TabItemContentHeight Property

using Infragistics.Windows.Controls;
using System.Diagnostics;
using System.Windows.Controls.Primitives;


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

            // Allow the tab control to toggle between its minimized and normal state
            this.xamTabControl1.AllowMinimize = true;
            
            // Set the initial state of the control to be minimized
            this.xamTabControl1.IsMinimized = true;

            // Set the height of the tab item conent when it is dropped down
            this.xamTabControl1.TabItemContentHeight = 100;

            // specify an animation to be used when dropping down the tab content area
            this.xamTabControl1.DropDownAnimation = PopupAnimation.Slide;

            // wire the dropdown opened and closed events
            this.xamTabControl1.DropDownOpened += new RoutedEventHandler(xamTabControl1_DropDownOpened);
            this.xamTabControl1.DropDownClosed += new RoutedEventHandler(xamTabControl1_DropDownClosed);
        }

        private void xamTabControl1_DropDownOpened(object sender, RoutedEventArgs e)
        {
            Debug.Assert(this.xamTabControl1.IsDropDownOpen == true);
        }

        private void xamTabControl1_DropDownClosed(object sender, RoutedEventArgs e)
        {
            Debug.Assert(this.xamTabControl1.IsDropDownOpen == false);
        }
    }