Application supplies data (e.g., DataSets, Lists, Linq queries). SSRS server connects directly to databases or APIs. No SQL Server Reporting Services instance required. Requires a licensed SQL Server Reporting Services instance. Best For Standalone apps, offline reporting, desktop software.
private void Form1_Load(object sender, EventArgs e) // 1. Clear existing sources reportViewer1.LocalReport.DataSources.Clear(); // 2. Set processing mode to Local reportViewer1.ProcessingMode = ProcessingMode.Local; // 3. Specify the path to your RDLC file reportViewer1.LocalReport.ReportPath = "Reports/ProductReport.rdlc"; // 4. Fetch your custom data list List salesData = FetchSalesFromDatabase(); // 5. Create and bind the ReportDataSource ReportDataSource rds = new ReportDataSource("DataSet1", salesData); reportViewer1.LocalReport.DataSources.Add(rds); // 6. Refresh and render the report reportViewer1.RefreshReport(); Use code with caution. 5. Troubleshooting Common Deployment Issues
Are you building a (WinForms/WPF) or a web application ?
For development, the story is equally challenging. . The official NuGet packages for WinForms target .NET Framework 4.x and are not compatible with modern .NET 8/9 projects. Attempting to use them will lead to errors and unpredictable behavior . microsoft report viewer
// Setting report parameters programmatically this.reportViewer1.LocalReport.SetParameters(new ReportParameter("Year", "2025")); this.reportViewer1.RefreshReport();
In the Report Data window, add a . Define the columns your report will display (e.g., ProductID , ProductName , TotalSales ).
byte[] renderedBytes = report.Render( "PDF", "<DeviceInfo><OutputFormat>PDF</OutputFormat></DeviceInfo>", out mimeType, out encoding, out fileNameExtension, out streams, out warnings ); return renderedBytes; Application supplies data (e
// 5. (Optional) Set parameters var param = new ReportParameter("ReportTitle", "Q2 Sales"); reportViewer1.LocalReport.SetParameters(param);
// 3. Define the report path (relative to the executable) reportViewer1.LocalReport.ReportPath = "Reports\\SalesReport.rdlc";
This article explores what the Microsoft Report Viewer is, how it works, the critical differences between its versions, and how to implement it effectively in modern development environments. Requires a licensed SQL Server Reporting Services instance
The Ultimate Guide to Microsoft Report Viewer: Deployment, Integration, and Modern Alternatives
The definitive version for applications targeting .NET Framework 4.6.1 through 4.8.x. It features full support for SQL Server 2019 and 2022 report features. The .NET Core / .NET 6+ Gap