Hi,
See the following example.
My need is to get the state list in one DropDownlist according to the country name in another DropDownlist.
Consider My xml(countryContent.xml) like this,
<xml>
<country Name="US">
<state countryId="1" stateName="ottawa" />
<state countryId="1" stateName="SovietUnion" />
<state countryId="1" stateName="u" />
<state countryId="1" stateName="UUU " />
</country>
<country Name="India">
<state countryId="2" stateName="Agra" />
<state countryId="2" stateName="AndraPradesh" />
<state countryId="2" stateName="Kerala" />
<state countryId="2" stateName="Maharastra" />
<state countryId="2" stateName="Mumbai" />
<state countryId="2" stateName="TamilNadu" />
<state countryId="2" stateName="U.P" />
</country>
</xml>

In PageLoad,write the following coding
protected void Page_load(object sender,EventArgs e)
{
DataTable dataTable = new DataTable();
DataRow dr;
dataTable.Columns.Add("countryName", typeof(string));
if (!IsPostBack)
{
XmlDocument xdoc = new XmlDocument();
XmlTextReader xtr = new XmlTextReader(Server.MapPath("countryContent.xml") );
xdoc.Load(xtr);
XmlNodeList xnl = xdoc.DocumentElement.SelectNodes("country");
foreach (XmlNode xnode in xnl)
{
dr = dataTable.NewRow();
dr[0] = xnode.Attributes[0].Value;
dataTable.Rows.Add(dr);
}
countryDropDownList.DataSource = dataTable;
countryDropDownList.DataValueField = "countryName";
countryDropDownList.DataBind();
}
}
Like this, write the coding for state DropDownlist.
This will avoid page refresh