Problem using popup control extender!

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C#

ASP.NET

Hi All,

I am using a pop control extender to show a popup with extended details from a grid view. Now whenever i do mouseover on the select button of my grid, a message would popup, "Web service call failed:500".

I am not finding any solution for this problem, please help me!
Thanks in Advance!

Ahsan

My code is:

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using AjaxControlToolkit;
using System.Text;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            LoadData();
        }

    }
    private void LoadData()
    {
        string constr = "Server=Ahsan-PC;Database=SampleDatabase;INtegrated Security = true;";
        string query = "SELECT ProductID, ProductName FROM Products";

        SqlDataAdapter da = new SqlDataAdapter(query, constr);
        DataTable table = new DataTable();

        da.Fill(table);

        GridView1.DataSource = table;
        GridView1.DataBind();
    }
    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            PopupControlExtender pce = e.Row.FindControl("PopupControlExtender1") as PopupControlExtender;

            string behaviorID = "pce_" + e.Row.RowIndex;
            pce.BehaviorID = behaviorID;

            Image img = (Image)e.Row.FindControl("Image1");

            string OnMouseOverScript = string.Format("$find('{0}').showPopup();", behaviorID);
            string OnMouseOutScript = string.Format("$find('{0}').hidePopup();", behaviorID);

            img.Attributes.Add("onmouseover", OnMouseOverScript);
            img.Attributes.Add("onmouseout", OnMouseOutScript);
        }
    }
    [System.Web.Services.WebMethodAttribute(),
   System.Web.Script.Services.ScriptMethodAttribute()]
    public static string GetDynamicContent(string contextKey)
    {
        string constr = "Server=Ahsan-PC;Database=SampleDatabase;";

        string query = "SELECT UnitPrice, UnitsInStock, Description FROM Products WHERE ProductID = '"+contextKey+"'";

        SqlDataAdapter da = new SqlDataAdapter(query, constr);
        DataTable table = new DataTable();

        da.Fill(table);

        StringBuilder b = new StringBuilder();

        b.Append("<table style='background-color:#f3f3f3; border: #336699 3px solid; ");
        b.Append("width:350px; font-size:10pt; font-family:Verdana;' cellspacing='0' cellpadding='3'>");

        b.Append("<tr><td colspan='3' style='background-color:#336699; color:white;'>");
        b.Append("<b>Product Details</b>"); b.Append("</td></tr>");
        b.Append("<tr><td style='width:80px;'><b>Unit Price</b></td>");
        b.Append("<td style='width:80px;'><b>Stock</b></td>");
        b.Append("<td><b>Description</b></td></tr>");

        b.Append("<tr>");
        b.Append("<td>$" + table.Rows[0]["UnitPrice"].ToString() + "</td>");
        b.Append("<td>" + table.Rows[0]["UnitsInStock"].ToString() + "</td>");
        b.Append("<td>" + table.Rows[0]["Description"].ToString() + "</td>");
        b.Append("</tr>");

        b.Append("</table>");

        return b.ToString();
    }
}