C # access interface with parameters, WebClient method,

C # access interface with parameters, WebClient method,

Public static string GetPostString (string urladdress, string @ params)
{
String returnValue = null;
Using (WebClient client = new WebClient ())
{
Client. Headers. Add ("Content-Type", "application/x-www-form-urlencoded ");
Client. Encoding = Encoding. UTF8;
ReturnValue = client. UploadString (urladdress, "POST", @ params );
}
Return returnValue;
}

------------------------- The above is the interface query with colleagues -------------------------------------