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  • ASP.net 文件下載

    用时候当系统文件关联直接下载的话会调用程序打开,或者想验证后才能给用户下载,那么可以用这个方法实现

     private void FileDown(string strPath)
        {
            System.IO.FileInfo file = new System.IO.FileInfo(strPath);
            if (file.Exists)
            {
                Response.Clear();
                Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(file.FullName, System.Text.Encoding.UTF8));
                Response.AddHeader("Content-Length", file.Length.ToString());
                Response.ContentType = "application/octet-stream";
                Response.Filter.Close();
                Response.WriteFile(file.FullName);
                Response.End();
            }
            else
            {
                ClientScript.RegisterStartupScript(GetType(), "", "<script language='javascript'>alert('文件不存在!');</script>");
            }
        }

    顺便发一下打GridView转成Excel让用户下载的代码

    private void DownExcel()
    {
            Response.ClearContent();
            Response.AddHeader("content-disposition", "attachment; filename=print.xls");
            Response.ContentType = "application/ms-excel";
            StringWriter sw = new StringWriter();
            HtmlTextWriter htw = new HtmlTextWriter(sw);
            GridView1.RenderControl(htw);
            Response.Write(sw.ToString());
            Response.End();
    }
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  • 原文地址:https://www.cnblogs.com/twttafku/p/1212609.html
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