Marshalling And Converting VB6 Code To .NET?
Nov 2, 2009
I am having trouble converting some code from VB6 to VB.NET (I don't have as much experience with .NET). When I run the 'Select function (from the WS2_32.dll library) in .NET, using the same parameters as the VB6 program, it returns a result of -1 (indicating an error). I think the error may be related to an upgrade comment I saw about marshalling, but I was not sure what I needed to do to declare the function differently. Here is the code that I believe is related to the problem (including the upgrade warnings from Visual Studios):
<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi)> Private Structure FD_SET
Dim fd_count As Integer
<VBFixedArray(FD_SETSIZE)> Dim fd_array() As Integer
Public Sub Initialize()
[code]....
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Feb 19, 2010
I am having a problem marshaling data between managed and unmanaged code. So I need to inspect the data at the byte level. What I need to do is store a number, say 8 into a 4-byte integer then copy it to an array bytArray(4) and compare those bytes with other data. I also need to set up the same array and copy it to an integer variable.
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Feb 24, 2009
What is marshalling in vb.net
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Nov 24, 2011
Trying to read the OBJECTDESCRIPTOR on the clipboard. Almost get it. My guess I don't know how to Marshall the structure. I definetly don't know how to handle: ..."null-terminated string whose offset in bytes is specified in the dwSrcOfCopy "Getting this returned variable length string is what I need help with.
Start with this
typedef struct tagOBJECTDESCRIPTOR {
ULONG cbSize;
CLSID clsid;
DWORD dwDrawAspect;
[code]....
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Apr 3, 2007
I'm trying to interact with the Windows SDK to control a Portable Media Device, and am running into problems correctly marshalling variables to the types expected by the SDK DLLs.I have the following code.
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Jun 8, 2009
I m comparing two images in VB.Net..I get the code in C# & dat code is working 100 % Correctly..Now want to convert dat code to vb.net..& i need help in just converting two lines-
[code]...
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May 13, 2012
I need assistance converting the following C# code which works into VB code. The code detects when a specific type of USB device is connected and disconnected and writes the status to a status strip:
[code]...
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Aug 3, 2010
I got this code from msdn[URL]..I have most of it converted but having an issue with the following sub getting it converted correctly Protected Overrides Sub AdjustEventHandlers(ByVal sender As
[Code]...
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Jan 20, 2011
I am converting a c++ code to vb but there is a problem, i dont know how this code work, if you know what is type of SetFilter parameters and SetBitFilter tell me. i cant use SetBitFilter in vb because it give me an error this is cause of i dont declare them correctly or their values. but when i use SetFilter it work few second and it stop working and with a dialog that have 2 button (close and debug)
This is code in c++ :
CODE:
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Feb 16, 2009
I found some code on the net that is supposed to convert a BMP file into a AVI file.
[URL]
The example is in C# so i converted it using a C# to VB.NET converter and fixed a few of the conversion bugs. The code executes but fails on the line 'Throw New AviException("error for AVIFileOpen")' saying 'AVI exception unhandled'.
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Jun 30, 2009
I have some code, that I am converting from C# to VB, in the code is the following line.
int index = ((int)document.GetCharAt(wordOffset +1)) % 256
that translates to something like this:
Dim index as Integer = CInt(document.GetCharAt(wordOffset + 1)) Mod 256
The problem is that the GetCharAt() function returns a Char type (pretty obvious from the name). VB throws an error saying that Type Char can't be converted to Type Integer. So my question is, what is the result of the explicit conversion in C# code?
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Feb 5, 2010
I am currently in the process of converting a program I have developed from VB6/VBA to Visual Basic.NET. The object of this function is to run a query on an SQL Server Hosted database and output the results to Excel. I have a couple of last final problems though, in the old vb6 lines:
[Code]...
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Sep 24, 2010
I never used delegate before Currently I am converting some C# code to VB.NET and am having some issue, it says
Error 2 Method 'Private Sub OnNewMessage()' does not have the same signature as delegate 'Delegate Sub OnChangeEventHandler(sender As Object, e As System.Data.SqlClient.SqlNotificationEventArgs)'.
[code]...
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Apr 14, 2009
I'm trying to convert the code below to C#?
Dim inFile As System.IO.FileStream
Dim binaryData() As Byte
Dim strFileName As String
[code]....
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Apr 12, 2009
I was looking for a way to get a direct link from mediafire's file hosting service. By default, when a user visits a download link, he will be presented with a download page where he has to wait for the download to be processed and then a link will appear.This link will appear in the div id 'download_link'.[url]
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Mar 28, 2012
I have created a custom ribbon for Excel 2010. This ribbon has a custom tab with various custom buttons. I have these buttons programmed to run an existing Macro in Excel. This is functioning just fine, but I would rather have the button run the code instead of activating the Macro. Basically, the Macro inserts a template worksheet after the active sheet.how to convert this simple VBA code to VB.Net?
