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  • Getting a certain node using DataSet

    - by MarceloRamires
    I have the following XML <xml> <ObsCont xCampo="field1"> <xTexto>example1</xTexto> </ObsCont> <ObsCont xCampo="field2"> <xTexto>example2</xTexto> </ObsCont> <ObsCont xCampo="field3"> <xTexto>example3</xTexto> </ObsCont> <field>information</field> </xml> Is there a way to get the content of "xTexto" inside the ObsCont that has "field2" value for the attribute xCampo using DataSet ? It would be desireable to have a single liner like the following: DataSet ds = new DataSet(); ds.ReadXml(StrArquivoProc); ds.Tables["xml"].Rows[0]["field"].ToString(); //field == "information" If I use the same method I'm not specifying that I want the one with the desired attribute.

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  • how to insert an integer value from a Grid to Sql table?

    - by z-chaos
    Hi, I have a AdvWebGrid where the 7th coloumn is DynEdit where user will enter the value.Now I have to take the enetered value and insert into the Sql tablel. For example i have 7 records in the grid the user will enter some comments for the first three record and save.Now i have to insert/update the first three comments in the table.

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  • Configuration Element Collection Section

    - by Matt
    I would like to set up a custom app configuration element collection section like this <logSectionGroup> <logSection name="Testttt"> <properties name ="Pride"> <pathName="TestingLog.txt"/> <deleteRetention="100"/> <deleteZeroRetention="5"/> <wildcard="*.txt"/> </properties> <properties name ="Adhoc"> <pathName="blah.txt"/> <deleteRetention="70"/> <deleteZeroRetention="3"/> <wildcard="*.*"/> </properties> </logSection> </logSectionGroup> Is this possible? Properties would be the configuration element, and log section would be the configuration element collection. The problem is, I've only seen where you can have multiple instances of a single element instead of multiple elements. <Section name="Section1"> <Section name="Section1"> <SubSection name="SubSection1"> <Item name="Item1" /> <Item name="Item2" /> </SubSection> <SubSection name="SubSection2"> <Item name="Item1" /> <Item name="Item2" /> </SubSection> </Section> When you use GetElementKey() you have it return element "name" in the above example but how would you return 4 different elements like "pathName" "deleteRetention" etc. Here is my Definition for PropElement Public Class PropElement Inherits ConfigurationElement <ConfigurationProperty("pathName", IsRequired:=True)> _ Public Property PathName() As String Get Return CStr(Me("pathName")) End Get Set(ByVal value As String) Me("pathName") = value End Set End Property <ConfigurationProperty("deleteRetention", DefaultValue:="0", IsRequired:=False)> _ Public Property DeleteRetention() As Integer Get Return CStr(Me("deleteRetention")) End Get Set(ByVal value As Integer) Me("deleteRetention") = value End Set End Property <ConfigurationProperty("deleteZeroRetention", DefaultValue:="0", IsRequired:=False)> _ Public Property DeleteZeroRetention() As Integer Get Return CStr(Me("deleteZeroRetention")) End Get Set(ByVal value As Integer) Me("deleteZeroRetention") = value End Set End Property <ConfigurationProperty("wildcard", DefaultValue:="*.*", IsRequired:=False)> _ Public Property Wildcard() As String Get Return CStr(Me("wildcard")) End Get Set(ByVal value As String) Me("wildcard") = value End Set End Property End Class

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  • WPF: How to programmatically utilize the ErrorTemplate of an Control?

    - by geeraija
    Hi, is there a way to programmatically set and remove the ErrorTemplate of an Control without the whole Validation mechanism? Basically, what I'd like to do, is to retrieve the ErrorTemplate of an Control at some point like this: ControlTemplate errTemplate = Validation.GetErrorTemplate(myTxtBx); and temporarily use it as it's ControlTemplate like this: myTxtBx.Template = errTemplate; Can you somehow do this?

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  • how to invisible a column in gridview

    - by Joby Kurian
    how to invisible a column in gridview.I tried to use this---dataGridView.Columns(0).Visible = False.But its getting an error "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index".How to do that?

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  • How can I get an IObservable<T> in Rx from a "non-standard" event?

    - by Dan Tao
    Here's what I mean. Suppose I'm working with an API that exposes events, but these events do not follow the standard EventHandler or EventHandler<TEventArgs> signature. One event might look like this, for instance: Public Event Update(ByVal sender As BaseSubscription, ByVal e As BaseEvent) Now, typically, if I want to get an IObservable<TEventArgs> from an event, I can just do this: Dim updates = Observable.FromEvent(Of UpdateEventArgs)( _ target:=updateSource, _ eventName:="Update" _ ) But this doesn't work, because the Update event is not an EventHandler<UpdateEventArgs> -- in fact, there is no UpdateEventArgs -- it's basically just its own thing. Obviously, I could define my own class deriving from EventArgs (i.e., UpdateEventArgs), write another class to wrap the object providing the Update event, give the wrapper class its own Update event that is an EventHandler<UpdateEventArgs>, and get an IObservable<UpdateEventArgs> from that. But that's an annoying amount of work. Is there some way to create an IObservable<[something]> from a "non-standard" event like this, or am I out of luck?

