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  • DomainDataSource DataPager with silverlight 3 DataGrid & .Net RIA Services

    - by Dennis Ward
    I have a simple datagrid example with silverlight 3, and am populating it with the .NET ria services using a DomainDataSource along with a DataPager declaratively (nothing in the code-behind), and am experiencing this problem: The LoadSize is 30, and the Page size is 15, and when the page is loaded, the 1st and 2nd page appear correctly, but when I go beyond the 2nd page, nothing shows up in the grid. This used to work in the silverlight 3 beta with the Mix 2009 preview of .NET Ria services, and I've got a really simple example and have verified that the Service on the web project gets called to load a new batch, but the grid doesn't show any data. Can anyone shed any light as to why grid displays data only for the initial load of data and not subsequent batches from the pager? Here's my xaml: <riaControls:DomainDataSource x:Name="ArtistSource" QueryName="GetArtist" AutoLoad="True" LoadSize="30" PageSize="15"> <riaControls:DomainDataSource.DomainContext> <domain:AdminContext /> </riaControls:DomainDataSource.DomainContext> </riaControls:DomainDataSource> <data:DataGrid Grid.Row="1" x:Name="ArtistDataGrid" ItemsSource="{Binding Data, ElementName=ArtistSource}"> </data:DataGrid> <StackPanel Grid.Row="2"> <data:DataPager Source="{Binding Data, ElementName=ArtistSource}" /> </StackPanel>

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  • MVCContrib ActionFilter PassParametersDuringRedirect still passes reference type in querystring

    - by redsquare
    I am attempting to use the PRG pattern in an asp.net mvc 2 rc application. I found that the MVCContrib project has a custom action filter that will auto persist the parameters in TempData In an action I have the following return this.RedirectToAction(c => c.Requested(accountAnalysis)); however this is adding a querystring param to the request e.g http://mysite.com/account/add?model=MyProject.Models.AccountAnalysisViewModel Can anyone explain how I can use the PassParametersDuringRedirect filter attribute from MVCContrib to not pass the ViewModel type in the querystring. I see a patch was issued to fix this however in the latest MvcContrib that supports MVC 2 RC it is commented out as follows public static RedirectToRouteResult RedirectToAction<T>(this Controller controller, Expression<Action<T>> action) where T : Controller { /*var body = action.Body as MethodCallExpression; AddParameterValuesFromExpressionToTempData(controller, body); var routeValues = Microsoft.Web.Mvc.Internal.ExpressionHelper.GetRouteValuesFromExpression(action); RemoveReferenceTypesFromRouteValues(routeValues); return new RedirectToRouteResult(routeValues);*/ return new RedirectToRouteResult<T>(action); } Any help much appreciated. Thanks

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  • iTextSharp error - cannot convert type 'Collections.Generic.List' to 'iTextSharp.text.Element'

    - by mike
    I am trying to export pdf file using aspx and c#. I got the following error. Cannot implicitly convert type 'System.Collections.Generic.List'' to 'iTextSharp.text.Element' I have the following code using iTextSharp.text; using iTextSharp.text.pdf; using iTextSharp.text.html.simpleparser; StringBuilder strB = new StringBuilder(); document.Open(); if (text.Length.Equals(0))//export the text { GridView1.DataBind(); using (StringWriter sWriter = new StringWriter(strB)) { using (HtmlTextWriter htWriter = new HtmlTextWriter(sWriter)) { GridView1.RenderControl(htWriter); } } } else //export the grid { strB.Append(text); } using (TextReader sReader = new StringReader(strB.ToString())) { StyleSheet styles = new StyleSheet(); List<Element> list = new List<Element>(); list = HTMLWorker.ParseToList(sReader, styles); foreach (IElement elm in list) { document.Add(elm); } } I got the error in this line: list = HTMLWorker.ParseToList(sReader, styles); It's the first time that I am trying to export pdf files. I tried to cast the list element , however this did not solve my error. Any advice would be helpful!!!

