ASP.NET 文档下载及PDF预览（电脑得安装Adobe）

 protected void download_Click(object sender, EventArgs e)//文档下载

    {

        Database db = new Database();

        string Guidstr = Request.Form.Get("checkGuid");

        //Response.Write(Guidstr);

        if (Guidstr.Split(',').Length > 1)

        {

            Response.Write("<script type='text/javascript'>alert('下载时候不能选择多个文档一起下载，请重新选择！');</script>");

        }

        else if (Guidstr != "" && Guidstr != null && Guidstr.Split(',').Length == 1)

        {

            string sql = "select FileName,FileContent,FileSize from  tb_OldInput where Guidstr='" + Guidstr + "'";

            DataTable dt = db.GetTable(sql);

            if (dt.Rows.Count > 0)

            {

                Response.Clear();

                String strFileName = dt.Rows[0]["FileName"].ToString();

                int FileSize = int.Parse(dt.Rows[0]["FileSize"].ToString());

              

                Response.ContentType = "APPLICATION/OCTET-STREAM";

                Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName));

                Response.Buffer = true;

                Response.BinaryWrite((Byte[])dt.Rows[0]["FileContent"]);

                Response.Flush();

                Response.End();

            }

        }
    }

 protected void Look_Click(object sender, EventArgs e)//PDF文档查看

    {

        Database db = new Database();

        string Guidstr = Request.Form.Get("checkGuid");

        //Response.Write(Guidstr);

        if (Guidstr.Split(',').Length > 1)

        {

            Response.Write("<script type='text/javascript'>alert('查看时候不能选择多个文档一起查看，请重新选择！');</script>");

        }

        else if (Guidstr != "" && Guidstr != null && Guidstr.Split(',').Length == 1)

        {

            string sql = "select FileContent from  tb_OldInput where Guidstr='" + Guidstr + "'";

            DataTable dt = db.GetTable(sql);

            if (dt.Rows.Count > 0)

            {

                byte[] Files = (byte[])dt.Rows[0]["FileContent"];

                Response.ContentType = "application/pdf";

                Response.BinaryWrite(Files);

                Response.End();

            }

        }

    }