ASP.NET

<connectionStrings>
        <add name="conn" connectionString="Data Source=.;Initial Catalog=Tranning;Integrated Security=True" providerName="System.Data.SqlClient"/>
        <add name="tempdbConn" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\tempdb.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/>
    </connectionStrings>

[System.Web.Script.Services.ScriptMethod()]
        [System.Web.Services.WebMethod]
        public static List<string> SearchCustomers(string prefixText, int count)
        {
            using (SqlConnection conn = new SqlConnection())
            {
                conn.ConnectionString = ConfigurationManager
                        .ConnectionStrings["conn"].ConnectionString;
                using (SqlCommand cmd = new SqlCommand())
                {
                    //cmd.CommandText = "select ContactName from Customers where " +
                    //"ContactName like @SearchText + '%'";
                    cmd.CommandText = "select No_Trainee from Annual_Plan where No_Trainee like @SearchText + '%' ";
                    cmd.Parameters.AddWithValue("@SearchText", prefixText);
                    cmd.Connection = conn;
                    conn.Open();
                    List<string> customers = new List<string>();
                    using (SqlDataReader sdr = cmd.ExecuteReader())
                    {
                        while (sdr.Read())
                        {
                            customers.Add(sdr["No_Trainee"].ToString());
                        }
                    }
                    conn.Close();
                    return customers;
                }
            }
        }

<object type="application/x-shockwave-flash" data="videos/player_flv_mini.swf" width="426" height="240">
    <param name="movie" value="videos/player_flv_mini.swf" />
    <param name="allowFullScreen" value="true" />
    <param name="sharedSecret" />
         <param name="FlashVars" enableviewstate="false"  value="flv=videos/conversation/intro.flv&amp;autoplay=1&amp;width=426&amp;height=240&amp;playercolor=5f9906&amp;loadingcolor=ff5c29&amp;buttoncolor=fcfcfa&amp;slidercolor=fcfcfa" />
</object>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Instruction : System.Web.UI.Page
{

    OnlineExamsDataContext _mycontext = new OnlineExamsDataContext();
    string username;

    protected void Page_Load(object sender, EventArgs e)
    {
        username = Request.QueryString["username"].ToString();
        lbluname.Text = "Welcome   :" + username;
        lbldate.Text = System.DateTime.Now.ToString();


    }
    protected void btnstart_Click(object sender, EventArgs e)
    {
        int emailid;
        emailid = _mycontext.ExamTableInsert (Convert.ToDateTime (System.DateTime.Now.ToShortDateString()), Convert.ToInt32 (Request.QueryString["UserID"].ToString()), Convert.ToDecimal("0.0"));
        Response.Redirect("QuestionPaper.aspx");

    }
    protected void lbtnresult_Click(object sender, EventArgs e)
    {
        Response.Redirect("Examresult.aspx");

    }
}

I ought to redirect my website from non-www to www on IIS 6. e.g if I enter domain.com in the url, it has to redirect to www.domain.com for SEO optimization.

I followed the video "http://www.youtube.com/watch?v=PYxabNrIMQ4" for creating my rewrite rule. And I made it as below

<system.webServer>
<rewrite>
<rules>
<rule name="Redirect to www" patternSyntax="Wildcard" stopProcessing="true">
<match url="*" />
<conditions>
<add input="{HTTP_HOST}" pattern="mydomain.com" />
</conditions>
<action type="Redirect" url="http://www.mydomain.com/{R:0}" />
</rule>
</rules>
</rewrite>

But it is not working as expected. Help me out to find the solution.

Note: My Visual studio shows warning like "The element 'system.webServer' has invalid child element 'rewrite'".

I believe it doesn't make any problem.