asp.net模态窗口下载文件解决方案

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http://blog.163.com/red_guitar@126/blog/static/117206128201123845276/

思路，在模态窗口页面放一个影藏的iframe。
首先，我们新建一个模态窗口，在模态窗口a.aspx

Java代码

<!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">
<base target="_self"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<center>
<asp:LinkButton ID="ibDownLoad" runat="server" onclick="ibDownLoad_Click">点击这里下载文件</asp:LinkButton>
</center>
<iframe id="download" runat="server" style="display:none;"></iframe>
</form>
</body>
</html>

<!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">      <base target="_self"/>      <title></title>  </head>  <body>      <form ></iframe>      </form>  </body>  </html>

后台代码：

Java代码

protected void ibDownLoad_Click(object sender, EventArgs e)
{
string filePath = Server.MapPath("\\PDF\\a.txt");
download.Attributes["src"] = "DownLoad.aspx?filePath=" + filePath;
}

protected void ibDownLoad_Click(object sender, EventArgs e)          {              string filePath = Server.MapPath("\\PDF\\a.txt");              download.Attributes["src"] = "DownLoad.aspx?filePath=" + filePath;           }

处理文件下载页面DownLoad.aspx，页面代码不写，在后台代码写：

Java代码

protected void Page_Load(object sender, EventArgs e)
{
string filePath = Request.QueryString["filePath"];
//string filePath = Server.MapPath("\\PDF\\a.txt");
if (File.Exists(filePath))
{
FileInfo file = new FileInfo(filePath);
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码
Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name)); //解决中文文件名乱码
// Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
Response.AddHeader("Content-length", file.Length.ToString());
Response.ContentType = "appliction/octet-stream";
Response.WriteFile(file.FullName);
Response.End();
}
}

protected void Page_Load(object sender, EventArgs e)          {              string filePath = Request.QueryString["filePath"];              //string filePath = Server.MapPath("\\PDF\\a.txt");              if (File.Exists(filePath))              {                  FileInfo file = new FileInfo(filePath);                  Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码                  Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name)); //解决中文文件名乱码                 // Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);                  Response.AddHeader("Content-length", file.Length.ToString());                  Response.ContentType = "appliction/octet-stream";                  Response.WriteFile(file.FullName);                  Response.End();              }          }

OK,完成，这样可以解决模态窗口点击下载链接没反应，或者弹出提示等等一些问题。

转自：http://269181927.javaeye.com/blog/865034