<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lbtnDownFile" runat="server" CommandName="DownFile" CommandArgument='<%# Eval("UFID") %>' >下载</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
protected void gdvwUpFile_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName== "DownFile")
{
int id = int.Parse(e.CommandArgument.ToString());
DataBase db = new DataBase();
string sqlDown = "select UFFileName from PTestUploadFiles where UFID=" + id+"";
DataTable dt= db.GetDataSet(sqlDown).Tables[0];
string fileName = dt.Rows[0][0].ToString();
string filePath = Server.MapPath("/UpFile/"+fileName);
FileStream fs = new FileStream(filePath, FileMode.Open);
byte[] bytes = new byte[(int)fs.Length];
fs.Read(bytes, 0, bytes.Length);
fs.Close();
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();
}
}