将Crystal报表转换为PDF或Microsoft Excel

Question

我在ASP.NET网站上有一个水晶报表，该报表已成功显示，但无法导出到Microsoft Access。 客户端的操作系统是Windows 8 32位。 这是显示的错误：

我非常感谢任何建议。 提前致谢。

Answer 1

首先，您需要添加单选按钮，如下所示：

      <tr>
          <td>
          </td>
          <td>
          <asp:RadioButtonList ID="rblFormat" runat="server" RepeatDirection="Horizontal" CssClass="Profiletitletxt">
          <asp:ListItem Text="PDF" Value="1" Selected="True"></asp:ListItem>
          <asp:ListItem Text="MS Word" Value="2"></asp:ListItem>
          <asp:ListItem Text="MS Excel" Value="3"></asp:ListItem>
          </asp:RadioButtonList>

          </td>
          <td>
          </td>
          </tr>

在绑定报告中的代码中添加：

           If rblFormat.SelectedValue = 1 Then
                cryRpt.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, True, "ExportedReport")
            ElseIf rblFormat.SelectedValue = 2 Then
                cryRpt.ExportToHttpResponse(ExportFormatType.WordForWindows, Response, True, "ExportedReport")
            ElseIf rblFormat.SelectedValue = 3 Then
            ExportDataSetToExcel(DT, "ExportedReport")
            End If

对于Excel，添加：

        Public Shared Sub ExportDataSetToExcel(ByVal ds As DataTable, ByVal filename As String)
        Dim response As HttpResponse = HttpContext.Current.Response
        response.Clear()
        response.Buffer = True
        response.Charset = ""
        response.ContentType = "application/vnd.ms-excel"
            Using sw As New StringWriter()
            Using htw As New HtmlTextWriter(sw)
                Dim dg As New DataGrid()
                dg.DataSource = ds
                dg.DataBind()
                dg.RenderControl(htw)
                response.Charset = "UTF-8"
                response.ContentEncoding = System.Text.Encoding.UTF8
                response.BinaryWrite(System.Text.Encoding.UTF8.GetPreamble())
                response.Output.Write(sw.ToString())
                response.[End]()
            End Using
        End Using
    End Sub