I have the following code example taken from the code of a Form:

    protected void SomeMethod()
    {
        SomeOtherMethod(this.OnPaint);
    }

    private void SomeOtherMethod(Action<PaintEventArgs> onPaint)
    {
        onPaint += MyPaint;
    }

    protected void MyPaint(PaintEventArgs e)
    {
        // paint some stuff
    }

The second method (SomeOtherMethod) has resharper complaining at me. It says of onPaint that "Value assigned is not used in any execution path".

To my mind it was used because I added a method to the list of methods called when a paint was done.

But usually when resharper tells me something like this it is because I am not understanding some part of C#. Like maybe when the param goes out of goes out of scope the item I added to the list gets removed (or something like that).

I thought I would ask here to see if any one knows what resharper is trying to tell me.

(Side Note: I usually just override OnPaint. But I am trying to get OnPaint to call a method in another class. I don't want to expose that method publicly so I thought I would pass in the OnPaint group and add to it.)