here? Can anyone please help? Oh :) Before someone suggests I create those two folders and even stick a random file in those folders .. and have some random text in those random files .. i've done that and it doesn't seem to work, still :( Please Help !

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• ArgumentNullException when accessing a FormView instance

  - by David

  Background: I have an ASP.NET page which has a numebr of user controls within it. There are 2 user controls which are of interest. I need to display either one of them or neither of them, depending on the record selected previously. In the user controls I need to set properties of some controls which are in a FormView. So in my user control code-behind I have a number of properties which look something like this: Private ReadOnly Property phSectionReports() As PlaceHolder Get Return fvConfirmationReport.FindControl("phSectionReports") End Get End Property The problem: I am having problems with this Property. Sometimes it is returning Nothing/Null and sometimes it is throwing a NullArgumentException with the message "Value cannot be null. Parameter name: container". The exception is coming from trying to reference the fvConfirmationReport variable. fvConfirmationReport is the ID of my FormView in the page itself. So I am really after things to look for and if any ideas what sort of conditions (e.g stage in page cycle, etc.) might lead to this? An example stack trace is included below. ASP.NET 3.5 SP1, VB.NET Thanks, StackTrace: at System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) at System.Web.UI.WebControls.GridView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) at System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) at System.Web.UI.WebControls.GridView.PerformDataBinding(IEnumerable data) at System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) at System.Web.UI.WebControls.DataBoundControl.PerformSelect() at System.Web.UI.WebControls.BaseDataBoundControl.DataBind() at System.Web.UI.WebControls.GridView.DataBind() at System.Web.UI.Control.DataBindChildren() at System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) ...snip... at System.Web.UI.Control.DataBind() at System.Web.UI.Control.DataBindChildren() at System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) at System.Web.UI.WebControls.FormView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) at System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) at System.Web.UI.WebControls.FormView.PerformDataBinding(IEnumerable data) at System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) at System.Web.UI.WebControls.DataBoundControl.PerformSelect() at System.Web.UI.WebControls.BaseDataBoundControl.DataBind() at System.Web.UI.WebControls.FormView.DataBind() at System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() at System.Web.UI.WebControls.FormView.EnsureDataBound() at System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Control.FindControl(String id) at App_UserControls_xxx_ucConfirmationForm.get_phSectionReports() in ucConfirmationForm.ascx.vb:line 343 at App_UserControls_xxx_ucConfirmationForm.Page_Load(Object sender, EventArgs e) in ucConfirmationForm.ascx.vb:line 412 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() ...snip... at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

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• Can't connect in C# and google spreadsheet api

  - by RockySanders99

  Trying to access google spreadsheets using their api. following their example, the code doesnt work, and its not obvious why. All I'm trying to do is to connect, and I keep getting back the same error. This is with their code set as of 4/15/10. Can anyone offer any suggestion on what I'm doing wrong? CodE: using System; using Google.GData.Client; using Google.GData.Extensions; using Google.GData.Spreadsheets; namespace google_spreadsheet { class Program { static void Main(string[] args) { SpreadsheetsService myService = new SpreadsheetsService("MySpreadsheet" ); myService.setUserCredentials("[email protected]", "xxxxxxx"); string token1 = myService.QueryClientLoginToken(); Console.WriteLine("token is {0}", token1); Console.ReadLine(); SpreadsheetQuery query = new SpreadsheetQuery(); SpreadsheetFeed feed = myService.Query(query); Console.WriteLine("list"); foreach (SpreadsheetEntry entry in feed.Entries) { Console.WriteLine("Value: {0}", entry.Title.Text); When I run this, it keeps erroring out at the myService.Query statement, with the following error: Google.GData.Client.GDataRequestException was unhandled Message=Execution of request failed: http://spreadsheets.google.com/feeds/spreadsheets/private/full Source=Google.GData.Client ResponseString=<HTML> <HEAD> <TITLE>Not Found</TITLE> </HEAD> <BODY BGCOLOR="#FFFFFF" TEXT="#000000"> <H1>Not Found</H1> <H2>Error 404</H2> </BODY> </HTML> StackTrace: at Google.GData.Client.GDataRequest.Execute() at Google.GData.Client.GDataGAuthRequest.Execute(Int32 retryCounter) at Google.GData.Client.GDataGAuthRequest.Execute() at Google.GData.Client.Service.Query(Uri queryUri, DateTime ifModifiedSince, String etag, Int64& contentLength) at Google.GData.Client.Service.Query(Uri queryUri, DateTime ifModifiedSince) at Google.GData.Client.Service.Query(FeedQuery feedQuery) at Google.GData.Spreadsheets.SpreadsheetsService.Query(SpreadsheetQuery feedQuery) at google_spreadsheet.Program.Main(String[] args) in C:\Development Items\VS Projects\VS2008\google_spreadsheet\google_spreadsheet\Program.cs:line 21 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: System.Net.WebException Message=The remote server returned an error: (404) Not Found. Source=System StackTrace: at System.Net.HttpWebRequest.GetResponse() at Google.GData.Client.GDataRequest.Execute() InnerException: Yet, I can take the url http://spreadsheets.google.com/feeds/spreadsheets/private/full and manually type it in with my username/password, and it works fine. Any suggestions? thanks rocky sanders

