/// <summary>
/// Region dropdownlist SelectedIndexChanged event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void ddlRegion_SelectedIndexChanged(object sender, EventArgs e)
{
// Bind city dropdownlist based on region value
string strRegion = string.Empty;
strRegion = ddlRegion.SelectedValue;
List <string> list = null;
list = RetrieveDataFromXml.GetCityByRegion(strRegion);
ddlCity.Items.Clear();
ddlCity.DataSource = list;
ddlCity.DataBind();
ddlCity.Items.Insert(0, new ListItem("Select City", "-1"));
// Initialize city dropdownlist selected index
hdfDdlCitySelectIndex.Value = "0";
// Enable city dropdownlist when it has items
if (list.Count > 0)
{
ddlCity.Enabled = true;
}
else
{
ddlCity.Enabled = false;
}
}
/// <summary>
/// Get city basing on region value
/// </summary>
/// <param name="strValue">The region value</param>
public void RetrieveCityByRegion(string strValue)
{
List <string> list = RetrieveDataFromXml.GetCityByRegion(strValue);
WriteData(list);
}