public static void ShowForm(frmDbObjectSearch frm) { if (frm == null || frm.IsDisposed) { return; } if (Program.MainForm.DockPanel.DocumentStyle == DocumentStyle.SystemMdi) { frm.MdiParent = Program.MainForm; frm.Show(); frm.WindowState = System.Windows.Forms.FormWindowState.Maximized; } else { frm.Show(Program.MainForm.DockPanel); } }