DataGridView.OnCellMouseDown(DataGridViewCellMouseEventArgs) DataGridView.OnCellMouseDown(DataGridViewCellMouseEventArgs) DataGridView.OnCellMouseDown(DataGridViewCellMouseEventArgs) DataGridView.OnCellMouseDown(DataGridViewCellMouseEventArgs) Method

定义

引发 CellMouseDown 事件。Raises the CellMouseDown event.

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

参数

异常

eColumnIndex 属性值大于控件中的列数减一。The value of the ColumnIndex property of e is greater than the number of columns in the control minus one.

-or- eRowIndex 属性值大于控件中的行数减一。The value of the RowIndex property of e is greater than the number of rows in the control minus one.

此操作将提交一个单元格值或者进入编辑模式,但是数据源中的错误禁止执行此操作,DataError 事件没有处理程序,或者处理程序已将 ThrowException 属性设置为 trueThis action would commit a cell value or enter edit mode, but an error in the data source prevents the action and either there is no handler for the DataError event or the handler has set the ThrowException property to true.

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.

OnCellMouseDown 方法还允许派生类对事件进行处理而不必附加委托。The OnCellMouseDown 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 OnCellMouseDown(DataGridViewCellMouseEventArgs) 时,一定要调用基类的 OnCellMouseDown(DataGridViewCellMouseEventArgs) 方法,以便已注册的委托对事件进行接收。When overriding OnCellMouseDown(DataGridViewCellMouseEventArgs) in a derived class, be sure to call the base class's OnCellMouseDown(DataGridViewCellMouseEventArgs) method so that registered delegates receive the event.

适用于

另请参阅