Discuz.Control/DropDownList.cs

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using System.Data;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

using Discuz.Common;
using Discuz.Data;

namespace Discuz.Control
{
	/// <summary>
	/// 下拉列表控件。
	/// </summary>
	[DefaultProperty("Text"), ToolboxData("<{0}:DropDownList runat=server></{0}:DropDownList>")]
    public class DropDownList : System.Web.UI.WebControls.DropDownList, Discuz.Control.IWebControl, IPostBackDataHandler
	{

        public void AddTableData(DataTable dt, string textName, string valueName)
        {
            this.Items.Clear();
            //加载树
            this.Items.Add(new ListItem("请选择     ", "0"));

            foreach (DataRow r in dt.Rows)
            {
                this.Items.Add(new ListItem(r[textName].ToString(), r[valueName].ToString()));
            }
            this.DataBind();

        }

        /// <summary>
        /// 当某选项被选中后,获取焦点的控件ID(如提交按钮等)
        /// </summary>
		[Bindable(true),Category("Appearance"),DefaultValue("")]
        public string SetFocusButtonID
        {
            get
            {
                object o = ViewState[this.ClientID + "_SetFocusButtonID"];
                return (o == null) ? "" : o.ToString();
            }
            set
            {
                ViewState[this.ClientID + "_SetFocusButtonID"] = value;
                if (value != "")
                {
                    this.Attributes.Add("onChange", "document.getElementById('" + value + "').focus();");
                }
            }
        }


        private string _hintTitle = "";
        /// <summary>
        /// 提示框标题
        /// </summary>
        [Bindable(true), Category("Appearance"), DefaultValue("")]
        public string HintTitle
        {