private void importCaseFromEmailToolStripMenuItem_Click(object sender, EventArgs e) { CloseAllChildForm(); DailyCaseImportorFromEmail dailyCaseImportorFromEmail = new DailyCaseImportorFromEmail(); dailyCaseImportorFromEmail.WindowState = FormWindowState.Maximized; dailyCaseImportorFromEmail.MdiParent = this; dailyCaseImportorFromEmail.MaximizeBox = false; dailyCaseImportorFromEmail.MinimizeBox = false; dailyCaseImportorFromEmail.Show(); }