How to center a form using showdialog (.NET Compact Framework)

Question

I want to centre a popup form launched using Form.ShowDialog() in .NET Compact Framework. I dont see any property like StartPosition in .NET CF Form object.

Can someone please suggest me how to centre popups in .NET CF 3.5?

Answer 1

You can make an extension method that does the work for you:

public static class FormExtensions
{
    public static void CenterForm(this Form theForm)
    {
        theForm.Location = new Point(
            Screen.PrimaryScreen.WorkingArea.Width / 2 - theForm.Width / 2,
            Screen.PrimaryScreen.WorkingArea.Height / 2 - theForm.Height / 2);
    }
}

You call it like this:

TheDialogForm f = new TheDialogForm();
f.CenterForm();            
f.ShowDialog();

Answer 2

Set the left and Top properties on the of the form in 'frmDialog_Activated event

Private Sub frmDialog_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Activated
        Me.Left = (frmMain.Width - Me.Width) / 2 ' AS Your Wish
        Me.Top = (frmMain.Height - Me.Height) / 2 + 165 '' AS Your Wish
    End Sub

Answer 3

If you want your popup form appear in center of screen by default you can just set a starting position for it in form properties, it should sound like 'Center parent'.

Something like that: form1.StartPosition = FormStartPosition.CenterScreen;