Implementing the secondary form inside the main form through the third form

Hi, I have a main form called MainForm I have a received checks form called DepositChequeForm, which is executed inside the MainForm with the help of the DocumentManager control at the time of the call.

I have a notification form called NotificationForm, the checks whose payment date is approaching, are displayed in the form of a list in this form, which is executed independently of the MainForm form.

Now I am going to write a code that when I click on one of the records in the notification list, the DepositChequeForm form will be executed with the help of the DocumentManager control inside the MainForm.

private void notificationGridView_DoubleClick(object sender, System.EventArgs e)
		{
			_chequeType = notificationGridView.GetFocusedRowCellValue("ChequeType").ToString();

			if (string.Compare(_chequeType, "چک های دریافتی") == 0)
			{
				Infrastructure.Functions.NewChidFrom(new Financial.DepositChequeForm(), Infrastructure.ListForms.DepositCheckForm.Text);

			}
		}


public static void NewChidFrom(DevExpress.XtraEditors.XtraForm form, string titleName)
		{
			bool IsOpen = false;

			foreach (System.Windows.Forms.Form frm in System.Windows.Forms.Application.OpenForms)
			{
				if (frm.Text == titleName)
				{
					IsOpen = true;
					frm.Focus();
					break;
				}
			}

			if (!IsOpen)
			{
				form.MdiParent = APPLICATION_CAFE_RESTAURANT.MainForm.ActiveForm;
				form.Text = titleName;
				form.Show();
			}
		}