三级联动，绑定省，市，县代码,Asp.Net代码库,德仔网

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【Asp.Net】三级联动，绑定省，市，县

作者:Dezai.CN / 发布于2013/2/28/ 484


	public void bindProvince()
	 {
	 dsProvince = dal.BindProvince();
	 dal.bindDDL(this.ddlProvince, dsProvince, "province", "provinceID");
	 }
	 public void bindCity(string ProvinceID)
	 {
	 if (ProvinceID != "")
	 {
	 dsCity = dal.BindCity(ProvinceID);
	 dal.bindDDL(ddlcity, dsCity, "city", "cityID");
	 }
	 else
	 {
	 this.ddlcity.DataTextField = "110100";
	 this.ddlcity.DataValueField = "市辖区";
	 this.ddlcity.DataBind();
	 }
	 }
	 public void bindarea(string CityID)
	 {
	 dsArea = dal.Bindarea(CityID);
	 dal.bindDDL(ddlarea, dsArea, "area", "areaID");
	 }
	 protected void ddlProvince_SelectedIndexChanged(object sender, EventArgs e)
	 {
	 string provinceID = this.ddlProvince.SelectedItem.Value;
	 bindCity(provinceID);
	 }
	 protected void ddlcity_SelectedIndexChanged(object sender, EventArgs e)
	 {
	 string cityID = this.ddlcity.SelectedItem.Value;
	 bindarea(cityID);
	 }

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　三级联动　

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