VCommonCoreExample/VCommonCoreExample/EntityFrameworkCore/ExampleDbContextFactory.cs

using System.Diagnostics;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;
using Microsoft.Extensions.Configuration;
using VCommonCoreExample.Configuration;

namespace VCommonCoreExample.EntityFrameworkCore
{
    /* This class is needed to run "dotnet ef ..." commands from command line on development. Not used anywhere else */

    public class ExampleDbContextFactory : IDesignTimeDbContextFactory<ExampleDbContext>
    {
        public ExampleDbContext CreateDbContext(string[] args)
        {
            Debugger.Launch();
            Debugger.Break();

            var builder = new DbContextOptionsBuilder<ExampleDbContext>();

            var configuration = AppConfigurations.Get(WebContentDirectoryFinder.CalculateContentRootFolder());

            ExampleDbContextConfig.Configure(builder, configuration.GetConnectionString(ProjectConst.ConnectionStringName));

            return new ExampleDbContext(builder.Options);
        }
    }
}