如何动态创建tabControl的Item

1.TabControlDemo.xaml是主界面

2.TabControlDemo .cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Silverlight.Common.View
{
    public partial class TabControlDemo : UserControl
    {
        public TabControlDemo()
        {
            InitializeComponent();
        }

　　//header是tabItem的标题，typeName是所显示界面的全名（命名空间+类名）

        private void AddTabItem(string header, string typeName)
        {
            if (string.IsNullOrEmpty(header) || string.IsNullOrEmpty(typeName))
            {
                return;
            }

　　　　//获取已经显示的TabItem，将TabItem的header作为检索条件

　　      var list = this.tabControl.Items.Where(w => ((TabItem)w).Header.ToString() == header);

　　　　//如果所点击的窗体已打开，那么显示该窗体，这样避免打开多个同一窗体           

　　　　if (list.Count() > 0)
            {
                ((TabItem)list.First()).Visibility = Visibility.Visible;

                this.tabControl.SelectedItem = list.First();
            }
            else
            {
                TabItem tabItem = new TabItem();

                tabItem.Header = header;

　　　　　　//用发射实例化窗体类
                var tabContent = Activator.CreateInstance(Type.GetType(typeName)) as UserControl;

                tabItem.Content = tabContent;

　　　　　　　　//将实例化的tabItem添加到TabControl
                this.tabControl.Items.Add(tabItem);
                this.tabControl.SelectedItem = tabItem;
            }
        }

        private void DataGrid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

　　　　//Silverlight.Common.View.DataGridDemo是SilverLight学习笔记七DataGrid控件节中的DataGridDemo(DataGrid控件)
            this.AddTabItem("数据", "Silverlight.Common.View.DataGridDemo");
        }

        private void treeView_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

　　　　//SilverLight学习笔记六TreeView控件中的TreeViewSample（TreeView控件）
            this.AddTabItem("树视图", "Silverlight.Common.View.TreeViewSample");
        }

        private void dataForm_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

　　　　//SilverLight学习笔记七DataPager,DataForm控件的DataForm（）
            this.AddTabItem("数据表单", "Silverlight.Common.View.DataFormDemo");
        }
    }
}