WPF实战项目三：首页左侧菜单绑定_wpf左菜单

新增文件夹Common-Models，新建菜单类名：MenuBar.cs

    /// <summary>
    /// 系统导航菜单实体类
    /// </summary>
    public class MenuBar : BindableBase//支持动态变更
    {
		private string icon;
		/// <summary>
		/// 菜单图标
		/// </summary>
		public string Icon
		{
			get { return icon; }
			set { icon = value; }
		}
		private string title;
		/// <summary>
		/// 菜单名称
		/// </summary>
		public string Title
		{
			get { return title; }
			set { title = value; }
		}
		private string nameSpace;
		/// <summary>
		/// 菜单命名空间
		/// </summary>
		public string NameSpace
		{
			get { return nameSpace; }
			set { nameSpace = value; }
		}
 
	}

新建Views，ViewModels文件夹，将原来的MainWindows.xaml改成MainView.xaml，移到ViewModels文件夹，在ViewModels文件夹中新建MainViewModel.cs文件：

public class MainViewModel : BindableBase
    {
        public MainViewModel(