MVVM_UI和逻辑分离（事件利用命令替换），并实现模板切换等...

依赖dll：Microsoft.Practices.Prism.dll、Microsoft.Practices.Prism.MefExtensions.dll、System.Windows.Interactivity.dll；demo内已包含，有需要的朋友可以下载！

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;

namespace Demo_MVVM
{
    /// 

    /// App.xaml 的交互逻辑
    /// 

    public partial class App : Application
    {
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2020-03-19 10:26  Demo_MVVM\
     目录           0  2020-03-19 09:52  Demo_MVVM\.vs\
     目录           0  2020-03-19 09:52  Demo_MVVM\.vs\Demo_MVVM\
     目录           0  2020-03-19 09:52  Demo_MVVM\.vs\Demo_MVVM\v16\
     文件      100352  2020-03-19 10:39  Demo_MVVM\.vs\Demo_MVVM\v16\.suo
     文件         187  2020-03-19 09:52  Demo_MVVM\App.config
     文件         372  2020-03-19 09:52  Demo_MVVM\App.xaml
     文件         336  2020-03-19 09:52  Demo_MVVM\App.xaml.cs
     目录           0  2020-03-19 09:55  Demo_MVVM\bin\
     目录           0  2020-03-19 10:02  Demo_MVVM\bin\Debug\
     文件       12800  2020-03-19 10:26  Demo_MVVM\bin\Debug\Demo_MVVM.exe
     文件         187  2020-03-19 09:52  Demo_MVVM\bin\Debug\Demo_MVVM.exe.config
     文件       46592  2020-03-19 10:26  Demo_MVVM\bin\Debug\Demo_MVVM.pdb
     文件      150840  2020-02-11 15:57  Demo_MVVM\bin\Debug\Microsoft.Practices.Prism.dll
     文件       39736  2020-02-11 15:57  Demo_MVVM\bin\Debug\Microsoft.Practices.Prism.MefExtensions.dll
     文件       73216  2020-02-11 15:57  Demo_MVVM\bin\Debug\Microsoft.Practices.Prism.MefExtensions.pdb
     文件       46903  2020-02-11 15:57  Demo_MVVM\bin\Debug\Microsoft.Practices.Prism.MefExtensions.xml
     文件      484864  2020-02-11 15:57  Demo_MVVM\bin\Debug\Microsoft.Practices.Prism.pdb
     文件      385231  2020-02-11 15:57  Demo_MVVM\bin\Debug\Microsoft.Practices.Prism.xml
     文件       39936  2016-04-21 19:42  Demo_MVVM\bin\Debug\System.Windows.Interactivity.dll
     目录           0  2020-03-19 09:55  Demo_MVVM\bin\Release\
     文件        4704  2020-03-19 10:10  Demo_MVVM\Demo_MVVM.csproj
     文件        1122  2020-03-19 09:52  Demo_MVVM\Demo_MVVM.sln
     目录           0  2020-03-19 09:54  Demo_MVVM\lib\
     文件      150840  2020-02-11 15:57  Demo_MVVM\lib\Microsoft.Practices.Prism.dll
     文件       39736  2020-02-11 15:57  Demo_MVVM\lib\Microsoft.Practices.Prism.MefExtensions.dll
     文件       73216  2020-02-11 15:57  Demo_MVVM\lib\Microsoft.Practices.Prism.MefExtensions.pdb
     文件       46903  2020-02-11 15:57  Demo_MVVM\lib\Microsoft.Practices.Prism.MefExtensions.xml
     文件      484864  2020-02-11 15:57  Demo_MVVM\lib\Microsoft.Practices.Prism.pdb
     文件      385231  2020-02-11 15:57  Demo_MVVM\lib\Microsoft.Practices.Prism.xml
     文件       39936  2016-04-21 19:42  Demo_MVVM\lib\System.Windows.Interactivity.dll
............此处省略34个文件信息