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  • How to populate Java (web) application with initial data using Spring/JPA/Hibernate

    - by Tuukka Mustonen
    I want to setup my database with initial data programmatically. I want to populate my database for development runs, not for testing runs (it's easy). The product is built on top of Spring and JPA/Hibernate. Developer checks out the project Developer runs command/script to setup database with initial data Developer starts application (server) and begins developing/testing then: Developer runs command/script to flush the database and set it up with new initial data because database structures or the initial data bundle were changed What I want is to setup my environment by required parts in order to call my DAOs and insert new objects into database. I do not want to create initial data sets in raw SQL, XML, take dumps of database or whatever. I want to programmatically create objects and persist them in database as I would in normal application logic. One way to accomplish this would be to start up my application normally and run a special servlet that does the initialization. But is that really the way to go? I would love to execute the initial data setup as Maven task and I don't know how to do that if I take the servlet approach. There is somewhat similar question. I took a quick glance at the suggested DBUnit and Unitils. But they seem to be heavily focused in setting up testing environments, which is not what I want here. DBUnit does initial data population, but only using xml/csv fixtures, which is not what I'm after here. Then, Maven has SQL plugin, but I don't want to handle raw SQL. Maven also has Hibernate plugin, but it seems to help only in Hibernate configuration and table schema creation (not in populating db with data). How to do this?

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  • "Parameter type conflict" when calling Java Stored Procedure within another Java Stored Procedure

    - by GuiPereira
    Here's the problem (sorry for the bad english): i'm working with JDeveloper and Oracle10g, and i have a Java Stored Procedure that is calling another JSP like the code: int sd = 0; try { CallableStatement clstAddRel = conn.prepareCall(" {call FC_RJS_INCLUIR_RELACAO_PRODCAT(?,?)} "); clstAddRel.registerOutParameter(1, Types.INTEGER); clstAddRel.setString(1, Integer.toString(id_produto_interno)); clstAddRel.setString(2, ac[i].toString()); clstAddRel.execute(); sd = clstAddRel.getInt(1); } catch(SQLException e) { String sqlTeste3 = "insert into ateste values (SQ_ATESTE.nextval, ?)"; PreparedStatement pstTeste3 = conn.prepareStatement(sqlTeste3); pstTeste3.setString(1,"erro: "+e.getMessage()+ ac[i]); pstTeste3.execute(); pstTeste3.close(); } I'm recording the error in a table called ATESTE because this JavaSP is a procedure and not a function, I've to manipulate DML inside. So, the error message I'm getting is: 'parameter type conflict'... the function "FC_RJS_INCLUIR_RELACAO_PRODCAT" it's a Java Stored Procedure too, it's already exported to Oracle, and returns an int variable, and i have to read this to decide which webservice i will call from this JavaSP. I have already tried the OracleTyep.NUMBER in the registerOutParameter. Anyone knows what i'm doing wrong?

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  • R and version control for the solo data analyst

    - by Jeromy Anglim
    Many data analysts that I respect use version control. For example: http://github.com/hadley/ See comments on http://permut.wordpress.com/2010/04/21/revision-control-statistics-bleg/ However, I'm evaluating whether adopting a version control system such as git would be worthwhile. A brief overview: I'm a social scientist who uses R to analyse data for research publications. I don't currently produce R packages. My R code for a project typically includes a few thousand lines of code for data input, cleaning, manipulation, analyses, and output generation. Publications are typically written using LaTeX. With regards to version control there are many benefits which I have read about, yet they seem to be less relevant to the solo data analyst. Backup: I have a backup system already in place. Forking and rewinding: I've never felt the need to do this, but I can see how it could be useful (e.g., you are preparing multiple journal articles based on the same dataset; you are preparing a report that is updated monthly, etc) Collaboration: Most of the time I am analysing data myself, thus, I woudln't get the collaboration benefits of version control. There are also several potential costs involved with adopting version control: Time to evaluate and learn a version control system A possible increase in complexity over my current file management system However, I still have the feeling that I'm missing something. General guides on version control seem to be addressed more towards computer scientists than data analysts. Thus, specifically in relation to data analysts in circumstances similar to those listed above: Is version control worth the effort? What are the main pros and cons of adopting version control? What is a good strategy for getting started with version control for data analysis with R (e.g., examples, workflow ideas, software, links to guides)?

