XamTabControl クラス

using Infragistics.Windows.Controls;
using Infragistics.Windows.Controls.Events;

    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();

            // tabs will be displayed on multiple rows and sized so fit each row
            this.xamTabControl1.TabLayoutStyle = TabLayoutStyle.MultiRowSizeToFit;

            // the maximum visible tab rows is set to 4. If the tab control is sized
            // so there are more than 4 rows then scroll buttons will be displayed
            this.xamTabControl1.MaximumTabRows = 4;

            // Specify the maximum # of device independent units that can be added 
            // to each tab item we adjusting to fit the size of the XamTabControl.
            // Setting this limit prevents the tabs from being resized too large.
            this.xamTabControl1.MaximumSizeToFitAdjustment = 50;

            // specify the spacing between each tab
            this.xamTabControl1.InterTabSpacing = 2;

            // specify the spacing between each tab row
            this.xamTabControl1.InterRowSpacing = 2;

            // specify the minimum extent to each tab
            this.xamTabControl1.MinimumTabExtent = 100;

            // Allow tab closing by default.
            this.xamTabControl1.AllowTabClosing = true;
            
            // Note: tab closing can be overriden on each TabItemEx by setting its AllowClosing
            // property, e.g.
            ((TabItemEx)this.xamTabControl1.Items[0]).AllowClosing = false;

            // Show a close button in the tab header area that will close the selected tab
            this.xamTabControl1.ShowTabHeaderCloseButton = true;

            // Show a close button in the TabItemEx if the tab is selected
            // or if the mouse is over it.
            this.xamTabControl1.TabItemCloseButtonVisibility = TabItemCloseButtonVisibility.WhenSelectedOrHotTracked;
            
            // Note: tab item close button visibility can be overriden on each TabItemEx by 
            // setting its CloseButtonVisibility property, e.g.
            ((TabItemEx)this.xamTabControl1.Items[2]).CloseButtonVisibility = TabItemCloseButtonVisibility.Hidden;

            // Wire the Closing event for a specific tab. Setting Cancel to true inside the event will 
            // prevent the tab from being closed
            ((TabItemEx)this.xamTabControl1.Items[1]).Closing += new EventHandler<TabClosingEventArgs>(tabItemEx2_Closing);

            // Note: when the XamTabControl closes a tab it leaves it in the Items
            // collection an just sets the tab item's Visibility to 'Collapsed'.
            // Therefore, to unclose a tab set its Visibility property back to 'Visible'
        }

        private void tabItemEx2_Closing(object sender, TabClosingEventArgs e)
        {
            // Setting Cancel to true will prevent the tab from being closed
            e.Cancel = true;
        }