- 完成TDengine的连接
- 在`DD.Electricity.Cloud.PrPersistence`项目中生成数据库

```
- appsettings.json中配置连接字符串
- GlobalSettings.cs 把appsettings.json中的连接key放这里
- DesignTimeDbContextFactoryBase中Create方法中的配置
- dotnet ef database update -c ProjectDbContext
```

- 反向工程到局域网项目

```
- 局域网增加类库：TaiHe.Electricity.Cloud

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.2.4" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.2.4" />
    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.2.4" />
    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="2.2.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.2.0" />
    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="2.2.0" />
    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql.Design" Version="1.1.2" />
  </ItemGroup>

- dotnet ef dbcontext scaffold "server=47.103.61.198;port=3306;database=dingding_zhanting;user=root;password=TecheDing2019;SslMode=none" Pomelo.EntityFrameworkCore.MySql --schema database=dingding_zhanting -c CloudContext -o Cloud
- 网站项目引用类库：TaiHe.Electricity.Cloud，发现类库的版本高了，类库需要降低版本。不仅仅是组件版本问题。以下可以：

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.0.3" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.0.3" />
    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="2.0.0.1" />
    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql.Design" Version="1.1.0" />
  </ItemGroup>
- appsettings.json配置连接字符串
- Startup.cs配置上下文

```

- DD.Electricity.Cloud创建集团和项目

```
groupid:
projectid:
connkey:dingding_zhanting
```

- 局域网appsettings.json配置