Optional Parameters In C#

Optional Parameters:-

1 1)      Optional Parameters should be given at last of all parameters.

2 2)      More than one optional parameter is also allowed, but should be at last.

3 3)      The definition of the optional parameter is as :

public async Task<IHttpActionResult> GetOptionalParams(string param1, string param2 = "",string param3="")

        {

               // some await code

                   return Ok();

  }