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  • Whats the most efficient way to access another forms controls in .NET?

    - by broke
    I'm creating a reporting application, and our customers are going to need to generate some pretty big reports which require quite a bit of memory. Ive been in a re-factoring mood lately, so I was wondering what the best way to access the properties of another open form would be(The reporting viewer opens in a new form.) So far I have: Dim form As MainSelections form = My.Application.OpenForms(2) yay or nay. Thanks

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  • DataColumn expressions

    - by Kumar
    What is the most complex expression you've seen/used ? and what's the limit on the length of the expression that can be used ? I seem to recall something to that effect a while back but can't locate it now !!

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  • When should I implement IDisposeable?

    - by Bobby
    What is the best practice for when to implement IDisposeable? Is the best rule of thumb to implement it if you have one managed object in the class, or does it depend if the object was created in the class or just passed in? Should I also do it for classes with no managed objects at all?

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  • .NET remoting: System references wrong .NET dll, but how to cure ?

    - by Quandary
    Question: I defined an interface like below. The problem now is, that when I add the dll (API.dll) as reference in an asp.net project, it references a wrong API.dll, though I referenced the correct dll. In turn, it doesn't find GetLDAPlookup, but there is another method that is not in defined here, but in an older version of API.dll... I rebuilt the dll I referenced, so it is definitely the latest version that I added as reference. Do I have to add another GUID, or something ? Imports System.Runtime.InteropServices Namespace RemoteObject ''' <summary> ''' Defines server interface which will be deployed on every client ''' </summary> ''' <GuidAttribute("921DE547-32FA-40BB-961A-EA390B7AE27D")> _ Public Interface IServerMethods ''' <summary> ''' Function to call the server from the client ''' </summary> ''' <param name="strMessage">Some text</param> ''' Sub ServerPrint(ByVal strMessage As String) ''' <summary> ''' Function to call the server from the client ''' </summary> ''' <param name="strMessage">Some text</param> ''' <returns>Some interesting text</returns> ''' Function GetLDAPlookup(ByVal strMessage As String) As System.Data.DataSet End Interface End Namespace

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  • Validation is not working

    - by Joby Kurian
    hi...I have one asp content page.Its contain many controls like dropdownlist,textbox etc.All controls are inside a div tag.I gave required field validator for all my drop down list.i have one SAVE button that reside inside another div tag.I gave SAVE button cause validation true.But my problem is that, the validator is not working and the page.Isvalid property is true.What is the problem with my code?

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  • An example of advanced database search

    - by Phil
    Hi there, im looking for an example script. I saw one yesterday but for the life of me I can't find it again today. The task I have is to allow the user to search 1 database table via input controls on an aspx page where they can select and , or , equals to combine fields, generating the sql on the fly with a stringbuilder or similar. (it runs behind the corp firewall) Please can someone point me in the right direction of an example or tutorial I've been working on the page, but have run into problems. Here is a snippet; If NameSearch.Text IsNot String.Empty And andor1v IsNot "0" Then sql += "Surname LIKE '%" & name & "%' " & andor1v & " " ElseIf NameSearch.Text IsNot String.Empty And andor1v Is "0" Then sql += "Surname LIKE '%" & name & "%' " End If

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  • How to deserialize an html div when it has certain attributes to it?

    - by user1676874
    For example this: <div class="link_text"> <a href="http://www.stackoverflow.com"> <strong>Text</strong></a> </div> With normal tags like XML ones it is easy, you just create the class with the same name as the tag, so if the tag is: <something></something> you create a class called something, but how would you do this in HTML in an example div such as that one, with a class attribute inside?

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  • Bind web user control property in markup

    - by Ian Levy
    I'm sure it's elementary but I can't figure it out. This does not work - the the binding expression is passed as string to the control: {<uc:usercontrol runtat="server" message='<%#Me.protectedVariable%>'/>} The code behind include a Page.Databind() call in page_load. But this does work: <uc:usercontrol runat="server" id="usercontrol1"/> And in code behind page_load: usercontrol1.message = Me.protectedVariable Do I have to bind from the code-behind? Is this a page life cycle issue?

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  • Why Isn't My .Net Object Serializable?

    - by Rob P.
    I've got a 'MyDataTable' class that inherits from System.Data.DataTable I've implemented ISerializable in my class and have a 'Public Overrides Sub GetObjectData...' But when I try to serialize the an object of 'MyDataTable' I get an error saying that 'MyDataTable' is not marked as serializable. If I used a DataTable instead - my code serializes correctly. If I add a serializable attribute to the 'MyDataTable' class - it serializes correctly, but I'm told that is unnecessary if I implement ISerializable. Can someone point me in the right direction?

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  • SQL To Filter A SubSet Of Data

    - by Nick LaMarca
    I have an arraylist that holds a subset of names found in my database. I need to write a query to get a count of the people in the arraylist for certain sections i.e. There is a field "City" in my database from the people in the arraylist of names I want to know how many of them live in Chicago, how many live in New York etc. Can someone help me how I might set up an sql statement to handle this. I think somehow I have to pass the subset of names to sql somehow.

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  • embedding dll requirement in program

    - by JGC
    hi I am writing a C# Windows application program and I'm using an add-on for creating chart in it,but when I run this program on another windows which has .net framework but not that package it does not work and give me exception. I want to know how can I correct this problem even with setup file? and if the answer is setup file then how should I do that? thank you

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  • Timeout Expire on INSERT Query

    - by Sachin Gaur
    I am trying to insert a row in a table using simple INSERT Query in a transaction. It works fine in SQL Server but I am not able to insert the data using my business object. I am calling a SELECT query using the Command as: Using cm As New SqlCommand With cm .Connection = tr.Connection .Transaction = tr .CommandType = CommandType.Text .CommandText = Some Select Query .ExecuteScalar() '' Do something .CommandText = Insert Query .ExecuteNonQuery() End With End Using I am getting the Timeout period expired error at ".ExecuteNonQuery()" line. Any other DML query is running perfectly fine at this point. Can anyone tell me the reason?

