How to use digital signature for sign a XML and verify in window application C#

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C#4.0

Dear All ,

**Winodow Application C#**

I Am Beginner in Window Application C# Project.I Have N(Code Solution) DSC Token Device .I Am Generating a XML Document And I Want To Use DSC Token For Sign The Xml Document And Store Into Database. And After That I Need To Verify That XMl Document.

1- How DSC TOken Will Detect.
2- How to Sign In Xml Document .
3- How To Verify XMl Document .

Thanks

What I have tried:

I Am Using With Web Application Its Working Fine With Java Script . But How We Can Use In Window Application C#.