protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
//这里是模板列里面的按钮，需要设置CommandArgument ="<%# GridView1.Rows.Count %>"，否则出错
if (e.CommandName == "Download")
{
FileDownload(@"F:\music\6-渴望.mp3");
}
}
private void FileDownload(string FullFileName)
{
FileInfo DownloadFile = new FileInfo(FullFileName);
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.Buffer = false;
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.UTF8));
Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());
Response.AddHeader("Content-Transfer-Encoding", "binary");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
Response.WriteFile(DownloadFile.FullName);
Response.Flush();
Response.End();
}
注意：
如果是在GridView在UpdatePanel下，就需要加入如下代码：
<Triggers>
<asp:PostBackTrigger ControlID="GridView1" />
</Triggers>
否则会报错
