ToolStripDropDownClosingEventArgs.CloseReason 属性

定义

获取 ToolStripDropDown 关闭的原因。

public:
 property System::Windows::Forms::ToolStripDropDownCloseReason CloseReason { System::Windows::Forms::ToolStripDropDownCloseReason get(); };
public System.Windows.Forms.ToolStripDropDownCloseReason CloseReason { get; }
member this.CloseReason : System.Windows.Forms.ToolStripDropDownCloseReason
Public ReadOnly Property CloseReason As ToolStripDropDownCloseReason

属性值

ToolStripDropDownCloseReason 值之一。

示例

下面的代码示例演示了此成员的用法。 在此示例中,事件处理程序报告事件的发生情况 ToolStripDropDown.Closing 。 此报表可帮助你了解事件发生的时间,并可以帮助你进行调试。 若要报告多个事件或频繁发生的事件,请考虑将 MessageBox.Show 替换为 Console.WriteLine 或将消息追加到多行 TextBox

若要运行示例代码,请将其粘贴到包含名为 ToolStripDropDown1的 类型的ToolStripDropDown实例的项目中。 然后,确保事件处理程序与 ToolStripDropDown.Closing 事件相关联。

private void ToolStripDropDown1_Closing(Object sender, ToolStripDropDownClosingEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "CloseReason", e.CloseReason );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Cancel", e.Cancel );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "Closing Event" );
}
Private Sub ToolStripDropDown1_Closing(sender as Object, e as ToolStripDropDownClosingEventArgs) _ 
     Handles ToolStripDropDown1.Closing

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "CloseReason", e.CloseReason)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Cancel", e.Cancel)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"Closing Event")

End Sub

适用于