c#自定義控件中事件的處理_.Net教程
      
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      推薦：ASP.NET利用MD.DLL轉(zhuǎn)EXCEL具體實(shí)現(xiàn)
      首先引入MD.dll 文件(附有下載地址)然后建立無CS文件的DownExcel.aspx 文件，接下來是調(diào)用方法，感興趣的朋友可以參考下哈
       using System;  
      

using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Text;  
using System.Windows.Forms;  
  
namespace ClientControl  
{  
    //1.定義委托
    public delegate void NewsClickEventHandle(object sender,NewsEventArg args);  
    public partial class NewsStage : Control  
    {  
        //2.定義事件
        public event NewsClickEventHandle NewsClicked;  
        private Graphics g;  
        private bool isMouseOn = false;  
        public NewsStage()  
        {  
            InitializeComponent(); 
            //3.事件觸發(fā)，這樣少了事件注冊，我們在其他窗體中引用控件時(shí)只需要注冊事件和編輯事件處理程序即可，可以對比上一篇博客
            this.Click += new EventHandler(NewsStage_Click);  
            this.MouseMove += new MouseEventHandler(NewsStage_MouseMove);  
            this.MouseLeave += new EventHandler(NewsStage_MouseLeave);  
        }  
  
        void NewsStage_MouseLeave(object sender, EventArgs e)  
        {  
            isMouseOn = false;  
            this.Invalidate();  
        }  
  
        void NewsStage_MouseMove(object sender, MouseEventArgs e)  
        {  
            isMouseOn = true;  
            this.Invalidate();  
        }  
  
        //新聞被點(diǎn)擊  事件觸發(fā)方法
        void NewsStage_Click(object sender, EventArgs e)  
        {  
            if (_NewsID>=0&&_NewsTitle!="")  
            {  
                NewsEventArg myArgs = new NewsEventArg(_NewsID,_NewsTitle);  
                NewsClicked(this, myArgs);  
            }  
        }  
  
  
  
        private int _NewsID = 0;  
  
        [Description("新聞ID"), Category("Appearance")]  
        public int NewsID  
        {  
            get { return _NewsID; }  
            set  
            {  
                _NewsID = value;  
                this.Invalidate();  
            }  
        }  
  
        /// <summary>  
        /// 新聞標(biāo)題  
        /// </summary>  
        private string _NewsTitle = "";  
  
        [Description("新聞標(biāo)題"), Category("Appearance")]  
        public string NewsTitle  
        {  
            get { return _NewsTitle; }  
            set  
            {  
                _NewsTitle = value;  
                this.Invalidate();  
            }  
        }  
  
  
        private Color _MouseOnColor = new Color();  
        [Description("鼠標(biāo)劃上的樣色"), Category("Appearance")]  
        public Color MouseOnColor  
        {  
            get { return _MouseOnColor; }  
            set  
            {  
                _MouseOnColor = value;  
            }  
        }  
        protected override void OnPaint(PaintEventArgs pe)  
        {  
            base.OnPaint(pe);  
            g = this.CreateGraphics();  
            if (isMouseOn)  
            {  
                g.DrawString(_NewsTitle, this.Font, new SolidBrush(this._MouseOnColor), new PointF(0, 0));  
            }  
            else  
            {  
                g.DrawString(_NewsTitle, this.Font, new SolidBrush(this.ForeColor), new PointF(0, 0));  
            }  
              
        }  
        protected void Dispose()  
        {  
            g.Dispose();  
        }  
          
    }  
    public partial class NewsEventArg : EventArgs  
    {  
        public int NewsID = 0;  
        public string NewsTitle = "";  
  
        public NewsEventArg(int newsID,string newsTitle){  
            NewsID = newsID;  
            NewsTitle = newsTitle;  
        }  
    }  
}   
 
      分享：datagrid綁定list沒有數(shù)據(jù) 表頭不顯示的解決方法
      datagrid綁定list沒有數(shù)據(jù) 表頭不顯示的問題,那是因?yàn)?綁定了null,你給list new一下就好 表頭就會(huì)有啦
      


      

      


      來源：模板無憂//所屬分類：.Net教程/更新時(shí)間：2013-05-22


      


      



      


      



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