areaselector.ascx.cs

ajax地区选择列表

namespace DataSaver.SDE2HManager.Common
{
	using System;
	using System.Data;
	using System.Drawing;
	using System.Web;
	using System.Web.UI.WebControls;
	using System.Web.UI.HtmlControls;

	/// <summary>
	///		AreaSelector 的摘要说明。
	/// </summary>
	public class AreaSelector : System.Web.UI.UserControl
	{
		protected System.Web.UI.WebControls.DropDownList Province;
		protected System.Web.UI.WebControls.DropDownList City;
		protected System.Web.UI.WebControls.DropDownList Section;
		protected System.Web.UI.HtmlControls.HtmlGenericControl AllCities;
		protected System.Web.UI.HtmlControls.HtmlGenericControl AllSection;

		private DataSaver.SDE2HClass.SDE2HManagerClass.Area _SelectedArea; 

		public DataSaver.SDE2HClass.SDE2HManagerClass.Area SelectedArea 
		{ 
			get 
			{ 
				if (this._SelectedArea == null) 
				{ 
					if (!(Page.IsPostBack)) 
					{ 
						if (!(this.Section.SelectedItem == null)) 
						{ 
							this._SelectedArea = new DataSaver.SDE2HClass.SDE2HManagerClass.Area(this.Section.SelectedValue); 
							return this._SelectedArea; 
						} 
					} 
					string SelectedValue = Request.Params[this.Section.ClientID.Replace("_", ":")]; 
					if (SelectedValue == "" || SelectedValue==null) 
					{ 
						SelectedValue = Request.Params[this.City.ClientID.Replace("_", ":")]; 
						if (SelectedValue == "" || SelectedValue==null) 
						{ 
							SelectedValue = this.Province.SelectedValue; 
						} 
					} 
					this._SelectedArea = new DataSaver.SDE2HClass.SDE2HManagerClass.Area(SelectedValue); 
				} 
				return this._SelectedArea; 
			} 
			set 
			{ 
				if (value == null) 
				{ 
					return; 
				} 
				this.BindProvince(); 
				string Prefix = value.AreaCode.Substring(0, 2); 
				foreach (System.Web.UI.WebControls.ListItem l in this.Province.Items) 
				{ 
					if (l.Value.Substring(0, 2) == Prefix) 
					{ 
						l.Selected = true; 
					} 
				} 
				this.City.DataSource = DataSaver.SDE2HClass.SDE2HManagerClass.Area.GetCities(new DataSaver.SDE2HClass.SDE2HManagerClass.Area(Prefix + "0000")); 
				this.City.DataTextField = "name"; 
				this.City.DataValueField = "sz_code"; 
				this.City.DataBind(); 
				Prefix = value.AreaCode.Substring(0, 4); 
				foreach (System.Web.UI.WebControls.ListItem l in this.City.Items) 
				{ 
					if (l.Value.Substring(0, 4) == Prefix) 
					{ 
						l.Selected = true; 
					} 
				} 
				this.Section.DataSource = DataSaver.SDE2HClass.SDE2HManagerClass.Area.GetSection(new DataSaver.SDE2HClass.SDE2HManagerClass.Area(Prefix + "00")); 
				this.Section.DataTextField = "name"; 
				this.Section.DataValueField = "sz_code"; 
				this.Section.DataBind(); 
				foreach (System.Web.UI.WebControls.ListItem l in this.Section.Items) 
				{ 
					if (l.Value == value.AreaCode) 
					{ 
						l.Selected = true; 
					} 
				} 
			} 
		} 

		public bool Enabled 
		{ 
			get 
			{ 
				return this.Province.Enabled; 
			} 
			set 
			{ 
				this.Province.Enabled = value; 
				this.City.Enabled = value; 
				this.Section.Enabled = value; 
			} 
		} 

		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			this.AllCities.InnerHtml = DataSaver.SDE2HClass.SDE2HManagerClass.Area.GetCities().GetXml(); 
			this.AllSection.InnerHtml = DataSaver.SDE2HClass.SDE2HManagerClass.Area.GetSection().GetXml(); 
			if (Page.IsPostBack) 
			{ 
				return; 
			} 
			this.BindProvince(); 
		} 

		private void BindProvince() 
		{ 
			if (this.Province.Items.Count > 0) 
			{ 
				return; 
			} 
			this.Province.DataSource = DataSaver.SDE2HClass.SDE2HManagerClass.Area.GetProvice(); 
			this.Province.DataTextField = "name"; 
			this.Province.DataValueField = "sz_code"; 
			this.Province.DataBind(); 
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		///		设计器支持所需的方法 - 不要使用代码编辑器
		///		修改此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.Load += new System.EventHandler(this.Page_Load);
		}
		#endregion
	}
}