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sagar Bhosale
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179
175.2k
Problem - how to display multiple image using ashx handler
May 20 2012 7:07 AM
<%@ WebHandler Language="C#" Class="ShowImage" %>
using System;
using System.Configuration;
using System.Web;
using System.IO;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Drawing.Imaging;
public class ShowImage : IHttpHandler
{
public void ProcessRequest (HttpContext context)
{
Int64 Sys_MTrxn_ID;
if (context.Request.QueryString["id"] != null)
Sys_MTrxn_ID = Convert.ToInt64(context.Request.QueryString["id"]);
else
throw new ArgumentException("No parameter specified");
context.Response.ContentType = "image/jpeg";
Stream strm = ShowEmpImage(Sys_MTrxn_ID);
byte[] buffer = new byte[4096];
int byteSeq = strm.Read(buffer, 0, 4096);
while (byteSeq > 0)
{
context.Response.OutputStream.Write(buffer, 0, byteSeq);
byteSeq = strm.Read(buffer, 0, 4096);
}
}
public Stream ShowEmpImage(Int64 Sys_MTrxn_ID)
{
DBHelper objDBHelper = new DBHelper();
//string conn = ConfigurationManager.ConnectionStrings["MFBackOfficeConnectionString"].ConnectionString;
string conn = objDBHelper.GetConnectionString();
DataTable dt = new DataTable();
SqlConnection connection = new SqlConnection(conn);
//string sql = "SELECT Transaction_Image FROM t_manualtransaction WHERE Sys_MTrxn_ID = (select Sys_MTrxn_ID from t_manualtransaction where Sys_MTrxn_ID = " + Sys_MTrxn_ID.ToString() + ")";
string sql = "SELECT Transaction_Image FROM T_ManualTrxnImages WHERE Sys_MTrxn_ID = (select Sys_MTrxn_ID from t_manualtransaction where Sys_MTrxn_ID = " + Sys_MTrxn_ID.ToString() + ")";
//SqlCommand cmd = new SqlCommand(sql, connection);
//cmd.CommandType = CommandType.Text;
SqlDataAdapter adpt = new SqlDataAdapter(sql, conn);
adpt.Fill(dt);
int ImgCnt = dt.Rows.Count;
connection.Open();
byte[] img = new byte[4096];
for (int i = 0; i< dt.Rows.Count; i++)
{
byte[] storedImage = (byte[])dt.Rows[0]["Transaction_Image"];
Image newImage;
MemoryStream stream = new MemoryStream(storedImage);
newImage = Image.FromStream(stream);
}
//object img = cmd.ExecuteScalar();
//try
//{
// return new MemoryStream((byte[])img);
//}
//catch
//{
// return new MemoryStream();
//}
return new MemoryStream((byte[])img);
connection.Close();
}
public bool IsReusable
{
get
{
return false;
}
}
}
--------------
plz help me this my code
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Improve the Web Application Performance When Application is in Production
EXE and a DLL