Page.RaisePostBackEvent(IPostBackEventHandler, String) Page.RaisePostBackEvent(IPostBackEventHandler, String) Page.RaisePostBackEvent(IPostBackEventHandler, String) Page.RaisePostBackEvent(IPostBackEventHandler, String) Method

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 IPostBackEventHandler IPostBackEventHandler 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 String String String

回发参数。 The postback argument.

示例

下面的示例使用RaisePostBackEvent方法以通知 ASP.NET 回发事件引发时自定义userButton服务器控件时发生。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

Page对象调用RaisePostBackEvent方法时产生的回发。The Page object calls the RaisePostBackEvent method when a postback occurs. 完成加载和更改通知后但在预呈现发生之前,此调用是在页生命周期中。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