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  • VB .NET DirectCast and Type Reflection

    - by msarchet
    The application that I am working on has a generic Parent Form called RSChild, that is used to perform some operations depending on whether or not the control that is contained within it is in a MdiTabManager or inside of its own modal form. Then the actual User Controls contained within Inherit from a Interface Called ObjectEdit (Objects that we allow to be edited). At a point in my code I am doing this. Public Function doesTabExist(ByVal id As Integer, ByVal recordType As Enums.eRecordType) As Boolean Dim alikePages As Object = (From tabs In DirectCast(Control.FromHandle(MainForm.SharedHandle), MainForm).XtraTabbedMdiManager1.Pages Where DirectCast(tabs.MdiChild, RSChild).RSObject.RecordType = recordType Select tabs) For Each page As DevExpress.XtraTabbedMdi.XtraMdiTabPage In alikePages Select Case recordType Case Enums.eRecordType.Doctor If id = DirectCast(castTabPageToRSChild(page).RSObject, UI.Doctor).ID Then pageToActive(page) Return True End If 'rest of the cases so the case block is repeated 10 times' End Function And my castTabPageToRSChild(page) is a lambda function as Such Dim castTabPageToRSChild As Func(Of DevExpress.XtraTabbedMdi.XtraMdiTabPage, RSChild) = Function(page) DirectCast(page.MdiChild, RSChild) So my Question is, I have about 10 case statements, all because I can't seem to find a way to use reflection to get the underlying Type of the RSObject Object. So I have the whole If block repeated over and over. I tried doing castTabPageToRSChild(page)RSObject.GetType and using that in the DirectCast and I also tried creating another object that was separate from that and doing the same thing. My code works as intended I'm just trying to see if there is a manner in which I didn't have a lot of replicated code. My vision would be to do something like For Each page As XtraMdiTabPage In alikePages If id = DirectCast(castTabPageToRSchild(page).RSObject, TypeOfThatObject).Id Then Return True Next However I have a feeling this is not possible due to the behavior of DirectCast.

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  • Could not load type from assembly error

    - by George Mauer
    I have written the following simple test in trying to learn Castle Windsor's Fluent Interface: using NUnit.Framework; using Castle.Windsor; using System.Collections; using Castle.MicroKernel.Registration; namespace WindsorSample { public class MyComponent : IMyComponent { public MyComponent(int start_at) { this.Value = start_at; } public int Value { get; private set; } } public interface IMyComponent { int Value { get; } } [TestFixture] public class ConcreteImplFixture { [Test] public void ResolvingConcreteImplShouldInitialiseValue() { IWindsorContainer container = new WindsorContainer(); container.Register(Component.For<IMyComponent>().ImplementedBy<MyComponent>().Parameters(Parameter.ForKey("start_at").Eq("1"))); IMyComponent resolvedComp = container.Resolve<IMyComponent>(); Assert.AreEqual(resolvedComp.Value, 1); } } } When I execute the test through TestDriven.NET I get the following error: System.TypeLoadException : Could not load type 'Castle.MicroKernel.Registration.IRegistration' from assembly 'Castle.MicroKernel, Version=1.0.3.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc'. at WindsorSample.ConcreteImplFixture.ResolvingConcreteImplShouldInitialiseValue() When I execute the test through the NUnit GUI I get: WindsorSample.ConcreteImplFixture.ResolvingConcreteImplShouldInitialiseValue: System.IO.FileNotFoundException : Could not load file or assembly 'Castle.Windsor, Version=1.0.3.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc' or one of its dependencies. The system cannot find the file specified. If I open the Assembly that I am referencing in Reflector I can see its information is: Castle.MicroKernel, Version=1.0.3.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc and that it definitely contains Castle.MicroKernel.Registration.IRegistration What could be going on? I should mention that the binaries are taken from the latest build of Castle though I have never worked with nant so I didn't bother re-compiling from source and just took the files in the bin directory. I should also point out that my project compiles with no problem.

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  • " not all code paths return a value" when return enum type

    - by netmajor
    I have enum list and method and i get error: " not all code paths return a value" Some idea whats wrong in my method ? I am sure I always return STANY type :/ Thanks for help :) private enum STANY { PATROL, CHAT, EAT, SEARCH, DIE }; private STANY giveState(int id, List<Ludek> gracze, List<int> plansza) { // Sprawdz czy gracz stoi na polu z jedzeniem i nie ma 2000 jednostek jedzenia bool onTheFood = false; onTheFood = CzyPoleZjedzeniem(id, gracze, plansza, onTheFood); if (onTheFood && (gracze[id].IloscJedzenia < startFood / 2)) return STANY.EAT; // Sprawdz czy gracz nie stoi na polu z innym graczem bool allKnowledge = true; allKnowledge = CzyPoleZInnymGraczem(id, gracze, allKnowledge); if (!allKnowledge) return STANY.CHAT; // Jesli ma ponad i rowna ilosc jedzenia patroluj if (gracze[id].IloscJedzenia >= startFood / 2) return STANY.PATROL; // Jesli ma mniej niz polowe jedzenia szukaj jedzenia if (gracze[id].IloscJedzenia > 0 && gracze[id].IloscJedzenia < startFood / 2) return STANY.SEARCH; // Jesli nie ma jedzenia umieraj if (gracze[id].IloscJedzenia <= 0) return STANY.DIE; }

