如何将本地报告导出为 pdf 和 excel 文件？

Question

我有两个网页，page1.aspx 和 page2.aspx。在page1中，有一个按钮；在第 2 页中，有一个本地报告 (rdlc)。当我点击按钮时，它会弹出 page2，并将报告导出为 pdf 和 excel 文件。如果报表是水晶报表，在page2的page_load中，我可以调用函数ExportToDisk(ExportFormatType, FileName)将报表导出为pdf/excel。但是现在我使用的是本地报告（rdlc），我想知道如何将其导出为 pdf/excel。

Answer 1

http://weblogs.asp.net/rajbk/archive/2006/03/02/How-to-render-client-report-definition-files-_28002E00_rdlc_2900_-directly-to-the-Response-stream-without-preview.aspx

/// <summary>
/// References:
/// </summary>
private void RenderReport() {
    LocalReport localReport = new LocalReport();
    localReport.ReportPath = Server.MapPath("~/Report.rdlc"); 

    //A method that returns a collection for our report
    //Note: A report can have multiple data sources
    List<Employee> employeeCollection = GetData();

    //Give the collection a name (EmployeeCollection) so that we can reference it in our report designer
    ReportDataSource reportDataSource = new ReportDataSource("EmployeeCollection", employeeCollection);
    localReport.DataSources.Add(reportDataSource);

    string reportType = "PDF";
    string mimeType;
    string encoding;
    string fileNameExtension;

    //The DeviceInfo settings should be changed based on the reportType
    //http://msdn2.microsoft.com/en-us/library/ms155397.aspx
    string deviceInfo =
    "<DeviceInfo>" +
    "  <OutputFormat>PDF</OutputFormat>" +
    "  <PageWidth>8.5in</PageWidth>" +
    "  <PageHeight>11in</PageHeight>" +
    "  <MarginTop>0.5in</MarginTop>" +
    "  <MarginLeft>1in</MarginLeft>" +
    "  <MarginRight>1in</MarginRight>" +
    "  <MarginBottom>0.5in</MarginBottom>" +
    "</DeviceInfo>";

    Warning[] warnings;
    string[] streams;
    byte[] renderedBytes;

    //Render the report
    renderedBytes = localReport.Render(
        reportType,
        deviceInfo,
        out mimeType,
        out encoding,
        out fileNameExtension,
        out streams,
        out warnings);

    //Clear the response stream and write the bytes to the outputstream
    //Set content-disposition to "attachment" so that user is prompted to take an action
    //on the file (open or save)
    Response.Clear();
    Response.ContentType = mimeType;
    Response.AddHeader("content-disposition", "attachment; filename=foo." + fileNameExtension);
    Response.BinaryWrite(renderedBytes);
    Response.End();

}