Return attachment through ajax

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I call MyHandler from the client through ajax using mootoools
In Myhandler, I send some data back, that should be exported to excel in client.
The code in ProcessRequest in the MyHandler is following:
Response.Clear();
Response.AddHeader("content-disposition", "attachment;filename=FileName.xls");
Response.ContentType = "application/vnd.xls";

Response.Write("FirstName");
Response.Write(Environment.Newline);
Response.Write("Igor")"
Response.End();

When the response is returned to the client, no dialog is shown for asking to save the file. The server returns just xml. How to do that when the response is returned to client, the dialog will be shown and ask to save the attachment?

Thanks

Posted 5-Oct-10 7:27am

TheAteist

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William Jordan · Answer 1 · 2010-10-05T07:57:00

I don't know about doing this via ajax, but you can do this easily with a hidden iframe on your page:

page1.aspx:

XML

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        function test() {
            document.getElementById("ifr").src = "page2.aspx";
        }
    </script>
</head>
<body >
    <form id="form1" runat="server">
    <asp:Button ID="doit" runat="server" OnClientClick="test(); return false;" />
    <iframe id="ifr" style="display:none" />
    </form>
</body>
</html>

Page2.aspx:

XML

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Page2.aspx.vb" Inherits="Page2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    </div>
    </form>
</body>
</html>

page2.aspx.vb:

VB

Partial Class Page2
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Response.Clear()
        Response.AddHeader("content-disposition", "attachment;filename=FileName.xls")
        Response.ContentType = "application/vnd.xls"
        Response.Write("FirstName")
        Response.Write(Environment.NewLine)
        Response.Write("Igor")
        Response.End()
    End Sub
End Class