How to deal with operation overloading while exposing WCf

Rv Singh

12y1.8k

By default overload operations (methods) are not supported in WSDL based operation. However by using Name property of OperationContract attribute, we can deal with operation overloading scenario.

[ServiceContract] 
interface ICalculator 
{ 
   [OperationContract(Name = "AddInt")] 
   int Add(int arg1,int arg2); 
 
   [OperationContract(Name = "AddDouble")] 
   double Add(double arg1,double arg2); 
}

Notice that both method name in the above interface is same (Add), however the Name property of the OperationContract is different. In this case client proxy will have two methods with different name AddInt and AddDouble.

3 Replies

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Biswa Pujarini Mohapatra12y ago
Yes you are absolutely correct and the implementation of wcf method overload also looks fine. When you expose this to client, there would be twomethods addint() and adddouble() to client. NAME PARAMETER will hide the origional add method.
using WCFConsoleClentApp.MyTest;
namespace WCFConsoleClentApp
{
    class Program
    {
        static void Main(string[] args)
        {
            TestClient client = new TestClient();
            int intretun = client.addint(1, 1);
            double doublereturn = client.adddouble(12.2, 10.1);

        }
    }
}
0
Biswa Pujarini Mohapatra12y ago
Yes you are absolutely correct and the implementation of wcf method overload also looks fine. When you expose this to client, there would be twomethods addint() and adddouble() to client. NAME PARAMETER will hide the origional add method.
using WCFConsoleClentApp.MyTest;
namespace WCFConsoleClentApp
{
    class Program
    {
        static void Main(string[] args)
        {
            TestClient client = new TestClient();
            int intretun = client.addint(1, 1);
            double doublereturn = client.adddouble(12.2, 10.1);

        }
    }
}
0
Jignesh Trivedi12y ago
hi,

I think WSDL is not a object oriented language and does not support these features of OOP.
0