Hello Friends, I want to send some data to my server using USSD is it possible? If yes, please provide me some sample code for how to use USSD for sending data.

http://community.opennetcf.com/forums/p/10591/65820.aspx

Hi Robert, I already saw this link but problem is that i am not understanding how to use it into code do you have any idea ar any sample code to send USSD message to server.

One of the essential skills for any Windows Mobile and/or Windows CE developer working with the .NET Compact Framework is to understand the techniques required to use Platform Invocation Services (P/Invoke). This is the process of calling native API methods, such as the Extended TAPI functions mentioned, from managed code.

Here's a tutorial on MSDN to get you started: http://msdn.microsoft.com/en-us/library/aa288468(VS.71).aspx

Ok I got it. but i have one doubt that if i want to send this USSD message to my server is this possible..?

 There's a registry key at HKEY_LOCAL_MACHINE\Services\USSD\ that points to the USSD server DLL. It might be possible to specify your own DLL to listen for USSD instructions. It's not something I've ever tried.