User238037111 posted
Hello
I am using following code, it works perfectly. But If I try to implement with AJAX, it gives me following error. Any Idea how to implement with Ajax?
--- Error
A Runtime Error has occurred
Do you wish to Debug?
Line 5 Error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server couldnot be parsed. Common Cause for this error are when the response modified by calls to Response.Write(), response.filters, HttpModules, or server
trace is enabled.
----------------------------------------- Code
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Drawing;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Data.OracleClient;
using System.Configuration;
using System.Collections;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class GridviewwithFiltering : System.Web.UI.Page
{
protected Label lblVariable;
protected override void OnLoad(EventArgs e)
{
}
}
protected void Button2_Click(object sender, EventArgs e)
{
string connstr = read from web.config ;
OracleConnection conn = new OracleConnection(connstr);
conn.Open();
OracleDataAdapter sdPdfSource = new OracleDataAdapter();
ImageButton btn = (ImageButton)sender;
string pdfFilename = btn.CommandArgument;
sdPdfSource.SelectCommand = new OracleCommand("SELECT * FROM table where attachment_name='" + pdfFilename + "'", conn);
DataSet dsPdf = new DataSet();
sdPdfSource.Fill(dsPdf);
string strfn = Convert.ToString(DateTime.Now.ToFileTime());
strfn = dsPdf.Tables[0].Rows[0]["Attachment_Name"].ToString();
FileStream fs = new FileStream(strfn, FileMode.CreateNew, FileAccess.Write);
//retrieving binary data of pdf from dataset to byte array
byte[] blob = (byte[])dsPdf.Tables[0].Rows[0]["Content"];
HttpContext.Current.Response.ContentType = "application/pdf";
HttpContext.Current.Response.AddHeader("content-disposition", "Attachment; filename=" + pdfFilename);
HttpContext.Current.Response.AddHeader("content-length", blob.Length.ToString());
HttpContext.Current.Response.BinaryWrite(blob);
HttpContext.Current.Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest(); //instead of Response.End()
HttpContext.Current.Response.End();
}
}