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  • Dynamically create textbox

    - by comii
    I need to dynamically create textbox. This is my code, but with this I create only one textbox: Public Sub CreateTextBox() Dim I As Integer Dim niz As Array For I = 1 To 5 Dim myTextBox = New TextBox myTextBox.Text = "Control Number:" & I Me.Controls.Add(myTextBox) Next End Sub So how i can dynamically create textbox? Thanks!

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  • Versioning issues with assemblies

    - by devoured elysium
    Let's assume I have two assemblies: MyExecutable.dll version 1.0.0 MyClassLibrary.dll version 1.0.0 Now, MyExecutable.dll currently uses MyClassLibrary.dll's classes and methods (which include some algorithms). Most of those algorithms were made on the run, being that later I'll want to refine them if needed. This means, I won't change the interface of those classes but the code itself will see some changes. The question at hand is, MyExecutable.dll will be expecting MyClassLibrary.dll 1.0.0 and I'll want it to use version 1.0.1 (or something like that). I don't want to have to recompile MyExecutable.dll(because actually there might be more than just one executable using MyClassLibrary.dll). Is there a solution for this problem? I've heard about the GAC, but if possible I'd like to stay away from it. Thanks

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  • Why would an error get thrown inside my try-catch?

    - by George Johnston
    Why would my try-catch block still be throwing an error when it's handled? Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Try Here >> : _MemoryStream.Seek(6 * StartOffset, 0) _MemoryStream.Read(_Buffer, 0, 6) Catch ex As IOException // Handle Error End Try Edit: Cleaned the question up to remove the extraneous information.

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  • Use LINQ to count the number of combinations existing in two lists

    - by Ben McCormack
    I'm trying to create a LINQ query (or queries) that count the total number of occurences of a combinations of items in one list that exist in a different list. For example, take the following lists: CartItems DiscountItems ========= ============= AAA AAA AAA BBB AAA BBB BBB CCC CCC DDD The result of the query operation should be 2 since I can find two combinations of AAA and BBB (from DiscountItems) within the contents of CartItems. My thinking in approaching the query is to join the lists together to shorten CartItems to only include items from DiscountItems. The solution would be to find the CartItem in the resulting query that occurs the least amount of times, thus indicating how many combinations of items exist in CartItems. How can this be done? Here's the query I already have, but it's not working. query results in an enumeration with 100 items, far more than I expected. Dim query = From cartItem In Cart.CartItems Group Join discountItem In DiscountGroup.DiscountItems On cartItem.SKU Equals discountItem.SKU Into Group Select SKU = cartItem.SKU, CartItems = Group Return query.Min(Function(x) x.CartItems.Sum(Function(y) y.Quantity))

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  • How to run an "empty" Windows Application that only has a NotifyIcon?

    - by devoured elysium
    I want to make an Application that only has a NotifyIcon. It doesn't need to have at all a "Main" Form. When I want to achieve something like this, I just create an invisible form and run it, but would there be a more "elegant" way of doing this, I'd like to know it. How do you generally do this? This application can't be a Windows Service, as having the NotifyIcon and its Context Menus is important (each one of them will run a different command). Thanks

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  • Splitcontainer, Make a fixed panel

    - by Marcx
    I have a splitcontainer with horizontal orientation. I want a fixed height for panel2 only during form resize, and let splitter resize panel2 Now I'm doing it this way, but I'm not satisfy because user notice the panel resize. Private Sub Form1_ResizeBegin(ByVal sender As Object, ByVal e As System.EventArgs) _ Handles Me.ResizeBegin spil = SplitContainer1.Height - SplitContainer1.SplitterDistance End Sub Private Sub Form1_ResizeEnd(ByVal sender As Object, ByVal e As System.EventArgs) _ Handles Me.ResizeEnd SplitContainer1.SplitterDistance = SplitContainer1.Height - spil End Sub Any ideas?

