如何从服务器下载文件 [英] How to download a file from server

问题描述

亲爱的朋友，
我在服务器中有一个Excel文件.而且我有一个Web表单中的按钮.当用户单击该按钮时，它将把该excel文件下载到客户端计算机.

我迫切需要该代码.

我正在使用以下代码

Dear Friends,
I have a excel file in server. And i have a button in a web form. When user clicks that button it will download that excel file to client machine.

I need that code urgently.

I am using this below code

Response.ContentType = "image/jpeg";
        Response.AppendHeader("Content-Disposition", "attachment; filename=Image.xml");
        Response.TransmitFile(Server.MapPath("XML/Image.xml"));
        Response.End();

它工作正常，但是当我将其保留在更新面板中时无法正常工作.有任何建议.

It is working fine but when i keeping it within Update Panel not working. Any suggestion.

推荐答案

<div>
      <asp:ScriptManager ID="ScriptManager1" runat="server" >
      </asp:ScriptManager>
      <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
     <ContentTemplate>
      <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
      </ContentTemplate>
      <Triggers>
      <asp:PostBackTrigger  ControlID="Button1"  />
      </Triggers>

       </asp:UpdatePanel>
  </div>

在按钮单击事件上尝试以下操作:

try this on the button click event:

Dim dlScript As String = String.Format("window.open('{0}');", "/XML/image.xml")
            ScriptManager.RegisterStartupScript(Page, GetType(String), "fileDownloadScript", dlScript, True)

它应该可以工作...它使用ScriptManager来注册脚本以显示下载对话框

it should work...it uses ScriptManager to register script to show the download dialog

感谢kamalakanta nayak，
我根据您的建议使用了Trigger

Thanks kamalakanta nayak,
I used your suggestion for using Trigger

<Triggers>
      <asp:PostBackTrigger  ControlID="Button1"  />
      </Triggers>

而且效果很好..

and it works fine..

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