hi .
I read your question i think the following link will solve your problem
http://www.codeproject.com/dotnet/twaindotnet.asp
My Problem
I am implementng Scanning Solution for C#.NET using TWAIN_32.DLL.It will be helpful to me if u show me how to get Supported values of capability in
any of the 4 containers, means how to retrieve supported values for a given capability.