LocalReport Class
Assembly: Microsoft.ReportViewer.WinForms (in microsoft.reportviewer.winforms.dll)
The LocalReport class represents reports that are processed and rendered locally without connecting to a report server. This class is the same object that is used by the ReportViewer control, but it also can be used independently as a nonvisual object that encapsulates the core functionality of the ReportViewer control.
The LocalReport object can open client report definition (RDLC) files from the file system, or the RDLC file can be supplied to it as a Stream or a TextReader.
The LocalReport object does not have the ability to execute queries or fetch data; instead, data must be supplied to it as instances of ADO.NET DataTables or as a collection of business objects.
The LocalReport object supports report parameters, but does not support query parameters.
In the following code example, a LocalReport object is used to load and export a report.
private void button1_Click(object sender, EventArgs e) { Microsoft.Reporting.WinForms.LocalReport lr = new Microsoft.Reporting.WinForms.LocalReport(); string deviceInfo = "<DeviceInfo>" + "<SimplePageHeaders>True</SimplePageHeaders>" + "</DeviceInfo>"; lr.ReportPath = @"C:\My Reports\Monthly Sales.rdlc"; lr.DataSources.Add(new ReportDataSource("Sales", GetSalesData())); byte[] bytes = lr.Render("Excel", deviceInfo, out mimeType, out encoding, out streamids, out warnings); using (FileStream fs = = new FileStream(@"c:\My Reports\Monthly Sales.xls", FileMode.Create)) { fs.Write(bytes, 0, bytes.Length); fs.Close(); } }
