Getting an error while consuming WCF Web service reference

Question

Hello Sir,

I'm using below llink to create and consume a WCF webservice in Xamarin forms(cross platform), but I'm getting a error show below.

 

Severity Code Description Project File Line Suppression State

Error CS1061 'Task >' does not contain a definition for 'ToList' and no accessible extension method 'ToList' accepting a first argument of type 'Task >' could be found (are you missing a using directive or an assembly reference?) LoginForm C:\Users\test\source\repos\LoginForm\LoginForm\LoginForm\MainPage.xaml.cs 26 Active

 The data type selected while calling a web service was "System.Collections.Generic.List" for Collection type and for Dictionary collection type it was by default "System.Collections.Generic.Dictionary".

 

Below is the  code which im using in MainPage.Xaml.cs

private void BtnLogin_Clicked(object sender, EventArgs e)

{

try

{

UserDetails userinfo = new UserDetails();

userinfo.UserName = usernameEntry.Text;

userinfo.Password = passwordEntry.Text;

List msg = obj.LoginUserDetailsAsync(userinfo).ToList();

messageLabel.Text = "Employee Name = " + msg.ElementAt(0) + " Employee Id = " + msg.ElementAt(1);

}

catch (Exception ex)

{

messageLabel.Text = "Wrong Id Or Password";

}

}

 

Error is displayed on ToList().

 

Please help me 

Thanks in advance