AddParameter Method
Adds a parameter to the query string.
Syntax
int AddParameter(char* lpszparamName, char* lpszparamValue);
Remarks
This method is used to add a parameter name and value to the query string to be sent to the server. Note that any parameters added with this method will be URL encoded automatically.
If ContentType is set to "application/x-www-form-urlencoded", any parameters added with this method will be sent to the server as form data in the body of the request, instead of as query string parameters.