Microsoft Report Viewer Site

From the Toolbox, add a DataSet ( MyDataSet.xsd ). Define a DataTable (e.g., SalesData with columns Product , Quantity , Price ).

LocalReport report = new LocalReport(); report.ReportPath = reportPath; report.DataSources.Add(new ReportDataSource("DataSet1", data.Tables[0])); string mimeType, encoding, fileNameExtension; Warning[] warnings; string[] streams; microsoft report viewer

Open the RDLC file. Go to View → Report Data. Right-click DataSets → Add Dataset. Set the DataSource to MyDataSet and the available dataset to SalesData . From the Toolbox, add a DataSet ( MyDataSet

// 1. Fetch your data (could be from SQL, JSON, or CSV) DataTable dt = GetSalesDataFromDatabase(); From the Toolbox

// 5. (Optional) Set parameters var param = new ReportParameter("ReportTitle", "Q2 Sales"); reportViewer1.LocalReport.SetParameters(param);