CODEWITHSUNDEEP
c#winforms.net-4.0positioningcenter
Tausif Khan
Tausif Khan

Reputation: 2278

Show Dialog box at center of its parent

It's been a mess to show a DialogBox at the center of its parent form. Here is a method to show a dialog.

I am positioning its parent to center but not able to center the DialogBox

private void OpenForm(Object point, Object height, Object width)
{
    FormLoading frm = new FormLoading();
    Point temp = (Point)point;
    Point location = new Point(temp.X + (int)((int)width) / 2, 
                               temp.Y + (int)((int)height) / 2);
    frm.Location = location;
    frm.ShowDialog();
}

private void btnView_Click(object sender, EventArgs e)
{
    try
    {                    
        ThreadStart starter= delegate { OpenForm(currentScreenLocation, 
                                                 this.Height, this.Width); };
        Thread t = new Thread(starter);
        t.Start();
        ////// Some functionality here...
        t.Abort();
    }
    catch (Exception)
    {
    }
}

Upvotes: 59

Views: 101813

Answers (5)

Mohsen K
Mohsen K

Reputation: 287

if you are making a custom MessageBox,you can simply put this:

CenterToParent();

in your custom MessageBox formload() method.

Upvotes: 8

Billy Xd
Billy Xd

Reputation: 89

NewForm.Show();

NewForm.Top = (this.Top + (this.Height / 2)) - NewForm.Height / 2;
NewForm.Left = (this.Left + (this.Width / 2)) - NewForm.Width / 2;

Upvotes: 4

DuyLuc
DuyLuc

Reputation: 1822

In addition, if you want to set up arbitrary location you can use this

FormLoading frm = new FormLoading();
Point location = new Point(300, 400);
frm.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
frm.Location = location;
frm.ShowDialog();

Upvotes: 5

user2070102
user2070102

Reputation: 157

form1.StartPosition = FormStartPosition.CenterScreen;

See http://msdn.microsoft.com/en-us/library/system.windows.forms.form.startposition(v=vs.110).aspx

Upvotes: 14

Kornelije Petak
Kornelije Petak

Reputation: 9562

You might want to check the Form.StartPosition property.

http://msdn.microsoft.com/en-us/library/system.windows.forms.form.startposition.aspx

something along the lines of:

private void OpenForm(Form parent)
{
    FormLoading frm = new FormLoading();
    frm.Parent = parent;
    frm.StartPosition = FormStartPosition.CenterParent;
    frm.ShowDialog();
}

This of course requires setting the form's parent.

Upvotes: 121

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