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  • LINQ-to-SQL: Could not find key member 'x' of key 'x' on type 'y'

    - by Austin Hyde
    I am trying to connect my application to a SQLite database with LINQ-to-SQL, and so far everything has worked fine. The only hitch was that the SQLite provider I am using does not support code generation (unless I was doing something wrong), so I manually coded the 4 tables in the DB. The solution builds properly, but will not run, giving me the error message Could not find key member 'ItemType_Id' of key 'ItemType_Id' on type 'Item'. The key may be wrong or the field or property on 'Item' has changed names. I have checked and double checked spellings and field names on the database and in the attribute mappings, but could not find any problems. The SQL for the table looks like this: CREATE TABLE [Items] ( [Id] integer PRIMARY KEY AUTOINCREMENT NOT NULL, [Name] text NOT NULL, [ItemType_Id] integer NOT NULL ); And my mapping code: [Table(Name="Items")] class Item { // [snip] [Column(Name = "Id", IsPrimaryKey=true, IsDbGenerated=true)] public int Id { get; set; } // [snip] [Column(Name="ItemType_Id")] public int ItemTypeId { get; set; } [Association(Storage = "_itemType", ThisKey = "ItemType_Id")] public ItemType ItemType { get { return _itemType.Entity; } set { _itemType.Entity = value; } } private EntityRef<ItemType> _itemType; // [snip] } This is really my first excursion into LINQ-to-SQL, and am learning as I go, but I cannot seem to get past this seeming simple problem. Why cannot LINQ see my association?

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  • UITouch Event Propagation To Background UIViews

    - by drewww
    I'm having troubles getting any UIView that's not the foreground UIView to receive UITouch events. I'm building an all-Core Graphics-app, so I'm not using any built in UIViews or IB or anything - everything is programmatically constructed and drawn into. Here's my view hierarchy: Root View Type A Container Type A View Type A View Type A View Type B Container Type B View Type B View Type B View The containers are just vanilla UIView objects that I create programmatically and add instances of Type A and B to when they're created. I did this originally to make hitTesting easier—Type A objects can be drag-and-dropped onto Type B objects. Type A objects receive touch events fine, but Type B objects (which are contained by Type B Container which is behind Type A Container) don't receive touch events. Both containers occupy the entire screen; they're basically just convenience containers. If I pull Type B Container to the front (eg [self.view bringSubviewToFront:Type B Container]) it receives events properly, but then the Type A Container doesn't get events. How do I propagate events from the view that's on top? Both views occupy the entire screen, so it makes sense that the top-most view is catching the events, but how should I get it to pass those events on to Type B Container? I could inject some code in the container that passes the touch events back to the main ViewController which can pass them on to Type B Container but that feels really messy to me. Is there a nicer way to not have the Type A Container stop propagation? What's the best practice here?

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  • error C2109: subscript requires array or pointer type

    - by numerical25
    I am trying to debug some homework but I am having trouble with these lines of code #include "stdafx.h" #include<conio.h> #include<iostream> #include<string> using namespace std; int main() { char word; cout << "Enter a word and I will tell you whether it is" << endl << "in the first or last half of the alphabet." << endl << "Please begin the word with a lowercase letter. --> "; cin >> word; if(word[0] >= 'm') cout << word << " is in the first half of the alphabet" << endl; else cout << word << " is in the last half of the alphabet" << endl; return 0; } I get the following error and I have no clue what its sayings error C2109: subscript requires array or pointer type

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  • Request for the permission of type 'System.Web.AspNetHostingPermission' failed when compiling web si

