JavaScript实现DropDownList(Select)三级联动无刷新

JavaScript实现DropDownList(Select)三级联动无刷新

Javascript代码



Html代码


请选择所属国家

Value=" ">请选择所属省


请选择所属市


Aspx.cs代码

protected void Page_Load(object sender, EventArgs e)
{
mon.StringFormat sft = new mon.StringFormat();
string AreaId = sft.Html_Fn(Request.QueryString["AreaId"].ToString());
StringBuilder AreaString = new StringBuilder();
AreaString.Append("");
if (!Page.IsPostBack)
{
//Response.Write(AreaIdValid(AreaId.ToString()));
SoLe.BLL.AreaTable bll = new SoLe.BLL.AreaTable();
DataSet ds = new DataSet();
ds = bll.GetList(" PaterId=" + AreaId.ToString()+" ");
if (!object.Equals(ds, null) && ds.Tables[0].Rows.Count > 0) {
for (int i = 0; i < ds.Tables[0].Rows.Count; i++) {
if (string.IsNullOrEmpty(AreaString.ToString()))
{
AreaString.Append(ds.Tables[0].Rows[i]["Title"].ToString() + "," + ds.Tables[0].Rows[i]["Id"].ToString());
}
else {
AreaString.Append("|" + ds.Tables[0].Rows[i]["Title"].ToString() + "," + ds.Tables[0].Rows[i]["Id"].ToString());
}
}
}
}
Response.Write(AreaString.ToString());
}