private void Button_Click_1(object sender, RoutedEventArgs e)
{
VMStudent vm = new VMStudent();
Student stu = new Student();
stu.Name = "zhouqi";
stu.PhotoBitmapImage1 = "E:\\新建文件夹\\5.png";
vm.Students2.Add(stu);
vm.Students3.Source = vm.Students2;
layoutRoot.DataContext = vm.Students3;
//Window2 w2 = new Window2();
//w2.ShowDialog();
}
public Window2()
{
InitializeComponent();
VMStudent vm = new VMStudent();
layoutRoot.DataContext = vm.Students2;
}