    - by ahsteele
    I have been using Windows 7 for a while but have not had to work with a particular legacy intranet application since my upgrade. Unfortunately, this application is setup as an ASP.NET Website project hosted on a remote server. When I have the website open in Visual Studio 2008 and try to debug it I get the following compiler error: Request for the permission of type 'System.Web.AspNetHostingPermission' failed To resolve this issue on Windows Vista machines, I would change the machine's .NET Security Configuration trust level to full for the local intranet (fix outlined here). I believe this configuration utility relied upon the mscorcfg.msc which from some cursory research appears to be apart of the .NET 2.0 SDK. I have tried to follow the instructions from this Microsoft Support article running the command below to no avail. Drive:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\caspol.exe -m -ag 1 -url "file:////\\computername\sharename\*" FullTrust -exclusive on Presently, I have the following .NET and ASP.NET components installed on my machine Microsoft .NET Compact Framework 2.0 SP2 Microsoft .NET Compact Framework 3.5 Microsoft .NET Framework 4 Client Profile Microsoft .NET Framework 4 Extended Microsoft .NET Framework 4 Multi-Targeting Pack Microsoft ASP.NET MVC 1.0 Microsoft ASP.NET MVC 2 Microsoft ASP.NET MVC 2 - Visual Studio 2008 Tools Microsoft ASP.NET MVC 2 - Visual Studio 2010 Tools Do I need to install the .NET 2.0 SDK? Am I issuing the caspol command incorrectly? Is there something else that I am missing?

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  • XML to Type - Quick way?

    - by MRFerocius
    Team; How are you doing? Im breaking my head trying to do this that seems simple but I can't figure it out... Suppose I have this XML as a string: <calles> <calle> <nombre>CALLAO AV.</nombre> <altura>1500</altura> <longitud>-58.3918617027</longitud> <latitud>-34.5916734896</latitud> <barrio>Recoleta</barrio> </calle> </calles> And and have this Type I created to map that XML: public class Ubicacion { public string Latitud { get; set; } public string Longitud { get; set; } public string Nombre { get; set; } public string Altura { get; set; } public string Barrio { get; set; } public Ubicacion() { } } I need to take that XML file and create an object with those values... Does somebody know a quick way to do it? with C#? I have been trying this but is not working at all... XElement dir = XElement.Parse(text); Ubicacion informacion = from d in dir.Elements("calle"). select new Ubicacion { Longitud = d.Element("longitud").Value, Latitud = d.Element("latitud").Value, Altura = d.Element("altura").Value, Nombre = d.Element("nombre").Value, Barrio = d.Element("barrio").Value, }; return informacion.Cast<Ubicacion>(); } Any ideas? Thanks!!!

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  • Double type returns -1.#IND/NaN error when calculating pi iteratively

    - by Draak
    I am working through a problem for my MCTS certification. The program has to calculate pi until the user presses a key, at which point the thread is aborted, the result returned to the main thread and printed in the console. Simple enough, right? This exercise is really meant to be about threading, but I'm running into another problem. The procedure that calculates pi returns -1.#IND. I've read some of the material on the web about this error, but I'm still not sure how to fix it. When I change double to Decimal type, I unsurprisingly get Overflow Exception very quickly. So, the question is how do I store the numbers correctly? Do I have to create a class to somehow store parts of the number when it gets too big to be contained in a Decimal? Class PiCalculator Dim a As Double = 1 Dim b As Double = 1 / Math.Sqrt(2) Dim t As Double = 1 / 4 Dim p As Double = 1 Dim pi As Double Dim callback As DelegateResult Sub New(ByVal _callback As DelegateResult) callback = _callback End Sub Sub Calculate() Try Do While True Dim a1 = (a + b) / 2 Dim b1 = Math.Sqrt(a * b) Dim t1 = t - p * (a - a1) ^ 2 Dim p1 = 2 * p a = a1 b = b1 t = t1 p = p1 pi = ((a + b) ^ 2) / (4 * t) Loop Catch ex As ThreadAbortException Finally callback(pi) End Try End Sub End Class

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  • XML Schema Migration

    - by Corwin Joy
    I am working on a project where we need to save data in an XML format. The problem is, over time we expect the format / schema for our data to change. What we want to be able to do is to produce scripts to migrate our data across different schema versions. We distribute our product to thousands of customers so we need to be able to run / apply these scripts at customer sites (so we can't just do the conversions by hand). I think that what we are looking for is some kind of XML data migration tool. In my mind the ideal tool could: Do an "XML diff" of two schema to identify added/deleted/changed nodes. Allow us to specify transformation functions. So, for example, we might add a new element to our schema that is a function of the old elements. (E.g. a new element C where C = A+B, A + B are old elements). So I think I am looking for a kind of XML diff and patch tool which can also apply transformation functions. One tool I am looking at for this is Altova's MapForce . I'm sure others here have had to deal with XML data format migration. How did you handle it? Edit: One point of clarification. The "diff" I plan to do is on the schema or .xsd files. The actual changes will be made to particular data sets that follow a given schema. These data sets will be .xml files. So its a "diff" of the schema to help figure out what changes need to be made to data sets to migrate them from one scheme to another.

