TabControlEventArgs 类

定义

Selected 控件的 DeselectedTabControl 事件提供数据。Provides data for the Selected and Deselected events of a TabControl control.

public ref class TabControlEventArgs : EventArgs
public class TabControlEventArgs : EventArgs
type TabControlEventArgs = class
    inherit EventArgs
Public Class TabControlEventArgs
Inherits EventArgs
继承
TabControlEventArgs

示例

下面的代码示例演示如何使用此类型。The following code example demonstrates the use of this type. 在此示例中, 事件处理程序报告Selected事件的发生。In the example, an event handler reports on the occurrence of the Selected 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ShowConsole.WriteLine消息替换为多行或将TextBox其追加到多行。To report on multiple events or on events that occur frequently, consider replacing 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TabControl TabControl1的类型的实例的项目中。To run the example code, paste it into a project that contains an instance of type TabControl named TabControl1. 然后, 确保事件处理程序与Selected事件相关联。Then ensure that the event handler is associated with the Selected event.

private void TabControl1_Selected(Object sender, TabControlEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "TabPage", e.TabPage );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "TabPageIndex", e.TabPageIndex );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Action", e.Action );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "Selected Event" );
}
Private Sub TabControl1_Selected(sender as Object, e as TabControlEventArgs) _ 
     Handles TabControl1.Selected

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

End Sub

注解

Action使用属性可确定发生的事件。Use the Action property to determine which event is occurring. 这使您可以通过一个事件处理程序来处理多个事件类型。This enables you to handle multiple event types with one event handler.

TabPage使用和TabPageIndex属性来确定TabPage发生事件的事件。Use the TabPage and TabPageIndex properties to determine which TabPage the event is occurring for.

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.

构造函数

TabControlEventArgs(TabPage, Int32, TabControlAction)

初始化 TabControlEventArgs 类的新实例。Initializes a new instance of the TabControlEventArgs class.

属性

Action

获取一个值,该值指示当前发生的事件。Gets a value indicating which event is occurring.

TabPage

获取发生的事件所针对的 TabPageGets the TabPage the event is occurring for.

TabPageIndex

获取 TabPage 集合中 TabPages 的从零开始的索引。Gets the zero-based index of the TabPage in the TabPages collection.

方法

Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)

适用于

另请参阅