c# Creating MDI Child of Form1 from Form2

Question

I am attempting to instantiate an instance of From3 as a child of Form1 by clicking a button on Form2.

However, when using the following code in Form2:

Form3 PFForm = new Form3();
PFForm.MdiParent = Form1;
PFForm.Show(); 

... to instantiate Form3 as a child of Form1 I get the error:

"'Form1' is a type, which is not valid in the given context."

Answer 1

Is Form2 also a child of Form1?

If yes, then:

Form3 PFForm = new Form3();
PFForm.MdiParent = this.MdiParent;
PFForm.Show();