private void toolStripButtonDesign_Click(object sender, EventArgs e) { if (treeViewReports.SelectedNode.Index != -1) { using (Stimulsoft.Report.StiReport report = new Stimulsoft.Report.StiReport()) { report.Load(ReportsPath + treeViewReports.SelectedNode.Text + ".mrt"); report.Dictionary.Databases.Clear(); report.RegData("Demo", "Demo", dataSetInvoice); report.Compile(); report.Design(true); } } else { MessageBox.Show("Select invoice first to proceed!"); } }