Microsoft Report Viewer Jun 2026

Use code with caution. 3. .NET Core / .NET 6+ Compatibility Issues

Add a new item to your project and select or Report Wizard to create a .rdlc (Report Definition Language Client-side) file. microsoft report viewer

Built-in parameter prompts allow users to filter data dynamically before running the report. Use code with caution

Microsoft Report Viewer operates in two distinct processing modes, giving developers flexibility depending on their infrastructure and database availability. 1. Local Processing Mode (RDLC) Built-in parameter prompts allow users to filter data

In the Report Data window, add a . Define the columns your report will display (e.g., ProductID , ProductName , TotalSales ).

All future updates and fixes are delivered via NuGet packages . You should no longer rely on a pre-installed runtime on client machines; instead, bundle the assemblies with your application.

[HttpGet("export/pdf")] public IActionResult ExportReportToPdf() LocalReport report = new LocalReport(); report.ReportPath = "Reports/SalesReport.rdlc"; report.DataSources.Add(new ReportDataSource("DataSet1", FetchSalesData())); // Render report directly to a byte array string mimeType = ""; string encoding = ""; string filenameExtension = ""; string[] streams; Warning[] warnings; byte[] renderedBytes = report.Render( "PDF", null, out mimeType, out encoding, out filenameExtension, out streams, out warnings ); return File(renderedBytes, mimeType, "sales_report.pdf"); Use code with caution. Strategy B: Third-Party & Community Wrappers