C# Signature:

// You should never PInvoke to GetLastError.  Call Marshal.GetLastWin32Error instead!

VB Signature:

' You should never PInvoke to GetLastError.  Call Marshal.GetLastWin32Error instead!

Notes:

Calling GetLastError directly via PInvoke is not guaranteed to work due to the CLR's internal interaction with the operating system. Instead, call Marshal.GetLastWin32Error.

Alternative Managed API:

System.Runtime.InteropServices.Marshal.GetLastWin32Error