c# eventArgs form events

Question

I have multiple form with the same design like:

In Form1{
Form2 = new Formtoopen();
Form2.Resize += new EventHandler(Form2_Resize);
Form2.FormClosing +=new FormClosingEventHandler(Form2_FormClosing);
}

and then the events:

In Form1{
protected virtual void Fly_Form2_Closing(object sender, FormClosingEventArgs e)
{
   if (e.CloseReason == CloseReason.UserClosing)
   {
      e.Cancel = true;
      Fly_Form2.Hide();
   }
}

protected virtual void Fly_Form2_Visiblechanged(object sender, EventArgs e)
{
   //some code
}
}

I would like to add the Form2 Type in the EventArgs that is empty from now. I think it would make my code simpler as I have multiple Form sharing the same code.

How could I do that? I thought about the event custom arguments way but i'm not sure with Type...

Could you help me?

Thanks

Answer 1

Here is something that works:

 In Form1{
Form2 = new Formtoopen();
Form3 = new Formdata();
Form2.FormClosing +=new FormClosingEventHandler(Form_FormClosing);
Form3.FormClosing += new FormClosingEventHandler(Form_FormClosing);
}

 In Form1{
protected virtual void Form_Closing(object sender, FormClosingEventArgs  e)
{
if (e.CloseReason == CloseReason.UserClosing)
{
  e.Cancel = true;
  ((Form)sender).Hide();
}
}

Retrieving the sender with cast Form from the object sender.

Thanks a lot M.Passant!