如何在不进入预览的情况下将Telerik ReportViewer导出为PDF。VB.net webforms

Imports Telerik.Reporting
Imports Telerik.ReportViewer.WebForms

<telerik:ReportViewer ID="ReportViewer1" runat="server" Width="100%" Height="500px"></telerik:ReportViewer>

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    If Not IsPostBack Then
        LoadReport()
    End If
End Sub

Private Sub LoadReport()
    Dim report As New ReportDocument()
    report.Load(Server.MapPath("YourReport.trdx")) '替换为你的报表文件路径

    Dim reportSource As New Telerik.Reporting.InstanceReportSource()
    reportSource.ReportDocument = report

    ReportViewer1.ReportSource = reportSource
End Sub

Protected Sub ExportToPDF()
    Dim report As ReportDocument = ReportViewer1.ReportSource.ReportDocument
    Dim result As New System.IO.MemoryStream()

    Dim pdfExport As New Telerik.Reporting.Pdf.PdfExport()
    pdfExport.Export(report, result)

    Response.Clear()
    Response.ContentType = "application/pdf"
    Response.AddHeader("content-disposition", "attachment; filename=YourReport.pdf") '替换为你想要的PDF文件名
    Response.BinaryWrite(result.ToArray())
    Response.End()
End Sub

<asp:Button ID="btnExport" runat="server" Text="Export to PDF" OnClick="ExportToPDF" />