Fetch image from database using handler

Hi Shilpi,


Try this...

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Save_and_Retrieve_Images._Default" %>





   


   

   

    
    
       
       

       
    
       
       

       

                    Text="Submit" />
  
                   
       
   

   

---

 
  
   

   

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
namespace Save_and_Retrieve_Images
{
    public partial class _Default : System.Web.UI.Page
    {
        string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

        protected void btnSubmit_Click(object sender, EventArgs e)
        {
            //SqlConnection con = null;
            SqlConnection con = new SqlConnection(strConnString);
            try
            {
                FileUpload img = (FileUpload)imgUpload;
                Byte[] imgByte = null;
                if (img.HasFile && img.PostedFile != null)
                {
                    //To create a PostedFile
                    HttpPostedFile File = imgUpload.PostedFile;
                    //Create byte Array with file len
                    imgByte = new Byte[File.ContentLength];
                    //force the control to load data in array
                    File.InputStream.Read(imgByte, 0, File.ContentLength);
                }
                // Insert the employee name and image into db
              
                con.Open();
                string sql = "INSERT INTO EmpDetails(empname,empimg) VALUES(@enm, @eimg) SELECT @@IDENTITY";
                SqlCommand cmd = new SqlCommand(sql, con);
                cmd.Parameters.AddWithValue("@enm", txtEName.Text.Trim());
                cmd.Parameters.AddWithValue("@eimg", imgByte);
                int id = Convert.ToInt32(cmd.ExecuteScalar());
                lblResult.Text = String.Format("Employee ID is {0}", id);
                Image1.ImageUrl = "~/ShowImage.ashx?id=" + id;
            }
            catch
            {
                lblResult.Text = "There was an error";
            }
            finally
            {
                con.Close();
            }
        }
    }
}




using System;
using System.Collections;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.Configuration;
using System.IO;
using System.Data.SqlClient;

namespace Save_and_Retrieve_Images
{
    ///

    /// Summary description for $codebehindclassname$
    ///

    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class ShowImage : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            //context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            Int32 empno;
            if (context.Request.QueryString["id"] != null)
                empno = Convert.ToInt32(context.Request.QueryString["id"]);
            else
                throw new ArgumentException("No parameter specified");

            context.Response.ContentType = "image/jpeg";
            Stream strm = ShowEmpImage(empno);
            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);
            }
            //context.Response.BinaryWrite(buffer);
        }
        public Stream ShowEmpImage(int empno)
        {
            string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            SqlConnection con = new SqlConnection(strConnString);
            string sql = "SELECT empimg FROM EmpDetails WHERE empid = @ID";
            SqlCommand cmd = new SqlCommand(sql, con);
            cmd.CommandType = CommandType.Text;
            cmd.Parameters.AddWithValue("@ID", empno);
            con.Open();
            object img = cmd.ExecuteScalar();
            try
            {
                return new MemoryStream((byte[])img);
            }
            catch
            {
                return null;
            }
            finally
            {
                con.Close();
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}




Thanks
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