ListView.VirtualItemsSelectionRangeChanged 事件

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

当 ListView 处于虚拟模式下且某个范围内的项的选定状态发生更改时发生。

public:
 event System::Windows::Forms::ListViewVirtualItemsSelectionRangeChangedEventHandler ^ VirtualItemsSelectionRangeChanged;

public event System.Windows.Forms.ListViewVirtualItemsSelectionRangeChangedEventHandler? VirtualItemsSelectionRangeChanged;

member this.VirtualItemsSelectionRangeChanged : System.Windows.Forms.ListViewVirtualItemsSelectionRangeChangedEventHandler 

Public Custom Event VirtualItemsSelectionRangeChanged As ListViewVirtualItemsSelectionRangeChangedEventHandler 

事件类型

ListViewVirtualItemsSelectionRangeChangedEventHandler

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 VirtualItemsSelectionRangeChanged 。 此报告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.ShowConsole.WriteLine 消息替换为 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 ListView1的类型的ListView实例的项目中。 然后，确保事件处理程序与 VirtualItemsSelectionRangeChanged 事件相关联。

private void ListView1_VirtualItemsSelectionRangeChanged(Object sender, ListViewVirtualItemsSelectionRangeChangedEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "EndIndex", e.EndIndex );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "IsSelected", e.IsSelected );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "StartIndex", e.StartIndex );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "VirtualItemsSelectionRangeChanged Event" );
}

Private Sub ListView1_VirtualItemsSelectionRangeChanged(sender as Object, e as ListViewVirtualItemsSelectionRangeChangedEventArgs) _ 
     Handles ListView1.VirtualItemsSelectionRangeChanged

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "EndIndex", e.EndIndex)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "IsSelected", e.IsSelected)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "StartIndex", e.StartIndex)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"VirtualItemsSelectionRangeChanged Event")

End Sub

注解

ListView如果 未处于虚拟模式，则会发生该ItemSelectionChanged事件。

有关处理事件的详细信息，请参阅 处理和引发事件。

另请参阅

• ItemSelectionChanged