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• WCF Troubleshooting from ASP.NET Client -- Help!

  - by Kobojunkie

  I am trying to call a method in my service that is as below, from an ASP.NET application. public bool ValidateUser(string username, string password) { try { // String CurrentLoggedInWindowsUserName = WindowsIdentity.GetCurrent().Name; // //primary identity of the call // String CurrentServiceSecurityContextPrimaryIdentityName = // ServiceSecurityContext.Current.PrimaryIdentity.Name; // } catch (Exception ex) { FaultExceptionFactory fct = new FaultExceptionFactory(); throw new FaultException<CustomFaultException>(fct.CreateFaultException(ex)); } return false; } The Config for the client end of my service is as below <binding name="WSHttpBinding_IMembershipService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="false" allowCookies="false"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /> <security mode="Message"> <transport clientCredentialType="Windows" proxyCredentialType="None" realm="" /> <message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true" /> </security> </binding> Problem I keep having is when I call it; I get the following exception message. Server Error in '/' Application. The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ServiceModel.CommunicationObjectFaultedException: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. Stack Trace: [CommunicationObjectFaultedException: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.] System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) +7596735 System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) +275 System.ServiceModel.ICommunicationObject.Close(TimeSpan timeout) +0 System.ServiceModel.ClientBase`1.System.ServiceModel.ICommunicationObject. Close(TimeSpan timeout) +142 System.ServiceModel.ClientBase`1.Close() +38 System.ServiceModel.ClientBase`1.System.IDisposable.Dispose() +4 Controls.Membership.accountLogin.ValidateUserCredentials(String UserName, String Password) in C:\ Petition.WebClient\Controls\ Membership\accountLogin.ascx.cs:49 Controls.Membership.accountLogin.Login1_Authenticate(Object sender, AuthenticateEventArgs e) in C:\ WebClient\ Controls\Membership \accountLogin.ascx.cs:55 I am not entirely sure why I keep getting this. Just in case, here is how I call my service from the client private bool ValidateUserCredentials(string UserName, string Password) { bool boolReturnValue = false; using(Members.MembershipServiceClient client = new Controls.Members.MembershipServiceClient()) { try { boolReturnValue = client.ValidateUser(UserName, Password); } catch (FaultException<CustomFaultException> ex) { throw ex; } } return boolReturnValue; } Anyone have any idea what I need to do in this case?

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• Where is the method call in the EXE file?

