那些年朋友劝，该知道的ASP.NET - 自定义控件处理页面事件（控件与页面数据交互）的方法

//用委托的方法实现
//控件代码
public delegate void DelegateFunction( string sPageTitle );
private DelegateFunction delegateChangePageTitle = null;
public DelegateFunction ChangePT
{
get { return delegateChangePageTitle; }set { delegateChangePageTitle = value; }
}
protected void BtEdit_Click( object sender, EventArgs e )
{
if ( delegateChangePageTitle != null ) delegateChangePageTitle( "Edit" );
}
protected void BtAdd_Click( object sender, EventArgs e )
{
if ( delegateChangePageTitle != null ) delegateChangePageTitle( "Add" );
}

//页面	后台代码
protected void Page_Load( object sender, EventArgs e )
{            myWebControl11.ChangePT = ChangePT;        }
void ChangePT( string sTmp )
{            this.Page.Title = sTmp;        }
//页面	前代码
<%@ Register src="myWebControl.ascx" tagname="myWebControl1" tagprefix="uc1" %>
<uc1:myWebControl1 ID="myWebControl11" runat="server" />

//用事件的方法实现  控件定义事件	页面实现
//控件代码
//定义一个不含数据的事件处理方法
public event EventHandler ClickModifyTitle;
protected void btCreateValue_Click( object sender, EventArgs e )
{            ClickModifyTitle( this, EventArgs.Empty );         }

//页面后台代码
protected void Page_Load( object sender, EventArgs e )
{
myWebControl11.ClickModifyTitle +=new EventHandler(myWebControl11_ClickModifyTitle);
}

void myWebControl11_ClickModifyTitle( object sender, EventArgs e )
{
this.Page.Title += new Random().Next( 1000, 9999 ).ToString();
}