Show a child form in the centre of Parent form in C#

c#, winforms

Solution

Try:

loginForm.StartPosition = FormStartPosition.CenterParent;
loginForm.ShowDialog(this);

Of course the child form will now be a blocking form (dialog) of the parent window, if that isn't desired then just replace `ShowDialog` with `Show`..

loginForm.Show(this);

You will still need to specify the StartPosition though.

Problem

I create a new form and call from the parent form as follows: ``` loginForm = new SubLogin(); loginForm.Show(); ``` I need to display the child form at the centre of the parent. So,in the child form load I do the foll:` ``` Point p = new Point(this.ParentForm.Width / 2 - this.Width / 2, this.ParentForm.Height / 2 - this.Height / 2); this.Location = p; ``` But this is throwing error as parent form is null. I tried setting the Parent property as well, but didn't help. Any inputs on this?

Original source