better way to write this function [closed]

Question

I have a user control which I load into different flowlayoutpanels, on different forms etc.

In this user control i have a function like this:

private void button1_Click(object sender, EventArgs e)
{
    var C = this.Parent.Parent.Parent.Parent.Parent as STP2Main;
    C.DisposeControl(STP_Data.Data.ConfigConfigResource);
}

But how many times I need Parent is dependant on the form I load the control in. So I want to do that on a better way. it is reffering to STP_Design.STP2Main, but when I replace this.Parent etc. with STP_Design.STP2Main I get this error: 'STP_Design.STP2Main' is a 'type', which is not valid in the given context

Any tips?

Answer 1

private IEnumerable<Control> EnumerateParents()
{
   var parent = Parent;
   while (parent != null)
   {
       yield return parent;
       parent = parent.Parent;
   }
}

private void button1_Click(object sender, EventArgs e)
{
    var c = EnumerateParents().OfType<STP2Main>().First();
    c.DisposeControl(STP_Data.Data.ConfigConfigResource);
}