I have used SOAP UI to check my web service. It supports POST, XML and SOAP 
content types. The web service method takes three arguments of the three, the 
first one is of type char. The SOAP UI returns a serialization error, and 
after I convert char into string it is working fine. Is this a limitation of 
web service method or problem with SOAP UI?

How do I write a client application in C# to consume the web service using 
different content types, such as POST, XML and SOAP?

Note: My web service need to support all these three.

Thank you

Regards
Raj