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  • 'System.Web.UI.Control.Controls' is a 'property' but is used like a 'type'

    - by senzacionale
    What i am doing wrong? I extend LinkButton and i get this error Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0118: 'System.Web.UI.Control.Controls' is a 'property' but is used like a 'type' Source Error: Line 1084: Line 1085: public void @_DataBinding_control30(object sender, System.EventArgs e) { Line 1086: ConfirmButton.Controls.ConfirmLinkButton dataBindingExpressionBuilderTarget; Line 1087: System.Web.UI.IDataItemContainer Container; Line 1088: dataBindingExpressionBuilderTarget = ((ConfirmButton.Controls.ConfirmLinkButton)(sender)); This is C# code: [Localizable(true)] public string Message { get { return ViewState["Message"] as string; } set { ViewState["Message"] = value; } } #region Overriden protected override void OnPreRender(EventArgs e) { if (!String.IsNullOrEmpty(Message)) { WebControlUtils.SetConfirmationMessage(Page, typeof (Page), this, Message, Page.IsAsyncPostBack(), CausesValidation); } base.OnPreRender(e); } #endregion ASPX CODE: <asp:TemplateField> <ItemTemplate> <asp:ConfirmLinkButton ID="lnkBtnDelete" runat="server" Text="Odstrani" Message="Delete?" CommandName="DeleteAgencie" Width="50" CommandArgument='<%# Eval("idAgencies") %>' OnCommand="lnkBtnDelete_Command" CausesValidation="False"></asp:ConfirmLinkButton> </ItemTemplate> </asp:TemplateField> Regards

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  • Java JUnit: The method X is ambiguous for type Y

    - by Rosarch
    I had some tests working fine. Then, I moved it to a different package, and am now getting errors. Here is the code: import static org.junit.Assert.*; import java.util.HashSet; import java.util.Map; import java.util.Set; import org.jgrapht.Graphs; import org.jgrapht.WeightedGraph; import org.jgrapht.graph.DefaultWeightedEdge; import org.jgrapht.graph.SimpleWeightedGraph; import org.junit.*; @Test public void testEccentricity() { WeightedGraph<String, DefaultWeightedEdge> g = generateSimpleCaseGraph(); Map<String, Double> eccen = JGraphtUtilities.eccentricities(g); assertEquals(70, eccen.get("alpha")); assertEquals(80, eccen.get("l")); assertEquals(130, eccen.get("l-0")); assertEquals(100, eccen.get("l-1")); assertEquals(90, eccen.get("r")); assertEquals(120, eccen.get("r-0")); assertEquals(130, eccen.get("r-1")); } The error message is this: The method assertEquals(Object, Object) is ambiguous for the type JGraphtUtilitiesTest How can I fix this? Why did this problem occur as I moved the class to a different package?

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  • The ViewData item that has the key 'MY KEY' is of type 'System.String' but must be of type 'IEnumerable<SelectListItem>'.

    - by JBibbs
    I am trying to populate a dropdown list from a database mapped with Linq 2 SQL, using ASP.NET MVC 2, and keep getting this error. I am so confused because I am declaring a variable with the type IEnumerable<SelectListItem> on the second line, but the error makes me think this is not the case. I feel like this should be very simple, but I am struggling. Any help is appreciated. Here are the interesting bits of my controller: public ActionResult Create() { var db = new DB(); IEnumerable<SelectListItem> basetypes = db.Basetypes.Select(b => new SelectListItem { Value = b.basetype, Text = b.basetype }); ViewData["basetype"] = basetypes; return View(); } And here are the interesting bits of my view: <div class="editor-label"> <%: Html.LabelFor(model => model.basetype) %> </div> <div class="editor-field"> <%: Html.DropDownList("basetype") %> <%: Html.ValidationMessageFor(model => model.basetype) %> </div> Here is the Post action when submitting the Form // POST: /Meals/Create [HttpPost] public ActionResult Create(Meal meal) { if (ModelState.IsValid) { try { // TODO: Add insert logic here var db = new DB(); db.Meals.InsertOnSubmit(meal); db.SubmitChanges(); return RedirectToAction("Index"); } catch { return View(meal); } } else { return View(meal); } } Thanks.

