The Image is access from sql database & show the slideshow using slideshowextender of ajax

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ASP.NET

Sir,
I have used following code,but I have occurred an error like "source code not available" & also "-- C:\Users\Stephen\Documents\Repos\Superexpert\AjaxControlToolkit\Server\AjaxControlToolkit\ExtenderBase\ExtenderControlBase.cs " this error.

The code as follow.

Page source code..

</p>
        <asp:Image ID="Image1" runat="server" Height="107px"    Width="133px" />
         <asp:ScriptManager ID="ScriptManager" runat="server">
        </asp:ScriptManager>
         <asp:Image ID="Image2" runat="server" Height="122px"   Width="127px" />
         <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
         <br />
    <asp:Button runat="Server" ID="prevButton" Text="Prev" Font-Size="Medium" />
<asp:Button runat="Server" ID="playButton" Text="Play" Font-Size="Medium" />
<asp:Button runat="Server" ID="nextButton" Text="Next" Font-Size="Medium" />
   <asp:SlideShowExtender ID="Slideshowextender" runat="server" PreviousButtonID="Button1"
    NextButtonID="Button3" PlayButtonID="Button2" TargetControlID="Image1"
    SlideShowServiceMethod="GetImage "   PlayInterval="5000" PlayButtonText="Play"
        StopButtonText="Stop" UseContextKey="True"></asp:SlideShowExtender>

    <br />
</p>

*** .cs code****

 private static DataTable tblData = new DataTable();
    protected void Page_Load(object sender, EventArgs e)
    {
        SqlConnection conn = new SqlConnection("Data Source=.;Initial Catalog=Nildemo;User ID=sa;Password=2008");
        conn.Open();
        SqlCommand cmd = new SqlCommand("SELECT ID,ImageName,Image FROM Pic", conn);
        SqlDataAdapter adapter = new SqlDataAdapter(cmd);
        tblData = new DataTable();
        adapter.Fill(tblData);
        Slideshowextender.SlideShowServiceMethod = "Handler.ashx?ID =" + Request.QueryString["ID"];

        if (tblData.Rows.Count > 0)
        {
            Image1.ImageUrl = tblData.Rows[0]["Image"].ToString();
      
        }
}

[System.Web.Services.WebMethod]
   [System.Web.Script.Services.ScriptMethod]
   public static AjaxControlToolkit.Slide[] GetImage()
   {
       AjaxControlToolkit.Slide[] slides = new AjaxControlToolkit.Slide[tblData.Rows.Count];
       for (int i = 0; i < tblData.Rows.Count; i++)
       {
           DataRow dr = tblData.Rows[i];
           slides[i] = new AjaxControlToolkit.Slide();
       }
       return slides;

   }

**** use handalar *****

<%@ WebHandler Language="C#" Class="Handler" %>

using System;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.IO;
using System.Collections.Specialized;

public class Handler : IHttpHandler {
public void ProcessRequest(HttpContext context)
{
    string id = context.Request.QueryString["ID"]; //get the querystring value that was pass on the ImageURL
    if (id != null)
    {

        MemoryStream memoryStream = new MemoryStream();
        SqlConnection conn = new SqlConnection("Data Source=KSCPL-PC;Initial Catalog=Nildemo;User ID=sa;Password=2008");
        string sql = "SELECT * FROM Pic WHERE ID = @ID";

        SqlCommand cmd = new SqlCommand(sql, conn);
        cmd.Parameters.AddWithValue("@ID", id);
        conn.Open();

        SqlDataReader reader = cmd.ExecuteReader();
        reader.Read();

        //Get Image Data
        byte[] file = (byte[])reader["Image"];

        reader.Close();
        conn.Close();
        memoryStream.Write(file, 0, file.Length);
        context.Response.Buffer = true;
        context.Response.BinaryWrite(file);
        memoryStream.Dispose();

    }
}

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