Create a new form instance inside parent with the ability to access the parent form

Question

I tried to create a new form inside the Parent. I set FormBorderStyle to none.

When I am adjusting MDIParent to the myForm, it gave me a sick looking error like this:

System.ArgumentException : The given Form is not being recalled as a MdiContainer.

This is my code for creating a new Windows Form.

FrmHome myForm = new FrmHome ();
myForm.TopLevel = false;
pnlContainer.Controls.Add(myForm);
myForm.Show();

A new Windows Forms _application_? Like are you loading another EXE or dynamically compiling another application? Or do you just mean a new form? — ProgrammingLlama, Dec 04 '18 at 05:10

jazb · Answer 1 · 2018-12-04T05:24:52.393

2

The Mdi parent must have it's IsMdiContainer property set to True.

You can set this property at design time in your main form or runtime :-

Form1 f1 = new Form1();
f1.MdiParent = this;
f1.Show();

Form1 is the name of the form that you want to show.

Form.IsMdiContainer Property

Property Value Boolean true if the form is a container for MDI child forms; otherwise, false. The default is false.

edited Dec 04 '18 at 05:24

answered Dec 04 '18 at 05:10

jazb

1 Answers1