VB.NET Declare converted to C#

Question

I have access to VB.NET project that calls a SCAN_INIT function from a dll called ScanWrapper.dll that is attached to the project (not a reference, just added as an existing item) This is the call: Private Declare Sub SCAN_INIT Lib "ScanWrapper.dll" Alias "#2" (ByVal hwnd As IntPtr) how would i do the same thing using c#? TIA