  - by Victor Hurdugaci

  Introduction After watching this video from LIDNUG, about .NET code protection http://secureteam.net/lidnug_recording/Untitled.swf (especially from 46:30 to 57:30), I would to locate the call to a MessageBox.Show in an EXE I created. The only logic in my "TrialApp.exe" is: public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { MessageBox.Show("This is trial app"); } } Compiled on the Release configuration: http://rapidshare.com/files/392503054/TrialApp.exe.html What I do to locate the call Run the application in WinDBG and break after the message box appears. Get the CLR stack with !clrstack: 0040e840 5e21350b [InlinedCallFrame: 0040e840] System.Windows.Forms.SafeNativeMethods.MessageBox(System.Runtime.InteropServices.HandleRef, System.String, System.String, Int32) 0040e894 5e21350b System.Windows.Forms.MessageBox.ShowCore(System.Windows.Forms.IWin32Window, System.String, System.String, System.Windows.Forms.MessageBoxButtons, System.Windows.Forms.MessageBoxIcon, System.Windows.Forms.MessageBoxDefaultButton, System.Windows.Forms.MessageBoxOptions, Boolean) 0040e898 002701f0 [InlinedCallFrame: 0040e898] 0040e934 002701f0 TrialApp.Form1.Form1_Load(System.Object, System.EventArgs) Get the MethodDesc structure (using the address of Form1_Load) !ip2md 002701f0 MethodDesc: 001762f8 Method Name: TrialApp.Form1.Form1_Load(System.Object, System.EventArgs) Class: 00171678 MethodTable: 00176354 mdToken: 06000005 Module: 00172e9c IsJitted: yes CodeAddr: 002701d0 Transparency: Critical Source file: D:\temp\TrialApp\TrialApp\Form1.cs @ 22 Dump the IL of this method (by MethodDesc) !dumpil 001762f8 IL_0000: ldstr "This is trial app" IL_0005: call System.Windows.Forms.MessageBox::Show IL_000a: pop IL_000b: ret So, as the video mentioned, the call to to Show is 5 bytes from the beginning of the method implementation. Now I open CFFExplorer (just like in the video) and get the RVA of the Form1_Load method: 00002083. After this, I go to Address Converter (again in CFF Explorer) and navigate to offset 00002083. There we have: 32 72 01 00 00 70 28 16 00 00 0A 26 2A 7A 03 2C 13 02 7B 02 00 00 04 2C 0B 02 7B 02 00 00 04 6F 17 00 00 0A 02 03 28 18 00 00 0A 2A 00 03 30 04 00 67 00 00 00 00 00 00 00 02 28 19 00 00 0A 02 In the video is mentioned that the first 12 bytes are for the method header so I skip them 2A 7A 03 2C 13 02 7B 02 00 00 04 2C 0B 02 7B 02 00 00 04 6F 17 00 00 0A 02 03 28 18 00 00 0A 2A 00 03 30 04 00 67 00 00 00 00 00 00 00 02 28 19 00 00 0A 02 5 bytes from the beginning of the implementation should be the opcode for method call (28). Unfortunately, is not there. 02 7B 02 00 00 04 2C 0B 02 7B 02 00 00 04 6F 17 00 00 0A 02 03 28 18 00 00 0A 2A 00 03 30 04 00 67 00 00 00 00 00 00 00 02 28 19 00 00 0A 02 Questions: What am I doing wrong? Why there is no method call at that position in the file? Or maybe the video is missing some information... Why the guy in that video replaces the call with 9 zeros?

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• Binding problem in C# wpf

  - by Cinaird

  I have a problem whit binding in wpf i have a textbox where i can do some input, then i try to bind the textinput to a custom usercontrol. This work for the usercontrol within RowDetailsTemplate but not in the CellTemplate. For each object in the CellTemplate i get this error output: System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=ScaleTextBox'. BindingExpression:Path=Text; DataItem=null; target element is 'Chart' (Name=''); target property is 'MaxValue' (type 'Int32') My code looks like this: XAML <ToolBarTray ToolBarTray.IsLocked="True" DockPanel.Dock="Top" Height="25"> <ToolBar Name="ButtonBar" > <TextBox Height="23" Name="ScaleTextBox" Width="120" Text="400"/> </ToolBar> </ToolBarTray> <DataGrid ItemsSource="{Binding Path=Items}" AutoGenerateColumns="False" IsReadOnly="True" RowHeight="25" RowDetailsVisibilityMode="VisibleWhenSelected"> <DataGrid.RowDetailsTemplate> <DataTemplate> <StackPanel Orientation="Vertical" > <my:UserControl ItemsSource="{Binding Path=Samples}" MaxValue="{Binding ElementName=ScaleTextBox, Path=Text}"/>--> </StackPanel> </DataTemplate> </DataGrid.RowDetailsTemplate> <DataGrid.Columns> <DataGridTemplateColumn MinWidth="150" Header="Chart" > <DataGridTemplateColumn.CellTemplate> <DataTemplate> <my:UserControl ItemsSource="{Binding Path=Samples}" MaxValue="{Binding ElementName=ScaleTextBox, Path=Text}"/><!-- this is the problem --> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> </DataGrid.Columns> </DataGrid> C# public static readonly DependencyProperty MaxValueProperty = DependencyProperty.Register("MaxValue", typeof(int), typeof(PingChart), new FrameworkPropertyMetadata(MaxValuePropertyChanged)); private static void MaxValuePropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e) { Console.WriteLine(e.NewValue); } What do i do wrong?

