protected void Page_Load(object sender, EventArgs e)
 {
     if (!IsPostBack)
     {
         dbPlaceHolder.Controls.Add(new Literal {
             Text = cityManager.BindDataforViewCitiesPageTable().ToString()
         });
         LoadCountryDropDown();
     }
     if (countryRadioButton.Checked)
     {
         countryDropDownList.Enabled = true;
         searchCityTextBox.Disabled  = true;
     }
     else if (cityRadioButton.Checked)
     {
         searchCityTextBox.Disabled  = false;
         countryDropDownList.Enabled = false;
     }
 }