(二)MVVMLight 关联View和ViewModel

在我们按照(一)中的步骤，安装好MMVLight的环境后，

会多出一个文件夹ViewModel，里面有两个.cs文件MainViewModel.cs和ViewModelLocator.cs

MainViewModel.cs文件：是MainWindow.xaml(这个文件就是View，我们以后再起名字的时候，都是以View结尾)的ViewModel文件。

ViewModelLocator.cs文件：是负责关联View和ViewModel的cs文件。在我们的项目中，已经把ViewModelLocator从ViewModel文件夹中拿出来了，把它放到资源文件夹中。

(二)MVVMLight 关联View和ViewModel

最原始ViewModelLocator.cs文件示例：

/*
  In App.xaml:
  <Application.Resources>
      <vm:ViewModelLocator xmlns:vm="clr-namespace:MVVM"
                           x:Key="Locator" />
  </Application.Resources>
  
  In the View:
  DataContext="{Binding Source={StaticResource Locator}, Path=ViewModelName}"

  You can also use Blend to do all this with the tool's support.
  See http://www.galasoft.ch/mvvm
*/

using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Ioc;
using Microsoft.Practices.ServiceLocation;

namespace MVVM.ViewModel
{
    /// <summary>
    /// This class contains static references to all the view models in the
    /// application and provides an entry point for the bindings.
    /// </summary>
    public class ViewModelLocator
    {
        /// <summary>
        /// Initializes a new instance of the ViewModelLocator class.
        /// </summary>
        public ViewModelLocator()
        {
            ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);

            ////if (ViewModelBase.IsInDesignModeStatic)
            ////{
            ////    // Create design time view services and models
            ////    SimpleIoc.Default.Register<IDataService, DesignDataService>();
            ////}
            ////else
            ////{
            ////    // Create run time view services and models
            ////    SimpleIoc.Default.Register<IDataService, DataService>();
            ////}

            SimpleIoc.Default.Register<MainViewModel>();
        }

        public MainViewModel Main
        {
            get
            {
                return ServiceLocator.Current.GetInstance<MainViewModel>();
            }
        }

        
        public static void Cleanup()
        {
            // TODO Clear the ViewModels
        }
    }
}

View Code