Open-Xchange-SOAP-C-Sharp
From Open-Xchange
How to provision Open-Xchange with C# and SOAP
Here is an example on how create a C# project in Microsoft Visual Studio 2010.
In your C# project, right click on References and then on Add Service Reference:
In the dialogue click on Advanced:
In the following dialogue, select Add Web Reference:
and in the URL input field enter the URL to your open-xchange servers OXContextService:
after clicking on Add Reference, the new service should be visible like shown below: