private WebAuthorizer auth;
private TwitterContext twitterCtx;

protected void Page_Load(object sender, EventArgs e)
{
    IOAuthCredentials credentials = new SessionStateCredentials();

    if (credentials.ConsumerKey == null || credentials.ConsumerSecret == null)
    {
        credentials.ConsumerKey = ConfigurationManager.AppSettings["twitterConsumerKey"];
        credentials.ConsumerSecret = ConfigurationManager.AppSettings["twitterConsumerSecret"];
    }

    auth = new WebAuthorizer
    {
        Credentials = credentials,
        PerformRedirect = authUrl => Response.Redirect(authUrl)
    };

    if (!Page.IsPostBack && Request.QueryString["oauth_token"] != null)
    {
        auth.CompleteAuthorization(Request.Url);
    }

    if (string.IsNullOrWhiteSpace(credentials.ConsumerKey) ||
        string.IsNullOrWhiteSpace(credentials.ConsumerSecret))
    {
     //Do nothing
    }
    else if (auth.IsAuthorized)
    {
     //Do nothing
    }
    else
    {
        auth.BeginAuthorization(Request.Url);

        if (!auth.IsAuthorized)
        {
            Uri specialUri = new Uri(Request.Url.ToString());
            auth.BeginAuthorization(specialUri);
        }
    }

    if (auth.IsAuthorized)
    {
        twitterCtx = new TwitterContext(auth);

       #region Search Text
        var searchResult =
            (from srch in twitterCtx.Search
             where srch.Type == SearchType.Search &&
                   srch.Query == "Brian Adams"
             select srch)
            .SingleOrDefault();
        gvTweetView.DataSource = searchResult.Statuses;
        gvTweetView.DataBind();
     #endregion

        #region UserInfo
        var users =
                       (from user in twitterCtx.User
                        where user.Type == UserType.Lookup &&
                              user.ScreenName == "prosarfraz"
                        select user);

        string strHtml = string.Empty;


        foreach (User objUser in users)
        {

            strHtml += "<TR>";
            strHtml += "<TD> Screen Name </TD>";
            strHtml += "<TD>" + objUser.ScreenName + "</TD>";
            strHtml += "<TD> Favorites Count </TD>";
            strHtml += "<TD>" + objUser.FavoritesCount + "</TD>";
            strHtml += "<TD> Followers </TD>";
            strHtml += "<TD>" + objUser.FollowersCount + "</TD>";
            strHtml += "<TD> Description </TD>";
            strHtml += "<TD>" + objUser.Description + "</TD>";
            strHtml += "</TR>";

        }
        ulsrc.InnerHtml = "<Table border ='1'>" + strHtml + "</Table>"; 
        #endregion
 
    }
}