How to image insert in database and show in grid view

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ASP.NET

Good afternoon every one,

Sir I m fresher . I m trying to insert image in data base . so I copied that code but My image not show

This is Databse:-
-------------------------

colum Name   datatype
ImageId      Int(set identity property=true)

ImageName     Varchar(50)

Image         image

---------------------------
.cs Code:

protected void btnUpload_Click(object sender, EventArgs e)
{
   if (imageUpload.HasFile)
   {
      //getting length of uploaded file
      int length = imageUpload.PostedFile.ContentLength;
      //create a byte array to store the binary image data
      byte[] imgbyte = new byte[length];
      //store the currently selected file in memeory
      HttpPostedFile img = imageUpload.PostedFile;
      //set the binary data
      img.InputStream.Read(imgbyte, 0, length);
      string imagename = txtImageName.Text;
      SqlConnection con = new SqlConnection(strcon);
      SqlCommand cmd = new SqlCommand("insert into Table_1(u_id,user_name,email,image,image_name) values ('3','yawar','yawr@gmail.com','"+img +"','"+imagename+"')", con);
      cmd.Connection.Open();
      cmd.ExecuteNonQuery();
      cmd.Connection.Close();
   }
}

--------------------------------
grid view:-

</asp:TemplateField>

                 <asp:TemplateField HeaderText="Photo">

                 <ItemTemplate>
                 <asp:Image ID="Image1" runat="server" ImageUrl='<%# "ImageHandler.ashx?ImID="+ Eval("u_id")%>' Height="200px" Width="200px"/>
                 </ItemTemplate>

                </asp:TemplateField>

---------------------
<%@ WebHandler Language="C#" Class="ImageHandler" %>

using System;
using System.Web;
using System.Data.SqlClient;
using System.IO;
public class ImageHandler : IHttpHandler
{
   string strcon = "Server=UNIAYUR-PC\\YAWAR; User Id=sa; Password=uniayur123; Database=Gridview_data";
   public void ProcessRequest (HttpContext context)
   {
      string imageid = context.Request.QueryString["ImID"];
      SqlConnection con = new SqlConnection(strcon);
      con.Open();
      SqlCommand cmd = new SqlCommand(" Select image from Table_1 where u_id='" + imageid + "'", con);
      SqlDataReader dr = cmd.ExecuteReader();
      dr.Read();
      context.Response.BinaryWrite((Byte[])dr[0]);
      context.Response.End();
      con.Close();
   }
 
   public bool IsReusable
   {
      get
      {
         return false;
      }
   }
}