C# to Vb.net conversion (byte pointers etc)

Hello, I need to convert the following code from C# to Vb.net (it's part of an EMV API). -------------------------------------------------------------------------------------------------------- unsafe public uint InputPIN(ref byte pPinNum) { [login to view URL]("Input Password and Push Enter !"); [login to view URL](); [login to view URL](); if ([login to view URL]) { string strPassword = Invoke(new GetPasswordTextCallback(GetPasswordText), new object[] { }).ToString(); byte[] byPassword = StrToByteArray(strPassword); fixed (byte* _pPinNum = &pPinNum) { byte* ps = _pPinNum; for (int i = 0; i < 4; i++) *(ps + i) = byPassword[i]; } } return 1; } -------------------------------------------------------------------------------------------------------- The result would be like this: -------------------------------------------------------------------------------------------------------- ' InputPin Public Function InputPIN(ByRef pPinNum As Byte) As UInteger [login to view URL]("Input Password and Push Enter !") [login to view URL]() [login to view URL]() If [login to view URL] Then Dim strPassword As String = Invoke(New GetPasswordTextCallback(AddressOf GetPasswordText), New Object() {}).ToString() Dim byPassword As Byte() = StrToByteArray(strPassword) '... ??? End If Return 1 End Function -------------------------------------------------------------------------------------------------------- I am stuck with the conversion of the 'fixed' structure. I think the functions needed are [login to view URL] and/or GCHandle