Microsoft Report Viewer May 2026

Install-Package Microsoft.ReportingServices.ReportViewerControl.WinForms

// Using Microsoft.Reporting.NETCore (community) or the official package byte[] RenderReport(string reportPath, DataSet data) microsoft report viewer

// 6. Refresh the report reportViewer1.RefreshReport(); Since there is no native .NET Core report viewer, you must use the WebForms control inside an ASP.NET Core project with the Microsoft.AspNetCore.SystemWebAdapters . This is an advanced scenario; for simpler web needs, consider rendering reports to PDF on the server and sending the PDF to the client. Install-Package Microsoft

// 3. Define the report path (relative to the executable) reportViewer1.LocalReport.ReportPath = "Reports\\SalesReport.rdlc"; for simpler web needs