Bewerken

Share via


TabControlEventArgs.TabPageIndex Property

Definition

Gets the zero-based index of the TabPage in the TabPages collection.

public:
 property int TabPageIndex { int get(); };
public int TabPageIndex { get; }
member this.TabPageIndex : int
Public ReadOnly Property TabPageIndex As Integer

Property Value

The zero-based index of the TabPage in the TabPages collection.

Examples

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the TabControl.Selected event. This report helps you to learn when the event occurs and can assist you in debugging. 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.

To run the example code, paste it into a project that contains an instance of type TabControl named TabControl1. Then ensure that the event handler is associated with the TabControl.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

Applies to

See also