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RadToolBar with Download file

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ToolBar

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Lei asked on 06 May 2008, 04:27 PM

I'm using RadToolBar to create some RadToolBarButtons for user to download file from the file system. For example, one button for user to download Excel version user guide and the other version for user to donwload PDF version user guide. The program work fine under IE, but the program can not be run under Firefox. When the user using Firefox to access such webpage, first time he/she clicked RadToolBarButton to download PDF version user guide, after that, the entire became non-functional. No any effect after the Excel button is clicked.
My project is quite simple and contains one webform only. Here is my code
--------------- Default.aspx ------------------------------------

<%@ Page Language="VB" AutoEventWireup="true" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<%@ Register Assembly="Telerik.Web.UI, Version=2008.1.415.20, Culture=neutral, PublicKeyToken=121fae78165ba3d4"
Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <div>
            <telerik:RadToolBar ID="RadToolBar1" runat="server">
                <CollapseAnimation Duration="200" Type="OutQuint" />
                <Items>
                    <telerik:RadToolBarButton runat="server" Text="Download Excel" Value="DOWNLOADEXCEL">
                    </telerik:RadToolBarButton>
                    <telerik:RadToolBarButton runat="server" Text="Download PDF" Value="DOWNLOADPDF">
                    </telerik:RadToolBarButton>
                </Items>
            </telerik:RadToolBar>
        </div>
    </form>
</body>
</html>
------------------------------------------------------------------------
---------------Default.aspx.vb--------------------------------------------

Partial Class _Default
Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

End Sub

    Protected Sub RadToolBar1_ButtonClick(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadToolBarEventArgs) Handles RadToolBar1.ButtonClick
        If e.Item.Value = "DOWNLOADEXCEL" Then
            Dim file As System.IO.FileInfo = New System.IO.FileInfo("C:\Test.jpg")
            Response.Clear()
            Response.AddHeader("Content-Disposition", "attachment; filename=" & file.Name)
            Response.AddHeader("Content-Length", file.Length.ToString())
            Response.ContentType = "application/octet-stream"
            Response.WriteFile(file.FullName)
            Response.End() 'if file does not exist
        Else
            Dim file As System.IO.FileInfo = New System.IO.FileInfo("C:\Test.png")
            Response.Clear()
            Response.AddHeader("Content-Disposition", "attachment; filename=" & file.Name)
            Response.AddHeader("Content-Length", file.Length.ToString())
            Response.ContentType = "application/octet-stream"
            Response.WriteFile(file.FullName)
            Response.End() 'if file does not exist
        End If
    End Sub
End Class
------------------------------------------------------------------------
Please help me how to solve this problem.

Thanks & Regards,
Louis

7 Answers, 1 is accepted

answered on 09 May 2008, 04:15 PM

WebApplication1.zip

Hello Lei,

This is a well known problem to us and we are currently working on it. Hopefully, the fix will be included in the official Service Pack of the RadControls for ASP.NET Ajax suite, scheduled for about the mid of the next week.

For now, I suggest you use the following workaround: put the 'file emitting' code and only it in the Page_Load method of a new page; whenever you would like to emit the file to the user you should redirect to this new page on the client.

I have attached a simple project to illustrate the approach I described above.

All the best,
Simon
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

answered on 11 Jun 2008, 07:31 AM

Telerik.Web.UI_2008_1_606_trial_hotfix.zip

Hello Lei,

We managed to fix the problem but after the official Service Pack release.

I have attached our latest internal build to this post for your convenience.

Please download it and try it out.

Kind regards,
Simon
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center