Page.RaisePostBackEvent(IPostBackEventHandler, String) 方法

定义

通知引起回发的服务器控件:它应处理传入的回发事件。Notifies the server control that caused the postback that it should handle an incoming postback event.

protected:
 virtual void RaisePostBackEvent(System::Web::UI::IPostBackEventHandler ^ sourceControl, System::String ^ eventArgument);
protected virtual void RaisePostBackEvent (System.Web.UI.IPostBackEventHandler sourceControl, string eventArgument);
abstract member RaisePostBackEvent : System.Web.UI.IPostBackEventHandler * string -> unit
override this.RaisePostBackEvent : System.Web.UI.IPostBackEventHandler * string -> unit
Protected Overridable Sub RaisePostBackEvent (sourceControl As IPostBackEventHandler, eventArgument As String)

参数

sourceControl
IPostBackEventHandler

引起回发的 ASP.NET 服务器控件。The ASP.NET server control that caused the postback. 该控件必须实现 IPostBackEventHandler 接口。This control must implement the IPostBackEventHandler interface.

eventArgument
String

回发参数。The postback argument.

示例

下面的示例使用 RaisePostBackEvent 方法,通知 ASP.NET 当单击自定义 userButton 服务器控件时引发回发事件。The following example uses the RaisePostBackEvent method to notify ASP.NET that a post-back event is raised when a custom userButton server control is clicked.

void DisplayUserName(Object sender, EventArgs ea) 
{
   Response.Write("Welcome to " + Server.HtmlEncode(userName.Text));
}
void RaiseEvent(Object sender, EventArgs ea)
{
   // Raise a post back event for a control.
   this.RaisePostBackEvent(userButton, "");
}
void Page_Load(Object sender, EventArgs ea)
{
   // Register a control as one that requires postback handling.
   this.RegisterRequiresRaiseEvent(userButton);
}
    Sub DisplayUserName(Sender As Object, e As EventArgs) 
       Response.Write("Welcome to " + Server.HtmlEncode(userName.Text))
    End Sub

   Sub MyRaiseEvent(Sender As Object, e As EventArgs)
       'Raises a post back event for a control.
        Me.RaisePostBackEvent(userButton, "")
   End Sub 
    
    Sub Page_Load(Sender As Object, e As EventArgs)

      'Registers a control as one that requires postback handling
      Me.RegisterRequiresRaiseEvent(userButton)
  End Sub

注解

当发生回发时,Page 对象将调用 RaisePostBackEvent 方法。The Page object calls the RaisePostBackEvent method when a postback occurs. 此调用在加载后的页面生命周期中进行,更改通知完成之后但在预呈现之前发生。This call occurs in the page life cycle after loading and change notification are complete but before prerendering occurs.

适用于

另请参阅