SelectedIndexChanging Property

Gets sets name of javascript function which is called before tab was selected.

Syntax

Visual Basic

'Declaration
 
Public Property SelectedIndexChanging As String

C#

public string SelectedIndexChanging {get; set;}

Remarks

Selection change can be canceled. Second param in handler is instance of TabSelectedIndexChangingEventArgs class, which provides information about old and new selected TabItems.

Example

Visual Basic

Me.WebTab1.ClientEvents.SelectedIndexChanging = "WebTab1_SelectedIndexChanging"

C#

this.WebTab1.ClientEvents.SelectedIndexChanging = "WebTab1_SelectedIndexChanging";

JScript

// The client event SelectedIndexChanging takes two parameters sender and e
// sender  is the object which is raising the event
// e is the TabSelectedIndexChangingEventArgs

function WebTab1_SelectedIndexChanging(sender, e) {

              //Gets the new selected index
              var newIndex = e.get_tabIndex();

              //Gets the old selected index
              var oldIndex = e.get_oldTabIndex();

              if(oldIndex == 2)

              //Cancels the SelectedIndexChanging event
                  e.set_cancel(true);
                 

          }

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, 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