Sub Insert_Sheet_AfterActiveSheet()
Sheets.Add After:=ActiveSheet, Type:="C:template sheet.xls"
End Sub
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Aug 9, 2009
I have problems in converting the following code-snippet from C# to VB.Net:
if ((currentItem.Tag as FileSystemKind?) != FileSystemKind.File)
{
if (currentFileName == GOBACK)
[code]......
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Aug 15, 2012
I'm converting some C# code to VB.Net, as it's a language I know better, I've got some code that I can't figure out...
Dim mybtn As New ImageButton()
mybtn.ImageUrl = _imgUrl
Select Case _buttonType
Case ButtonType.Backpage
[CODE]...........
This is giving 2 errors:
Me.btnBackpage_Click = Delegate 'System.Web.UI.WebControls.CommandEventHandler' requires an 'AddressOf' expression or lambda expression as the only argument to its constructor.
And
mybtn.Command = 'Public Event Command(sender As Object, e As System.Web.UI.WebControls.CommandEventArgs)' is an event, and cannot be called directly. Use a 'RaiseEvent' statement to raise an event.
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Nov 18, 2009
Public Const COLUMN_MODEL_ORDER As String = MDL_ORDER.ColumnName
DataModel.Config.DefaultView is a System.Data.DataView
how can I convert it?:
Dim ModelOrder As Integer = 1
Dim DataModel As New ProfileDataModel(New DBConnection, Me.ProfileID)
If DataModel.Config.DefaultView.Count > 0 Then
[code]....
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Jun 26, 2009
I have this snippet of VB.NET code that I want to convert to VBScript. It basically starts Microsoft Word, displays the Open dialog and mail merges the selected document.
Dim oMissing As Object = System.Reflection.Missing.Value
Dim oEndOfDoc As Object = "\endofdoc"
Dim oFalse As Object = False
'Start Word and create a new document.
Dim oWord As Word._Application
Dim oDoc As Word._Document
[Code]...
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Mar 3, 2011
Visual Studio 2005.I was converting some of my source code to C#.However, when I was doing the code snippet below, I noticed I don't have the IsNumber method.Why is the IsNumber missing? I wanted to use it so that I can force a user to enter only numbers.
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar.IsNumber(e.KeyChar) = False Then
[code]....
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Jan 28, 2012
i am trying to port one of my old vb6 applications to vb 2008 Having trouble coverting this
Call cNavAndWait.navigateAndWait(WebBrowser1, "http://www.mysite.com")
Set HTML = WebBrowser1.Document
For Each HyperLink In HTML.links
[code]....
The associated html code im trying to click looks like this...
<a onclick="document.location.href = '../blah.php' + document.location.search; return false;" href="../files/blah.jpg">Click Here!</a>
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Sep 21, 2009
I was trying to figure out how to convert a string (that the user would input to the program via a textbox) into actual code for the program to compile. For example, if the user was to enter: (5*100)+(20-3). How could you take that inputted string, and have the program solve it and return the value?
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Jan 2, 2012
i'm making a console program that consults a website of my work but it uses https and has a Untrusted certificate so i get this error: This Connection is Untrusted i did some research on the internet about this issue and come up with this code
//for testing purpose only, accept any dodgy certificate. public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
[Code]...
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Mar 7, 2010
All the automated, online converters weren't able to convert this code. Unfortunately my brief knowledge of C# has also let me down. The code originates from a blog, linked from another of my questions.
[Code]...
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Oct 19, 2010
I need to convert a VB.NET colour to a hex code.Here is my code thus far:
TextBox1.Text = ColorTranslator.ToHtml(Button1.BackColor)
The back color of button 1 is red. However when I use this code the textbox types "red" instead of "#ff0000". Is this because when typing HTML, most normal people would type:
<font color="red">
<!--- Instead of typing --->
<font color="#ff0000">
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Dec 10, 2010
where i can find the converter of code from java to vb.net.
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Feb 5, 2007
way to do this without third party components? I have been trying to do it using a reference to Acrobat, but I I cant make it work... Specifically I would like to pass the Save As dialogue a filename and extension....
here is the code I am working with:
AcroXApp = CType(CreateObject("AcroExch.App"), Acrobat.CAcroApp)
'Removing toolbar buttons from the user interface
With AcroXApp
[Code].....
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Jan 27, 2011
i've tried all the online code converters but none of them work on this. explain to me how to transform this sniped it to vb.net?
[Code]...
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Jan 13, 2012
I am having a hard time converting this snippet to VB.NET
Function DecryptPassword(ByVal s As String) As String
Dim i As Integer
Dim sPass As String = s.Trim()
[code]....
It works well in VB6 but throws error when i VB.Net..
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