WPF - Tab Control - Selected Tab Item Header To Bold

private void tabControl1_SelectionChanged_1(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            try
            {
                for (int i = 0; i <= 3; i++)
                {
                    System.Windows.Controls.TabItem tab1 = tabControl1.Items.GetItemAt(i) as System.Windows.Controls.TabItem;
                    tab1.FontWeight = FontWeights.Normal;
                }

                System.Windows.Controls.TabItem tab = tabControl1.SelectedItem as System.Windows.Controls.TabItem;
                tab.FontWeight = FontWeights.Bold;
            }
            catch (Exception)
            {
            }
        }