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  • Error C2451: Illegal conditional expression of type 'UnaryOp<E1, Op>' in ostream - visual studio 9

    - by Steven Hill
    I am getting a repeated error with VS 9. The code compiles under GNU C++, but I want debug with the VS IDE. Any idea what could be causing this error. Error 13 error C2451: conditional expression of type 'UnaryOp' is illegal \Microsoft Visual Studio 9.0\VC\include\ostream 512 //unary constraint template class UnaryOp : public Constraint { public: const E1& e1; UnaryOp(const E1& _e1); bool Satisfiable() const; Bool SatisfiableAux() const; void Print (std::ostream& os) const; UnaryOp* clone () const; //operator bool () const { return true; } }; template std::ostream& operator<<(std::ostream& os, const UnaryOp& unop); UnaryOp code that uses ostream: template INLINE void UnaryOp::Print (std::ostream& os) const { os << *this; } template INLINE std::ostream& operator<<(std::ostream& os, const UnaryOp& unop) { return os << Op::name << unop.e1; } ostream line with error: _Myt& __CLR_OR_THIS_CALL put(_Elem _Ch) { // insert a character ios_base::iostate _State = ios_base::goodbit; const sentry _Ok(*this); 512 if (!_Ok) _State |= ios_base::badbit; else { // state okay, insert character _TRY_IO_BEGIN

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  • Programmatically access the CIL for a .NET type

    - by Jordão
    Is there a straighforward library that I can use to access the CIL for a .NET type? Let me demonstrate what I want the fictitious CilExtractor to do: [Serializable] public class Type_For_Extract_Cil_Test { private int _field = 3; public int Method(int value) { checked { return _field + value; } } } [Test] public void Extract_Cil_For_Type_Test() { string actualCil = CilExtractor.ExtractCil(typeof(Type_For_Extract_Cil_Test)); string expectedCil = @" .class public auto ansi serializable beforefieldinit Type_For_Extract_Cil_Test extends [mscorlib]System.Object { .method public hidebysig specialname rtspecialname instance void .ctor() cil managed { .maxstack 8 L_0000: ldarg.0 L_0001: ldc.i4.3 L_0002: stfld int32 Type_For_Extract_Cil_Test::_field L_0007: ldarg.0 L_0008: call instance void [mscorlib]System.Object::.ctor() L_000d: ret } .method public hidebysig instance int32 Method(int32 'value') cil managed { .maxstack 8 L_0000: ldarg.0 L_0001: ldfld int32 Type_For_Extract_Cil_Test::_field L_0006: ldarg.1 L_0007: add.ovf L_0008: ret } .field private int32 _field }"; // indentations and code formatting issues apart, this should succeed Assert.AreEqual(expectedCil, actualCil); } I know I can do this with Mono.Cecil or Reflector, but I also know I have to write a lot of code to achieve this. Since Reflector already does this on its UI, isn't there a simple way to access this functionality, like with a simple method call? Are there other libraries that are better suited to this specific scenario?

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  • What does SQL Server's BACKUPIO wait type mean?

    - by solublefish
    I'm using Sql Server 2008 ("R1"), with some maintenance plans that back up my databases to a network share. Some of my backup jobs show long waits of type "BACKUPIO". Of course it seems like this is an I/O subsystem limitation, but I'm skeptical. Perfmon stats for I/O on the production (source) server are well within normal trends for that server. The destination server shows a sustained 7MB/s write rate, which seems incredibly low, even for a slow disk. The network link is gigabit ethernet and nowhere near saturated. The few docs I've turned up about BACKUPIO indicate that it's not specifically a wait on I/O, surprisingly enough. This MSFT doc says it's abnormal unless you're using a tape drive, which I'm not. But it doesn't say (or I don't understand) exactly what resource is missing. http://www.docstoc.com/docs/24580659/Performance-Tuning-in-SQL-Server-2005 And this piece says it's not related to I/O performance at all. http://www.informit.com/articles/article.aspx?p=686168&seqNum=5 "Note that BACKUPIO and IO_AUDIT_MUTEX are not related to IO performance." Anyway, does anyone know what BACKUPIO actually means and/or what I can do to diagnose or eliminate it?

