Xamarin Form consuming asmx web service

Question

I have a xamarin form application that consumes asmx web service. I have a web method that returns a List<class>. However, I encounter error in the class declared under Xamarind Droid to implement the interface. Below is my code:

 

public async Task<List<IProject>> GetAllProjects(string criteria = null)

{

return await Task.Run(() =>

{

var result = service.GetAllProjects();

return new List<IProject>(result);

});

}

 

The error is with "return new List<IProject>(result);". Error:CS1503 Argument 1: cannot convert from 'IMSr2.Droid.IMSWS.Project[]' to 'int'.

** service.GetAllProjects(): this is the webmethod.

How should I return class result from the web service?