Version

ActiveTabChanging Event

Occurs before the ActiveTab is changed.
Syntax
'Declaration
 
Public Event ActiveTabChanging As ActiveTabChangingEventHandler
public event ActiveTabChangingEventHandler ActiveTabChanging
Event Data

The event handler receives an argument of type ActiveTabChangingEventArgs containing data related to this event. The following ActiveTabChangingEventArgs properties provide information specific to this event.

PropertyDescription
Cancel (Inherited from System.ComponentModel.CancelEventArgs) 
Tab (Inherited from Infragistics.Win.UltraWinTabControl.CancelableTabEventArgs)Gets the tab to which these event parameters apply.
Example
The following code demonstrates how to access some of the information passed in the event arguments of the ActiveTabChanging event.

For an overview of how to handle events in Visual Basic or Visual C#, see Event Handlers in Visual Basic and Visual C#. For specific information and code examples illustrating how to consume events in your application, see Consuming Events in the .NET Framework Developer's Guide.

Imports Infragistics.Win
Imports Infragistics.Win.UltraWinTabs
Imports Infragistics.Win.UltraWinTabControl


Private Sub ultraTabControl1_ActiveTabChanging(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTabControl.ActiveTabChangingEventArgs) Handles ultraTabControl1.ActiveTabChanging

    Dim dr As DialogResult

    dr = MessageBox.Show(Me, "The tab with text '" + e.Tab.Text + "' is about to be activated. Do you want to cancel activation?", "Cancelable Tab Event", MessageBoxButtons.YesNo)

    If (dr = DialogResult.Yes) Then
        e.Cancel = True
    End If

End Sub
using System.Diagnostics;
using Infragistics.Win;
using Infragistics.Win.UltraWinTabs;
using Infragistics.Win.UltraWinTabControl;


private void ultraTabControl1_ActiveTabChanging(object sender, Infragistics.Win.UltraWinTabControl.ActiveTabChangingEventArgs e)
{
	DialogResult dr =  MessageBox.Show(this, "The tab with text '" + e.Tab.Text + "' is about to be activated. Do you want to cancel activation?", "Cancelable Tab Event", MessageBoxButtons.YesNo);

	if (dr == DialogResult.Yes)
		e.Cancel = true;
		
}
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also