reportViewer1.LocalReport.ReportPath = "Reports/EmployeeList.rdlc"; reportViewer1.LocalReport.DataSources.Clear(); reportViewer1.LocalReport.DataSources.Add(dataSource); reportViewer1.RefreshReport(); Click the Export icon in the toolbar (floppy disk icon) to save as PDF or Excel. Common Programming Scenarios and Code Snippets 1. Passing Parameters to a Local Report ReportParameter param = new ReportParameter("ReportYear", "2024"); reportViewer1.LocalReport.SetParameters(new[] param ); 2. Subreports in Local Mode Add a Subreport item in the RDLC designer, then handle the SubreportProcessing event:
e.DataSources.Add(new ReportDataSource("OrderDataset", GetOrders(e.Parameters["CustomerID"].Values[0]))); ; byte[] bytes = reportViewer.LocalReport.Render("PDF"); File.WriteAllBytes("report.pdf", bytes); 4. Embedding Images from Database reportViewer1.LocalReport.EnableExternalImages = true; // In report expression: ="data:image/png;base64," + Convert.ToBase64String(Field!ImageBytes.Value) Troubleshooting Microsoft Report Viewer Even experienced developers encounter frustrating issues. Here are the top 10 problems and solutions: microsoft report viewer
The Microsoft Report Viewer is a control that hosts reports locally within Windows Forms, WPF, or ASP.NET Web Forms applications. Unlike SQL Server Reporting Services (SSRS), which requires a dedicated server, the Report Viewer processes reports on the client or web server, eliminating the need for a separate reporting infrastructure. reportViewer1