Convert this C# code to VB.NET?

[VagabondSW]

I am trying to convert the following C# code to Visual Basic.NET, but I am having a hard time:

 

private IntPtr m_context;

public object UserData
{
 get { return (object)((GCHandle)m_context).Target; }
}

 

When I try to convert this to Visual Basic.NET, I came up with the following code:

 

Private m_context As IntPtr

Public ReadOnly Property UserContext() As Object
 Get
   Return CObj(CType(m_context, GCHandle).Target)
 End Get
End Property

Unfortunately, where the C# version will build without errors, the Visual Basic.NET version reports the following error in the Task List:

 

Value of type 'System.IntPtr' cannot be converted to 'System.Runtime.InteropServices.GCHandle'.

 

I figure I must be doing something wrong. Any help or suggestions would be greatly appreciated.

[snarfblam]

I don't know what the code is supposed to do but it looks like your difficulty lies in converting from an IntPtr to a GCHandle. Try this:

 

Private m_context As IntPtr

Public ReadOnly Property UserContext() As Object
 Get
   Return GCHandle.op_Explicit(m_context).Target
 End Get
End Property

[VagabondSW]

Thanks. That did the trick.

[snarfblam]

You might want to read up in operator overloading. It isn't supported in Vb.Net 2003, but you can explicitly call the function that an operator is mapped to. A cast would be op_Explicit, Addtion would be op_Addition, etc.

[bri189a]

You know that's a good point marble - I've not even thought to do that in VB and really I should've on some things... however the only way I've ever been able to call those is through reflection in VB - it's a syntax that I can't get to work now that you got me trying it...(I use Option Strict On btw) - can you show me an example of using op_Addition and op_Explicit (where your casting from custom base types to custom derived types). Whatever it is I know it's lack of brain cells on my end; but I've had a 40 hour week already and it's only Wed... so that may be part of it.