Convert C to VB.net

2011-08-03

Question

_{Wednesday, August 3, 2011 2:40 PM}

typedef

struct

{

unsigned

long length;

unsigned

char *data;

// binary data

} ABUFFER;

ABUFFER id;

unsigned

char sID[64];

memset(sID, 0,sizeof (sID));

id.length =sizeof(sID);

id.data = sID;

Need some help to convert above line to VB.net.

Thanks in advance

tan

// length of binary data

All replies (3)

_{Wednesday, August 3, 2011 6:47 PM ✅Answered | 1 vote}

Sometimes translate C/C++ to VB.NET line by line dont seem to work well or not working at all without compiler error unless you understand what the code does. Below is what i came up with

Public Structure ABUFFER
    Public length As UInteger
    Public data() As Byte
  End Structure

  Sub setupStruct()
    Dim id As New ABUFFER
    Dim sID() As Byte = New Byte(63) {}
    'memset is not needed in vb.net
    id.length = sID.Length
    id.data = sID
  End Sub

kaymaf

CODE CONVERTER SITE

http://www.carlosag.net/Tools/CodeTranslator/.

http://www.developerfusion.com/tools/convert/csharp-to-vb/.

_{Thursday, August 4, 2011 2:39 AM}

Hmmmm... i'm still getting error--> Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

I'm try call function in C's DLL with PInvoke method which mean

In C Code

int

GetStatus (IN UCHAR *ID,OUT UCHAR *Status,OUT USHORT *Count,OUT ULONG *Minute,OUT ABUFFER *SID);

In VB.Net, i have this line

<DllImport("somespi.dll")> Public Shared Function _

GetStatus(ByVal ID() As Byte,<Out()> ByVal Status As Byte, <Out()> ByVal Count() As UInt16, <Out()> ByVal Minute() AsUInt32, <Out()> ByVal byBuffer As ABUFFER) AsInt32 End Function

Public Structure ABUFFER
Public length As UInteger
Public data() As Byte
End Structure

Sub setupStruct()
    Dim id As New ABUFFER,    Dim Status As Byte,Dim Count() As UInt16={0}, Dim Minute() As UInt32={0}
    Dim sID() As Byte = New Byte(63) {}
    'memset is not needed in vb.net
    id.length = sID.Length
    id.data = sID

GetStatus('test',Status ,Count,Minute)

End Sub

Is that anything wrong with the code?

tan

_{Thursday, August 4, 2011 4:10 PM}

Did you write C/C++ code yourself or is from someone?

As i said in my first post, sometimes is pain in the neck to know exact data type when converting C/C++ to .net. You have to play around with other possibilities such as UChar = string

By the way, if you have access to the C/C++ code, you can post this issue in C++ forum maybe someone can shed light on it for you.

C++ forum : http://social.msdn.microsoft.com/Forums/en-US/vcgeneral/threads

kaymaf

CODE CONVERTER SITE

http://www.carlosag.net/Tools/CodeTranslator/.

http://www.developerfusion.com/tools/convert/csharp-to-vb/.

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Convert C to VB.net

Question

All replies (3)

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