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  • Properly obsoleting old members in an XML Serializable class in C# VB .NET

    - by George
    Hi! Some time ago I defined a class that was serialized using XML. That class contained a serializable propertyA of integer type. Now I have extended and updated this class, whereby a new propertyB was added, whose type is another class that also has several serializable properties. The new propertyB is now supposed to play the role of propertyA, that is since type of propertyB is another class, one of its members would contain the value that previously propertyA contained, thus making peroptyA obsolete. What I am trying to figure out is how do I make sure that when I desireliaze the OLD version of this class (without propertyB in it), I make sure that the desreializer would take the value of propertyA from the old calss and set it as a value of one of the members of propertyB in a new class? Private WithEvents _Position As Position = New Position(Alignment.MiddleMiddle, 0, True, 0, True) Public Property Position() As Position 'NEW composite property that holds the value of the obsolted property, i.e. Alignment Get Return _Position End Get Set(ByVal value As Position) _Position = value End Set End Property Private _Alignment As Alignment = Alignment.MiddleMiddle <Xml.Serialization.XmlIgnore(), Obsolete("Use Position property instead.")> _ Public Property Alignment() As Alignment'The old, obsoleted property that I guess must be left for compliance with deserializing the old version of this class Get Return _Alignment End Get Set(ByVal value As Alignment) _Alignment = value End Set End Property Can you help me, please?

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  • Set MdiParent to null (Nothing) in FormClosed

    - by serhio
    In my project I observed that in a FormClosed method (that handles FormClosed event) is set MdiParent = Nothing (null). This code makes (? no idea why) that OnLoad(method) on some child panels is raised. Is there any sense to set MdiParent to null (Nothing) in FormClosed?

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  • Sorting Custom Objects with Parameter in VB.Net/C#

    - by Jeffrey Kern
    Let's say I have a custom object of Foo Is there anyway I can sort through a list of these objects, like list<of foo>.sort() and also be able to sort this list with a passable parameter. which will influence the sort? list<of foo>.sort(pValue) I'm guessing I'll need to define two separate sorts, but I am not sure. Thanks!

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  • Inheriting a Base Form but Paste/Cut Commands Not Captured

    - by ohu812
    I created a base form that has a specific size and an icon as a base for all forms created in my project (to be consistent in looks). The problem is, for some reason if I add a Text box to the Child form, I can no longer execute shortcuts like Copy (CTRL+C) etc into the Textbox. What should I do to handle this OTHER THAN writing code to capture those on the KeyUp control? This is also the case for RichTextBox control as well. Thanks

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  • Making a workbook visible

    - by JoeB
    I have the following code: Dim DumpXlApp As Excel.Application = New Excel.Application Dim DumpWkBk As Excel.Workbook DumpWkBk = System.Runtime.InteropServices.Marshal.BindToMoniker(FilePath) DumpXlApp = DumpWkBk.Parent DumpXlApp.Visible = True I can't get the DumpWkBk workbook to become visible. Is the issue DumpXlApp = DumpWkBk.Parent line? I don't think it is the BindToMoniker line because I can do things with DumpWkBk.

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  • VB 2008 - Index was outside the bounds of the array

    - by Jan
    Hey guys I'm having a problem while reading a config.cfg file of my program. I can read the 23. char of the file but I can't read the 24. char (last char in file). This is the code: Dim CFGReader2 As System.IO.StreamReader CFGReader2 = _ My.Computer.FileSystem.OpenTextFileReader(CurDir() & "\Config.cfg") Dim Server(2) As String Server(0) = CFGReader2.ReadToEnd.Chars(23)//This part works If Server(0) = 0 Then Server(1) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". ElseIf Server(0) = 1 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 10 + Server(2) ElseIf Server(0) = 2 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 20 + Server(2) ElseIf Server(0) = 3 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 30 + Server(2) End If And this is the file: Language = 2 Server = 11 Thanks for the answer! Frosty

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  • Strange DataTable behaviour

    - by DocSnuggles
    There´s a strange behaviour in my code which I can´t explain... I have worked arround it but I´d like to know the reason of this behaviour. My Code: If dataset.Tables.Count > 0 Then Dim rows() As DataRow = dataset.Tables(0).Select("FileID = " + fileid.ToString) For Each row As DataRow In rows... the one and only table in dataset is: 18 1 1 testpara42 19 1 2 Para2 23 2 1 Para1 24 2 2 Para42 Where the colums are: ParamID - FileID - ParaPos - Paravalue. I want do filter it so that the only rows I get are the ones with the correct fileid... the result when the selection string is "FileID = 1" is an array with 2 rows... everything is fine... but the filter string "FileID = 2" will return 0 Rows... A filter like "FileID < 1" returns 2 Rows correctly. I really cant´t explain this od behaviour, maybe one of the community does. The Table does have more entries but the Filter string just works with the "FileID = 1" selection. Excuse my bad english. Please explain my mistake to me.

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  • Using ExecuteQuery() with entity framework, entity class.

    - by sfreelander
    I am trying to jump from ASP Classic to asp.net. I have followed tutorials to get Entity Framework and LINQ to connect to my test database, but I am having difficulties figuring out ExecuteQuery(). I believe the problem is that I need an "entity class" for my database, but I can't figure out how to do it. Here is my simple code: Dim db as New TestModel.TestEntity Dim results AS IEnumerable(OF ???) = db.ExecuteQuery(Of ???)("Select * from Table1") From the microsoft example site, they use an entity class called Customers, but I don't understand what that means.

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