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  • MS Access Bulk Insert exits app

    - by Brij
    In the web service, I have to bulk insert data in MS Access database. First, There was single complex Insert-Select query,There was no error but app exited after inserting some records. I have divided the query to make it simple and using linq to remove complexity of query. now I am inserting records using for loop. there are approx 10000 records. Again, same problem. I put a breakpoint after loop, but No hit. I have used try catch, but no error found. For Each item In lstSelDel Try qry = String.Format("insert into Table(Id,link,file1,file2,pID) values ({0},""{1}"",""{2}"",""{3}"",{4})", item.WebInfoID, item.Links, item.Name, item.pName, pDateID) DAL.ExecN(qry) Catch ex As Exception Throw ex End Try Next Public Shared Function ExecN(ByVal SQL As String) As Integer Dim ret As Integer = -1 Dim nowConString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + System.AppDomain.CurrentDomain.BaseDirectory + "DataBase\\mydatabase.mdb;" Dim nowCon As System.Data.OleDb.OleDbConnection nowCon = New System.Data.OleDb.OleDbConnection(nowConString) Dim cmd As New OleDb.OleDbCommand(SQL, nowCon) nowCon.Open() ret = cmd.ExecuteNonQuery() nowCon.Close() nowCon.Dispose() cmd.Dispose() Return ret End Function After exiting app, I see w3wp.exe uses more than 50% of Memory. Any idea, What is going wrong? Is there any limitation of MS Access?

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  • VB.NET looping through XML to store in singleton

    - by rockinthesixstring
    I'm having a problem with looping through an XML file and storing the value in a singleton My XML looks like this <values> <value></value> <value>$1</value> <value>$5,000</value> <value>$10,000</value> <value>$15,000</value> <value>$25,000</value> <value>$50,000</value> <value>$75,000</value> <value>$100,000</value> <value>$250,000</value> <value>$500,000</value> <value>$750,000</value> <value>$1,000,000</value> <value>$1,250,000</value> <value>$1,500,000</value> <value>$1,750,000</value> <value>$2,000,000</value> <value>$2,500,000</value> <value>$3,000,000</value> <value>$4,000,000</value> <value>$5,000,000</value> <value>$7,500,000</value> <value>$10,000,000</value> <value>$15,000,000</value> <value>$25,000,000</value> <value>$50,000,000</value> <value>$100,000,000</value> <value>$100,000,000+</value> </values> And my function looks like this Public Class LoadValues Private Shared SearchValuesInstance As List(Of SearchValues) = Nothing Public Shared ReadOnly Property LoadSearchValues As List(Of SearchValues) Get Dim sv As New List(Of SearchValues) If SearchValuesInstance Is Nothing Then Dim objDoc As XmlDocument = New XmlDataDocument Dim objRdr As XmlTextReader = New XmlTextReader(HttpContext.Current.Server.MapPath("~/App_Data/Search-Values.xml")) objRdr.Read() objDoc.Load(objRdr) Dim root As XmlElement = objDoc.DocumentElement Dim itemNodes As XmlNodeList = root.SelectNodes("/values") For Each n As XmlNode In itemNodes sv.Add(New SearchValues(n("@value").InnerText, n("@value").InnerText)) Next SearchValuesInstance = sv Else : sv = SearchValuesInstance End If Return sv End Get End Property End Class My problem is that I'm getting an object not set to an instance of an object on the sv.Add(New SearchValues(n("@value").InnerText, n("@value").InnerText)) line.

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  • how to populate different records in row of a Grid?

    - by ahmed
    Helo, I have a two Grid where I have to display some records from the table. The table consists of employee names ,manager names and their comments. Now on the first gird I am fetching data of employee names. Now on the second grid I have to display data of manager names and their comments. The data is on the same table. On show button of the first grid it shows all the employees. then on AdvWebGrid.ClickLink or any selected user on the first grid , i have to display the manager names and their comments on the second grid. How can I do that ? Hope my problem is clear?

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  • What's wrong with this SQL Server query ?

    - by ClixNCash
    What's wrong this T-SQL query : Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True") Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT COUNT(*) FROM Table1 WHERE Name ='" + TextBox1.Text + "'", SQLData) SQLData.Open() If cmdSelect.ExecuteScalar > 0 Then Label1.Text = "You have already voted this service" Return End If Dim con As New SqlConnection Dim cmd As New SqlCommand con.Open() cmd.Connection = con cmd.CommandText = "INSERT INTO Tabel1 (Name) VALUES('" & Trim(Label1.Text) & "')" cmd.ExecuteNonQuery() Label1.Text = "Thank You !" SQLData.Close() End Sub

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  • Override An Existing Property as a Child form of its return type

    - by Jason
    I apologize if that title is confusing. This question may be a result of lack of coffee and/or sleep, but my mind is not working correctly right now. Anyways, I have an inheritance tree like such (I know the architecture isn't ideal): BaseClass GeneralForm : Inherits BaseClass SpecificForm : Inherits GeneralForm And an object like so: MyItem MySpecificItem : Inherits MyItem I have Items As List (Of MyItem) as a property in BaseClass. I would like for SpecificForm to somehow override Items to return type List (Of MySpecificItem). I feel like this is easy to do, but again, my head is spinning and I can't think straight at the moment. Thank you so much in advance.

