VS.NET中事件丢失的避免方法
在vs.net中经常遇到事件丢失的问题，可以这样避免一下
方法一：
把InitializeComponent中的注册事件，如下
private
void
InitializeComponent()
...
{ this.DropDownList1.SelectedIndexChanged += new System.EventHandler(this.DropDownList1_SelectedIndexChanged); this.Button1.Click += new System.EventHandler(this.Button1_Click); this.Load += new System.EventHandler(this.Page_Load);}
剪切到override protected void OnInit(EventArgs e)里面，如下
override
protected
void
OnInit(EventArgs e)
...
{ this.DropDownList1.SelectedIndexChanged += new System.EventHandler(this.DropDownList1_SelectedIndexChanged); this.Button1.Click += new System.EventHandler(this.Button1_Click); this.Load += new System.EventHandler(this.Page_Load);}
方法二：
把InitializeComponent中的注册事件，如下
private
void
InitializeComponent()
...
{ this.DropDownList1.SelectedIndexChanged += new System.EventHandler(this.DropDownList1_SelectedIndexChanged); this.Button1.Click += new System.EventHandler(this.Button1_Click); this.Load += new System.EventHandler(this.Page_Load);}
剪切到你的自定义方法中
private
void
LoadEvent()
...
{ this.DropDownList1.SelectedIndexChanged += new System.EventHandler(this.DropDownList1_SelectedIndexChanged); this.Button1.Click += new System.EventHandler(this.Button1_Click); this.Load += new System.EventHandler(this.Page_Load);}
然后在pageload中调用自定义方法就可以了，如
private
void
Page_Load(
object
sender, System.EventArgs e)
...
{ if(!Page.IsPostBack) ...{ LoadEvent(); }}
每次需要注册方法时，就在刚才的剪切区注册就可以了，这样虽然麻烦一些，但是可以保证事件不会丢失。
摘自 : http://blog.csdn.net/jelink/archive/2006/09/23/1269751.aspx
