Me.WebTab1.ClientEvents.TabAdding = "WebTab1_TabAdding"
this.WebTab1.ClientEvents.TabAdding = "WebTab1_TabAdding";
// The client event TabAdding takes two parameters sender and e // sender is the object which is raising the event // e is the TabItemCancelEventArgs function WebTab1_TabAdding(sender, e) { //Gets the index where a new tab is going to be added var tabIndex = e.get_tabIndex(); if (tabIndex>19) //Cancels the TabAdding event if tab index greater than 19 e.set_cancel(true); }
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