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  • MSMQ - Message Queue Abstraction and Pattern

    - by Maxim Gershkovich
    Hi All, Let me define the problem first and why a messagequeue has been chosen. I have a datalayer that will be transactional and EXTREMELY insert heavy and rather then attempt to deal with these issues when they occur I am hoping to implement my application from the ground up with this in mind. I have decided to tackle this problem by using the Microsoft Message Queue and perform inserts as time permits asynchronously. However I quickly ran into a problem. Certain inserts that I perform may need to be recalled (ie: retrieved) immediately (imagine this is for POS system and what happens if you need to recall the last transaction - one that still hasn’t been inserted). The way I decided to tackle this problem is by abstracting the MessageQueue and combining it in my data access layer thereby creating the illusion of a single set of data being returned to the user of the datalayer (I have considered the other issues that occur in such a scenario (ie: essentially dirty reads and such) and have concluded for my purposes I can control these issues). However this is where things get a little nasty... I’ve worked out how to get the messages back and such (trivial enough problem) but where I am stuck is; how do I create a generic (or at least somewhat generic) way of querying my message queue? One where I can minimize the duplication between the SQL queries and MessageQueue queries. I have considered using LINQ (but have very limited understanding of the technology) and have also attempted an implementation with Predicates which so far is pretty smelly. Are there any patterns for such a problem that I can utilize? Am I going about this the wrong way? Does anyone have an of their own ideas about how I can tackle this problem? Does anyone even understand what I am talking about? :-) Any and ALL input would be highly appreciated and seriously considered… Thanks again.

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  • How to find the Dynamically added gridview footer control

    - by harold-sota
    I have add controls to my gridview footer, here is the code SGridView.ShowFooter = True For i As Integer = 0 To ctrList.Count Dim ctr As Control = CType(ctrList.Item(i), Control) SGridView.FooterRow.Cells(i + 1).Controls.Add(ctr) Next the ctrList contain Controls textBox, checkbox dropdowlist ect. there is all ok but when i wont to get the text or value or checked value of controls i cant cast the controls in rowcommand event Here is the code: Protected Sub SGridView_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles SGridView.RowCommand If e.CommandName = "Add" Then Dim ctrList As ControlCollection = SGridView.FooterRow.Controls For Each ctr As Control In ctrList If TypeOf ctr Is TextBox Then Dim name As TextBox = CType(ctr, TextBox) Dim val As String = name.Text End If Next End If this excample is for the textBox control. Any idea?

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  • What features are heavily used in C# 2.0, but is not available in VBNET 2.0, and how to workaround?

    - by Will Marcouiller
    I don't want a war between VBNET and C# developpers, neither is my goal to open a C# VS VBNET confrontation. I would like you all to list a feature that is heavily used in C#, but is not available in VBNET 2.0, and how would you work around to achieve a similar behaviour or purpose? For example: C# Accepts void (return) lambda expressions. Here's an example with FNH mapping: Component(x => x.Address, m => { m.Map(x => x.Number); m.Map(x => x.Street); m.Map(x => x.PostCode); }); This is impossible to do before VBNET 4.0 (supposed to be doable in VBNET 4.0) VBNET Must write a helping method (Sub), and provide the AddressOf this method in order to workaround. Private Sub Helper(ByVal m As MType) m.Map(Function(x) x.Number) m.Map(Function(x) x.Street) m.Map(Function(x) x.PostCode) End Sub ... Component(Function(x) x.Address, AddressOf Helper) Now I know, it is not VBNET 2.0, but this is an example. VBNET 3.0 and 3.5 can used too. Please just mention what version of VBNET this refers to.

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  • connecting to exchange server

    - by MyHeadHurts
    I am using this code to connect to my exchange server. I am trying to retrieve an inbox of basically emails that have not been read however, i am just getting a bunch of gibberish and its reading an email. can you help me modify my code to just read the most recent messages. Try tcpClient.Connect(hostName, 110) Dim networkStream As NetworkStream = tcpClient.GetStream() Dim bytes(tcpClient.ReceiveBufferSize) As Byte Dim sendBytes As Byte() networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("User " + userName + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("Pass " + userPassword + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("STAT" + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("RETR " + messageNumber + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) returnMessage = Encoding.ASCII.GetString(bytes) EmailContent.Text = returnMessage sendBytes = Encoding.ASCII.GetBytes("QUIT" + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) tcpClient.Close() Catch ex As Exception EmailContent.Text = "Could not retrieve email or your inbox is empty" End Try

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