How to Show Images In Grid View

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C#

ASP.NET

Hello All,
I am displaying images in tempalte field of grid view with the help of http handler.but the problem is that it will show the image of the last item in all the columns of the grid view.
http handler class is following where i pass item id with the help of query string:

using System;
using System.Configuration;
using System.Web;
using System.IO;
using System.Data;
using System.Data.SqlClient;

public class Handler : IHttpHandler {
    
    public void ProcessRequest (HttpContext context)
    {
        Int32 itemid;
        if (context.Request.QueryString["id"] != null)
            itemid = Convert.ToInt32(context.Request.QueryString["id"]);
        else
            throw new ArgumentException("No parameter specified");

        context.Response.ContentType = "image/jpeg";
        Stream strm = ShowEmpImage(itemid);
        if (strm == null)
        {
            return;
        }
        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 itemid)
    {
        string conn = ConfigurationManager.ConnectionStrings["cn"].ConnectionString;
        SqlConnection connection = new SqlConnection(conn);
        string sql = "SELECT item_image FROM TbItem WHERE item_id = @ID";
        SqlCommand cmd = new SqlCommand(sql, connection);
        cmd.CommandType = CommandType.Text;
        cmd.Parameters.AddWithValue("@ID", itemid);
        connection.Open();
        object img = cmd.ExecuteScalar();
        try
        {
            return new MemoryStream((byte[])img);
        }
        catch
        {
            return null;
        }
        finally
        {
            connection.Close();
        }
    }
    public bool IsReusable {
        get {
            return false;
        }
    }

}

I bind images at row data bound:

protected void gridhome_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        try
        {
            DataRowView r = e.Row.DataItem as DataRowView;
            if (e.Row.RowType == DataControlRowType.DataRow)
            {

                CheckBox chk;
                chk = (CheckBox)(e.Row.FindControl("CheckBox3"));
                int id = Convert.ToInt32(DrpCat.SelectedValue);
                DataSet ds = objitem.fill_grid_show_by_items(id);
                string check = ds.Tables[0].Rows[0][1].ToString();
                if (check == "Checked")
                {
                    chk.Checked = true;
                }
                Image img;
                img = (Image)(e.Row.FindControl("imgPrettyPic"));
               
               
                int itemid = Convert.ToInt32(ds.Tables[0].Rows[0][3]);
                img.ImageUrl = "~/Handler1.ashx?id=" + itemid;
                img.DataBind();

               
              
            }
        }
        catch (Exception ex)
        {
        }
    }

but the problem is that it will return the image of the last id
the row data bound will fire the http handler at the last