I am using your ASP Sample (C#) for the form titled: Add new Contact - Simplified Form
I updated web.config with my API key and login/password and can list contacts OK.
When I try to add a contact, I get the error: The remote server returned an error: (400) Bad Request.
Interestingly, I get the same error in the other C# sample project for Campaigns.
Either your samples are out of date, or something has changed on your server.
Regards, Garry @ TriSys
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