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• ASP.NET ObjectDataSource, change CommandName property of FromView Button

  - by Tone

  I have an ObjectDataSource that I'm using with a FormView, and it works fine, but i want to change one small thing. On the FormView the button that fires the update has the CommandName attribute set to "Update," but I would like to change that attribute to something other than "Update" - when I do change that attribute the update no longer works. The reason I want to do this is I have multiple FormViews on the same page and need to have multiple update buttons. Below is my code: FormView: <asp:FormView ID="fvGeneralInfo" runat="server" DataSourceID="objInstructorDetails" CssClass="Gridview" OnItemCommand="fvGeneralInfo_ItemCommand" DefaultMode="Edit"> <EditItemTemplate> <table> .... <tr> <td style="text-align:right;"> <asp:Label runat="server" ID="lblGeneralInfoMessage" Text="General Info updated successfully" Visible="false" /> </td> <td> <asp:Button runat="server" ID="btnUpdateGeneralInfo" ValidationGroup="UpdateGeneralInfo" Text="Update" CommandName="Update" /> <asp:Button runat="server" ID="btnCancelGeneralInfo" Text="Cancel" CommandName="CancelGeneralInfo" /> </td> </tr> </table> </EditItemTemplate> </asp:FormView> ObjectDataSource: <asp:ObjectDataSource ID="objInstructorDetails" runat="server" TypeName="AIMLibrary.BLL.Instructor" SelectMethod="GetInstructorDetails" InsertMethod="InsertInstructor" UpdateMethod="UpdateInstructor" OnInserting="objInstructorDetails_OnInserting" OnUpdating="objInstructorDetails_OnUpdating" > <SelectParameters> <asp:QueryStringParameter Name="InstructorId" QueryStringField="InstructorId" /> </SelectParameters> <UpdateParameters> <asp:Parameter Name="instructorId" Type="Int32" /> <asp:Parameter Name="firstName" Type="String" DefaultValue="" /> <asp:Parameter Name="middleName" Type="String" DefaultValue="" /> <asp:Parameter Name="lastName" Type="String" DefaultValue="" /> <asp:Parameter Name="phone" Type="String" DefaultValue="" /> <asp:Parameter Name="email" Type="String" DefaultValue="" /> <asp:Parameter Name="addressLine1" Type="String" DefaultValue="" /> <asp:Parameter Name="addressLine2" Type="String" DefaultValue="" /> <asp:Parameter Name="city" Type="String" DefaultValue="" /> <asp:Parameter Name="state" Type="String" DefaultValue="" /> <asp:Parameter Name="zip" Type="String" DefaultValue="" /> <asp:Parameter Name="abcBoardNumber" Type="String" DefaultValue="" /> </UpdateParameters> </asp:ObjectDataSource>

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• asp.net web forms best practice to retrieve dynamic server control values

