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