/// <summary>
/// Country dropdownlist SelectedIndexChanged event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e)
{
// Remove region dropdownlist items
ddlRegion.Items.Clear();
string strCountry = string.Empty;
strCountry = ddlCountry.SelectedValue;
List <string> list = null;
// Bind Region dropdownlist based on country value
if (ddlCountry.SelectedIndex != 0)
{
list = RetrieveDataFromXml.GetRegionByCountry(strCountry);
if (list != null && list.Count != 0)
{
ddlRegion.Enabled = true;
}
ddlRegion.DataSource = list;
ddlRegion.DataBind();
}
else
{
ddlRegion.Enabled = false;
}
ddlRegion.Items.Insert(0, new ListItem("Select Region", "-1"));
// Clear city dropdownlist
ddlCity.Enabled = false;
ddlCity.Items.Clear();
ddlCity.Items.Insert(0, new ListItem("Select City", "-1"));
// Initialize city dropdownlist selected index
hdfDdlCitySelectIndex.Value = "0";
}
/// <summary>
/// Get region basing on country value
/// </summary>
/// <param name="strValue">The country value</param>
public void RetrieveRegionByCountry(string strValue)
{
List <string> list = RetrieveDataFromXml.GetRegionByCountry(strValue);
WriteData(list);
}