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  • Javassist failure in hibernate: invalid constant type: 60

    - by Kaleb Pederson
    I'm creating a cli tool to manage an existing application. Both the application and the tests build fine and run fine but despite that I receive a javassist failure when running my cli tool that exists within the jar: INFO: Bytecode provider name : javassist ... INFO: Hibernate EntityManager 3.5.1-Final Exception in thread "main" javax.persistence.PersistenceException: Unable to configure EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:371) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32) ... at com.sophware.flexipol.admin.AdminTool.<init>(AdminTool.java:40) at com.sophware.flexipol.admin.AdminTool.main(AdminTool.java:69) Caused by: java.lang.RuntimeException: Error while reading file:flexipol-jar-with-dependencies.jar at org.hibernate.ejb.packaging.NativeScanner.getClassesInJar(NativeScanner.java:131) at org.hibernate.ejb.Ejb3Configuration.addScannedEntries(Ejb3Configuration.java:467) at org.hibernate.ejb.Ejb3Configuration.addMetadataFromScan(Ejb3Configuration.java:457) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:347) ... 11 more Caused by: java.io.IOException: invalid constant type: 60 at javassist.bytecode.ConstPool.readOne(ConstPool.java:1027) at javassist.bytecode.ConstPool.read(ConstPool.java:970) at javassist.bytecode.ConstPool.<init>(ConstPool.java:127) at javassist.bytecode.ClassFile.read(ClassFile.java:693) at javassist.bytecode.ClassFile.<init>(ClassFile.java:85) at org.hibernate.ejb.packaging.AbstractJarVisitor.checkAnnotationMatching(AbstractJarVisitor.java:243) at org.hibernate.ejb.packaging.AbstractJarVisitor.executeJavaElementFilter(AbstractJarVisitor.java:209) at org.hibernate.ejb.packaging.AbstractJarVisitor.addElement(AbstractJarVisitor.java:170) at org.hibernate.ejb.packaging.FileZippedJarVisitor.doProcessElements(FileZippedJarVisitor.java:119) at org.hibernate.ejb.packaging.AbstractJarVisitor.getMatchingEntries(AbstractJarVisitor.java:146) at org.hibernate.ejb.packaging.NativeScanner.getClassesInJar(NativeScanner.java:128) ... 14 more Since I know the jar is fine as the unit and integration tests run against it, I thought it might be a problem with javassist, so I tried cglib. The bytecode provider then shows as cglib but I still get the exact same stack trace with javassist present in it. cglib is definitely in the classpath: $ unzip -l flexipol-jar-with-dependencies.jar | grep cglib | wc -l 383 I've tried with both hibernate 3.4 and 3.5 and get the exact same error. Is this a problem with javassist?

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  • Casting generics and the generic type

    - by Kragen
    Consider, I have the following 3 classes / interfaces: class MyClass<T> { } interface IMyInterface { } class Derived : IMyInterface { } And I want to be able to cast a MyClass<Derived> into a MyClass<IMyInterface> or visa-versa: MyClass<Derived> a = new MyClass<Derived>(); MyClass<IMyInterface> b = (MyClass<IMyInterface>)a; But I get compiler errors if I try: Cannot convert type 'MyClass<Derived>' to 'MyClass<IMyInterface>' I'm sure there is a very good reason why I cant do this, but I can't think of one. As for why I want to do this - The scenario I'm imagining is one whereby you ideally want to work with an instance of MyClass<Derived> in order to avoid lots of nasty casts, however you need to pass your instance to an interface that accepts MyClass<IMyInterface>. So my question is twofold: Why can I not cast between these two types? Is there any way of keeping the niceness of working with an instance of MyClass<Derived> while still being able to cast this into a MyClass<IMyInterface>?

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  • MVC Form and Dictionary Type

    - by Brian Schmitt
    I am attempting to use a property on my model that is of type Dictionary<string, string>. This dictionary is one of several other properties on the model, and I am using the dictionary as a key/value store to produce a 'dynamic' form. E.G.: User Name Settings A B I want to be able to submit and save any changes to settings A and B. I can submit the form and get my posted values in all my other fields, however the dictionary gets set to null. <%=Html.LabelFor(m => m.Name)%> <%=Html.DisplayFor(m => m.Name)%> <%=Html.LabelFor(m => m.Settings["A"])%> <%=Html.TextBoxFor(m => m.Settings["A"])%> <%=Html.LabelFor(m => m.Settings["B"])%> <%=Html.TextBoxFor(m => m.Settings["B"])%> Is there a better way to produce the dynamic form with a key/value pair? The actual code will be using partials (there several hundred variations), and the above is only a contrived example.

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