DataGridView.OnRowErrorTextNeeded(DataGridViewRowErrorTextNeededEventArgs) 方法

定义

引发 RowErrorTextNeeded 事件。Raises the RowErrorTextNeeded event.

protected:
 virtual void OnRowErrorTextNeeded(System::Windows::Forms::DataGridViewRowErrorTextNeededEventArgs ^ e);
protected virtual void OnRowErrorTextNeeded (System.Windows.Forms.DataGridViewRowErrorTextNeededEventArgs e);
abstract member OnRowErrorTextNeeded : System.Windows.Forms.DataGridViewRowErrorTextNeededEventArgs -> unit
override this.OnRowErrorTextNeeded : System.Windows.Forms.DataGridViewRowErrorTextNeededEventArgs -> unit
Protected Overridable Sub OnRowErrorTextNeeded (e As DataGridViewRowErrorTextNeededEventArgs)

参数

注解

引发事件时,将通过委托调用事件处理程序。Raising an event invokes the event handler through a delegate. 有关详细信息,请参阅处理和引发事件For more information, see Handling and Raising Events.

OnRowErrorTextNeeded 方法还允许派生类对事件进行处理而不必附加委托。The OnRowErrorTextNeeded method also allows derived classes to handle the event without attaching a delegate. 这是在派生类中处理事件的首选技术。This is the preferred technique for handling the event in a derived class.

继承者说明

在派生类中重写 OnRowErrorTextNeeded(DataGridViewRowErrorTextNeededEventArgs) 时,请确保调用基类 "OnRowErrorTextNeeded(DataGridViewRowErrorTextNeededEventArgs) 方法,以便注册的委托接收事件。When overriding OnRowErrorTextNeeded(DataGridViewRowErrorTextNeededEventArgs) in a derived class, be sure to call the base class' OnRowErrorTextNeeded(DataGridViewRowErrorTextNeededEventArgs) method so that registered delegates receive the event.

适用于

另请参阅