ListView.ItemMouseHover 事件

定义

当鼠标悬停于某项上时发生。Occurs when the mouse hovers over an item.

public:
 event System::Windows::Forms::ListViewItemMouseHoverEventHandler ^ ItemMouseHover;
public event System.Windows.Forms.ListViewItemMouseHoverEventHandler ItemMouseHover;
member this.ItemMouseHover : System.Windows.Forms.ListViewItemMouseHoverEventHandler 
Public Custom Event ItemMouseHover As ListViewItemMouseHoverEventHandler 

示例

下面的代码示例演示如何使用此成员。The following code example demonstrates the use of this member. 在此示例中,事件处理程序报告 ItemMouseHover 事件的发生。In the example, an event handler reports on the occurrence of the ItemMouseHover event. 此报表可帮助你了解何时发生事件,并可帮助你进行调试。This report helps you to learn when the event occurs and can assist you in debugging. 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 或将消息附加到多行 TextBox中。To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

若要运行示例代码,请将其粘贴到包含名为 ListView1ListView 类型实例的项目中。To run the example code, paste it into a project that contains an instance of type ListView named ListView1. 然后,确保事件处理程序与 ItemMouseHover 事件关联。Then ensure that the event handler is associated with the ItemMouseHover event.

private void ListView1_ItemMouseHover(Object sender, ListViewItemMouseHoverEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Item", e.Item );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "ItemMouseHover Event" );
}
Private Sub ListView1_ItemMouseHover(sender as Object, e as ListViewItemMouseHoverEventArgs) _ 
     Handles ListView1.ItemMouseHover

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

End Sub

注解

有关处理事件的详细信息,请参阅处理和引发事件For more information about handling events, see Handling and Raising Events.

适用于