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Written by: Stanko Milosev

Category: C#

Published: 27 February 2021

Hits: 1909

• core

Mostly I was using this web site for my example.

In my case I have created the project C:\projects\ReverseGeoCoding, then open PowerShell, and first, if you don't have EF tool installed, execute following:

dotnet tool install --global dotnet-ef

Go to project folder, like cd "C:\projects\ReverseGeoCoding", and add packages "Microsoft.EntityFrameworkCore.Design" and "MySql.EntityFrameworkCore" like:

dotnet add package Microsoft.EntityFrameworkCore.Design
dotnet add package MySql.EntityFrameworkCore --version 5.0.0-m8.0.23

Now scaffold:

dotnet ef dbcontext scaffold "SERVER=localhost;DATABASE=myDb;UID=uid;PASSWORD=pass;" MySql.EntityFrameworkCore -o C:\projects\ReverseGeoCoding -f

Now, I have made my own console applicatcation for scaffolding:

using System.Diagnostics;
using System.Threading;

namespace MySQLScaffold
{
  class Program
  {
    static void Main(string[] args)
    {
      // Use ProcessStartInfo class
      ProcessStartInfo startInfo = new ProcessStartInfo
      {
        CreateNoWindow = false,
        UseShellExecute = false,
        FileName = "dotnet",
        WindowStyle = ProcessWindowStyle.Hidden,
        Arguments = "ef dbcontext scaffold"
                    + " \"SERVER=localhost;DATABASE=myDb;UID=uid;PASSWORD=pass;\""
                    + " MySql.EntityFrameworkCore -o"
                    + " C:\\projects\\ReverseGeoCoding"
                    + " -f -v"
                    + " -p C:\\projects\\ReverseGeoCoding"
      };

      Mutex myMutex;
      if (!Mutex.TryOpenExisting("testMutex", out myMutex))
      {
        myMutex = new Mutex(true, "testMutex");
        myMutex.WaitOne();
        try
        {
          // Start the process with the info we specified.
          // Call WaitForExit and then the using statement will close.
          using (Process exeProcess = Process.Start(startInfo))
          {
            exeProcess?.WaitForExit();
          }
        }
        catch
        {
          // Log error.
        }
        finally
        {
          myMutex.ReleaseMutex();
        }
      }

      //Console.WriteLine("Press any key");
      //Console.ReadKey();
    }
  }
}

Then I have created Class library application "EFCore", where in prebuild event I have added

C:\projects\MySQLScaffold\MySQLScaffold\bin\Debug\netcoreapp3.1\MySQLScaffold.exe

I had to add package "Microsoft.EntityFrameworkCore.Design", and I had to reference my "ReverseGeoCoding" project, here is how my "EFCore.csproj" look like:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
  </PropertyGroup>

  <Target Name="PreBuild" BeforeTargets="PreBuildEvent">
    <Exec Command="C:\projects\MySQLScaffold\MySQLScaffold\bin\Debug\netcoreapp3.1\MySQLScaffold.exe" />
  </Target>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="5.0.3">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\..\ReverseGeoCoding\ReverseGeoCoding.csproj" />
  </ItemGroup>

</Project>