How do I use Ranger in a C# or VB.NET web application?
Ranger cannot be added to a .NET web application in the same way as the sample apps. This is because the C# or VB.NET code is run on the server, and the Ranger ActiveX control must be run client-side in order to interface with the check scanner. Please see the javascript example on the SDK page for client-side scripting with Ranger.
The link below is an MSDN article discussing client-side scripting with ASP.NET
Working with Client-Side Script
http://msdn.microsoft.com/en-us/library/aa479302.aspx