Asp.net水晶报表（动态变化）

Question

hi all ! I am developing one asp.net application and the requirement is as below. user can view multiple reports(i have used crystal reports). Each report has edit report button.when the user click on edit button,then report will be open in excel sheet on different webpage.then user make suitable changes like sorting etc and save this report and take an updated print.

Answer 1

• Drag & drop many CristalReportsViewer in the page, one for each report you want to show
• Drag & drop many CristalReportsSource in the page, one for each report you want to show
• link each CristalReportsSource to a CristalReportsViewer
• set for each CristalReportsSource the relative source myreport.rpt

• put many buttons that export the reports, using this sample code

   protected void btnExport_Click(object sender, EventArgs e) { // Stop buffering the response Response.Buffer = false; // Clear the response content and headers Response.ClearContent(); Response.ClearHeaders(); ExportFormatType format = ExportFormatType.Excel; try { reportDocument.ExportToHttpResponse(format, Response, true, "report.xls"); } catch (System.Threading.ThreadAbortException) { //happens; no matter } catch (Exception ex) { Response.Write(ex.StackTrace); } } 

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You can show a single report, and allow users choosing the desired report unsing a dropdown with this sample code

    reportDocument = new ReportDocument();
    string reportName = "myreport.rpt";
    reportDocument.Load(Server.MapPath(string.Format("~/{0}/{1}", "MyReportsFolder", reportName)));
    CrystalReportViewer1.ReportSource = reportDocument;
    reportDocument.ReadRecords();