datalist.cs

这是1个对服务器空间datalist功能进行扩展的文件

using System;
using System.Web;
using System.Web.UI;
using System.Web.Util;
using System.ComponentModel;

namespace Epico.Controls
{
	/// <summary>
	/// DataList 的摘要说明。
	/// </summary>
 	[DefaultEvent("SelectedIndexChanged")]
	[DefaultProperty("DataSource")]
	public class DataList:System.Web.UI.WebControls.DataList
	{
		private int itemCount = 0;

		public int ItemCount
		{
			get
			{
				return itemCount;
			}
		}

		protected override void Render(HtmlTextWriter writer)
		{
			foreach(System.Web.UI.WebControls.DataListItem item in Items)
			{
				if(item.ItemType == System.Web.UI.WebControls.ListItemType.AlternatingItem
					||item.ItemType == System.Web.UI.WebControls.ListItemType.Item)
				{
					itemCount++;
				}
			}
			base.Render(writer);
			if ( itemCount == 0 ) writer.Write("<div align=adjust>无项目</div>");
		}
	}
}