本文介绍如何在ASP.NET中使用GridView实现文件下载功能。通过示例代码展示了如何配置GridView与SqlDataSource，并利用a标签完成文件的下载操作。
gridview内实现文件下载
实现起来有点迷惑性，用了几种方法，最后用a实现。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" 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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
SelectCommand="SELECT * FROM [files]"></asp:SqlDataSource>
</div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="id" HeaderText="id" SortExpression="id" />
<asp:BoundField DataField="upload_file" HeaderText="upload_file"
SortExpression="upload_file" />
<asp:BoundField DataField="file_name" HeaderText="file_name"
ortExpression="file_name" />
<asp:TemplateField><ItemTemplate>
<a href='<%#DataBinder.Eval(Container.DataItem,"file_name")%>' target="_blank">下载</a>
</Itemtemplate></asp:TemplateField>
</Columns>
</asp:GridView>
</form>
</body>
</html>
实现起来有点迷惑性，用了几种方法，最后用a实现。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" 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>无标题页</title></head><body> <form id="form1" runat="server"> <div> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
SelectCommand="SELECT * FROM [files]"></asp:SqlDataSource> </div> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1">
<Columns> <asp:BoundField DataField="id" HeaderText="id" SortExpression="id" /> <asp:BoundField DataField="upload_file" HeaderText="upload_file" SortExpression="upload_file" />
<asp:BoundField DataField="file_name" HeaderText="file_name" ortExpression="file_name" />
<asp:TemplateField><ItemTemplate> <a href='<%#DataBinder.Eval(Container.DataItem,"file_name")%>' target="_blank">下载</a> </Itemtemplate></asp:TemplateField> </Columns> </asp:GridView> </form></body></html>
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