Unhelpful error from event hookup

[rchande]

Try to use event hookup on tab at the caret. If you typo-ed your event declaration like I did, you get an error about "couldn't create solution". Perhaps we could

1. Fail, but indicate why it failed
2. Generate an eventhandler with a bad signature (you get the same error if the type doesn't exist, so this might be useful for GFU scenarios).

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

class Eventer
{
    public event EventArgs e;
}

class Program
{
    Eventer e = new Eventer();
    void Main(string[] args)
    {
        this.e.e +=$$
    }

}

[dpoeschl]

The failure is happening here: http://source.roslyn.io/#Microsoft.CodeAnalysis.CSharp.EditorFeatures/EventHookup/EventHookupCommandHandler_TabKeyCommand.cs,256

We could definitely give a better error message here, but using System.EventHandler when the delegate type can't be inferred would be fine too.

[CyrusNajmabadi]

Closing out as not-repro. We don't give any error now. The experience seems fine to me. THe code is in error and doesn't generate anything.