  - by Andrew Florko

  I populate web form with dynamic list of exams from database. I want user to enter examination marks for each exam. There is list of exam titles and textbox near each title. I create list with repeater control: <asp:Repeater ID="rptExams" runat="server" onitemdatabound="rptExams_ItemDataBound" > <ItemTemplate> <tr> <td> <asp:Literal runat="server" ID="ltTitle"/> </td> <td> <asp:HiddenField runat="server" ID="hfId"/> <asp:Textbox runat="server" ID="tbMark"/> </td> </tr> </ItemTemplate> </asp:Repeater> And bind data to repeater on page_init: class Exam { public int Id { get; set;} public string Title { get; set;} } ... // this list is retrieved from database actually Exam[] Exams = new Exam[] { new Exam { Id = 1, Title = "Math"}, new Exam { Id = 2, Title = "History"} }; ... protected void Page_Init(object sender, EventArgs e) { rptExams.DataSource = Exams; rptExams.DataBind(); } So far so good. Then I have to retrieve data on postback. I have two ways but both of them looks ugly. Idea is to store dynamically created databounded controls on ItemDataBoundEvent in Page_Init stage, and process their values in Page_Load stage. It looks like this: private Dictionary<HiddenField, TextBox> Id2Mark = new Dictionary<HiddenField, TextBox>(); protected void rptExams_ItemDataBound(object sender, RepeaterItemEventArgs e) { ... if (IsPostBack) { var tbMark = (TextBox)e.Item.FindControl("tbMark"); var hfId = (HiddenField)e.Item.FindControl("hfId"); // store dynamically created controls Id2Mark.Add(hfId, tbMark); } ... } protected void Page_Load(object sender, EventArgs e) { if (IsPostBack) { foreach (var pair in Id2Mark) { int examId = Int32.Parse(pair.Key.Value); string mark = pair.Value.Text; // PROCESS } ... I'm completely sure there is a better way to retrieve data from dynamically created controls. Thank you in advance!

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• Modify values on-the-fly during SqlAdapter.Fill( )

  - by Timothy

  What would the proper way be to modify values on the fly as they are loaded into a DataTable by SqlAdapter.Fill()? I have globalized my application's log messages. An integer indicating the event type and serialized data relevant to the event is stored in the database as show below. When I display the logged events through a DataGridView control to the user, I interpolate the data to a formatting string. event_type event_timestamp event_details ============================================ 3 2010-05-04 20:49:58 jsmith 1 2010-05-04 20:50:42 jsmith ... I am currently iterating through the DataTable's rows to format the messages. public class LogDataTable : DataTable { public LogDataTable() { Locale = CultureInfo.CurrentCulture; Columns.AddRange(new DataColumn[] { new DataColumn("event_type", typeof(Int32)), new DataColumn("event_timestamp", typeof(DateTime)), new DataColumn("event_details", typeof(String))}); } } ... using (SqlDataAdapter adapter = new SqlDataAdapter(...)) { adapter.SelectCommand.Parameters.AddRange(new Object[] { ... }); adapter.Fill(table); } foreach (DataRow row in table.Rows) { switch ((LogEventType)row["event_type"]) { case LogEventType.Create: row["event_details"] = String.Format(Resources.Strings.LogEventCreateMsg, row["event_details"]; break; case LogEventType.Create: row["event_details"] = String.Format(Resources.Strings.LogEventCreateMsg, row["event_details"]; break; ... The end result as displayed would resemble: Type Date and Time Details ==================================================================== [icon] 2010-05-04 20:49:58 Failed login attempt with username jsmith [icon] 2010-05-04 20:50:42 Successful login with username jsmith ... It seems wasteful to iterate the result set twice-- once as the table is filled by the adapter, and again to perform the replacements. I would really like to do the replacement on-the-fly in my LogDataTable class as it is being populated. I have tried overriding an OnRowChanging method in LogDataTable, which throws an InRowChangingEventException. protected override void OnRowChanging(DataRowChangeEventArgs e) { base.OnRowChanging(e); switch ((LogEventType)row["event_type"]) ... I have tried overriding an OnRowChanged method, which throws a StackOverflowException (I assume changing it re-triggers the method ad infinitum?). I have tried overriding an OnTableNewRow method, which does not throw an exception but appears not to be invoked (I assume only when a user adds a row in the view, which I've prevented). I'd greatly appreciate any assistance anyone can give me.

