Guys, i need a help.
I want to write a wcf service to send sms.
Befor sending sms i need to check user login details.
i wrote following methods separately
[OperationContract]
bool UserLogin(string username, string password);
[OperationContract]
bool SendSms(string messageBody, string tagname, string phoneNumber);
but i want to allow the user of this service to login first and then use that sendSMS method.
How can i do that??