private void FrnMain_Load(object sender, EventArgs e) { try { this.Left = this.Top = 0; this.Width = Screen.PrimaryScreen.WorkingArea.Width; this.Height = Screen.PrimaryScreen.WorkingArea.Height; Screen screen = AddFunc.GetSecondaryScreen(); //this.Location = screen.WorkingArea.Location; //this.Size = new Size(screen.WorkingArea.Width, screen.WorkingArea.Height); } catch (Exception ex) { MessageBox.Show(ex.Message); } }