Task vs async Task
18:48 22 Jan 2018

Ok, I've been trying to figure this out, I've read some articles but none of them provide the answer I'm looking for.

My question is: Why Task has to return a Task whilst async Task doesn't? For example:

public override Task TokenEndpoint(OAuthTokenEndpointContext context)
{
    // Code removed for brevity.

    return Task.FromResult(null);
}



As you can see there, that method isn't async, so it has to return a Task.



Now, take a look at this one:



public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
{
    // Code removed for brevity...
    if(user == null)
    {
        context.SetError("invalid_grant", "username_or_password_incorrect");
        return;
    }

    if(!user.EmailConfirmed)
    {
        context.SetError("invalid_grant", "email_not_confirmed");
        return;
    }

    // Code removed for brevity, no returns down here...
}




It uses the async keyword, but it doesn't return a Task. Why is that?
I know this may be probably the stupidest question ever.
But I wanna know why it is like this.


              
      

          
                  c#
                .net
                task