webcustomcontrol1.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebControlTime
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
    public class WebCustomControl1 : WebControl
    {
        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("")]
        [Localizable(true)]
          string _text;
        public WebCustomControl1()
            : base("H1")
        { }
        protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            if (_text == null)
                _text = "使用WebControl类创建服务器控件！！！";
        }
        protected override void RenderContents(HtmlTextWriter writer)
        {
            writer.Write(_text + System.DateTime.Now.ToLongDateString());    
        }

    }
}