ReportDataSource rds = new ReportDataSource("DataSetName", myDataList); report.DataSources.Add(rds); report.SetParameters(new ReportParameter[] { new ReportParameter("Title", "Monthly Report") }); Use code with caution.
While native RDLC support was originally limited to the .NET Framework, community-maintained packages like ReportViewerCore.NETCore now allow developers to use the same logic in .NET Core 3.1 and .NET 8/9 applications. Best Practices for Performance
Dynamically assign your dataset and any required parameters to the report object. dynamically create and download pdf from rdlc report
: Instantiating LocalReport directly is faster than using a hidden ReportViewer control.
To trigger an automatic download in an ASP.NET application, clear the response buffer and write the rendered bytes directly to the output stream. : Instantiating LocalReport directly is faster than using
The Render method is the critical step that converts the report definition and data into a specific format, such as PDF or Excel.
: You can pass XML configuration (DeviceInfo) to the Render method to customize page margins, height, or width specifically for the PDF output. Creating a PDF from a RDLC Report in the Background : You can pass XML configuration (DeviceInfo) to
Instead of using a visual control on a web form, you can instantiate a LocalReport in memory. This is common for background tasks or web-based downloads.