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• .NET datetime issue with SQL stored procedure

  - by DanO

  I am getting the below error when executing my application on a Windows XP machine with .NET 2.0 installed. On my computer Windows 7 .NET 2.0 - 3.5 I am not having any issues. The target SQL server version is 2005. This error started occurring when I added the datetime to the stored procedure. I have been reading alot about using .NET datetime with SQL datetime and I still have not figured this out. If someone can point me in the right direction I would appreciate it. Here is the where I believe the error is coming from. private static void InsertRecon(string computerName, int EncryptState, TimeSpan FindTime, Int64 EncryptSize, DateTime timeWritten) { SqlConnection DBC = new SqlConnection("server=server;UID=InventoryServer;Password=pass;database=Inventory;connection timeout=30"); SqlCommand CMD = new SqlCommand(); try { CMD.Connection = DBC; CMD.CommandType = CommandType.StoredProcedure; CMD.CommandText = "InsertReconData"; CMD.Parameters.Add("@CNAME", SqlDbType.NVarChar); CMD.Parameters.Add("@ENCRYPTEXIST", SqlDbType.Int); CMD.Parameters.Add("@RUNTIME", SqlDbType.Time); CMD.Parameters.Add("@ENCRYPTSIZE", SqlDbType.BigInt); CMD.Parameters.Add("@TIMEWRITTEN", SqlDbType.DateTime); CMD.Parameters["@CNAME"].Value = computerName; CMD.Parameters["@ENCRYPTEXIST"].Value = EncryptState; CMD.Parameters["@RUNTIME"].Value = FindTime; CMD.Parameters["@ENCRYPTSIZE"].Value = EncryptSize; CMD.Parameters["@TIMEWRITTEN"].Value = timeWritten; DBC.Open(); CMD.ExecuteNonQuery(); } catch (System.Data.SqlClient.SqlException e) { PostMessage(e.Message); } finally { DBC.Close(); CMD.Dispose(); DBC.Dispose(); } } Unhandled Exception: System.ArgumentOutOfRangeException: The SqlDbType enumeration value, 32, is invalid. Parameter name: SqlDbType at System.Data.SqlClient.MetaType.GetMetaTypeFromSqlDbType(SqlDbType target) at System.Data.SqlClient.SqlParameter.set_SqlDbType(SqlDbType value) at System.Data.SqlClient.SqlParameter..ctor(String parameterName, SqlDbType dbType) at System.Data.SqlClient.SqlParameterCollection.Add(String parameterName, SqlDbType sqlDbType) at ReconHelper.getFilesInfo.InsertRecon(String computerName, Int32 EncryptState, TimeSpan FindTime, Int64 EncryptSize, DateTime timeWritten) at ReconHelper.getFilesInfo.Main(String[] args)

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• building list of child objects inside main object

  - by Asdfg

  I have two tables like this: Category: Id Name ------------------ 1 Cat1 2 Cat2 Feature: Id Name CategoryId -------------------------------- 1 F1 1 2 F2 1 3 F3 2 4 F4 2 5 F5 2 In my .Net classes, i have two POCO classes like this: public class Category { public int Id {get;set;} public int Name {get;set;} public IList<Feature> Features {get;set;} } public class Feature { public int Id {get;set;} public int CategoryId {get;set;} public int Name {get;set;} } I am using a stored proc that returns me a result set by joining these 2 tables. This is how my Stored Proc returns the result set. SELECT c.CategoryId, c.Name Category, f.FeatureId, f.Name Feature FROM Category c INNER JOIN Feature f ON c.CategoryId = f.CategoryId ORDER BY c.Name --Resultset produced by the above query CategoryId CategoryName FeatureId FeatureName --------------------------------------------------- 1 Cat1 1 F1 1 Cat1 2 F2 2 Cat2 3 F3 2 Cat2 4 F4 2 Cat2 5 F5 Now if i want to build the list of categories in my .Net code, i have to loop thru the result set and add features unless the category changes. This is how my .Net code looks like that builds Categories and Features. List<Category> categories = new List<Category>(); Int32 lastCategoryId = 0; Category c = new Category(); using (SqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { //Check if the categoryid is same as previous one. //If Not, add new category. //If Yes, dont add the category. if (lastCategoryId != Convert.ToInt32(reader["CategoryId"])) { c = new Category { Id = Convert.ToInt32(reader["CategoryId"]), Name = reader["CategoryName"].ToString() }; c.Features = new List<Feature>(); categories.Add(c); } lastCategoryId = Convert.ToInt32(reader["CategoryId"]); //Add Feature c.Features.Add(new Feature { Name = reader["FeatureName"].ToString(), Id = Convert.ToInt32(reader["FeatureId"]) }); } return categories; } I was wondering if there is a better way to do build the list of Categories?

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