Unable to Create object of type 'AppDbContext'

[rswetnam]

Hi Gill - after pointing to my local db - I get the following message when running update-database in the package maanager:
Unable to create an object of type 'AppDbContext'. Add an implementation of 'IDesignTimeDbContextFactory' to the project,

[djjohnson-net]

I have the same issue. Does anyone have a fix yet?

Here is the fix I used. Just add this class to the project and then use the Package Manager Console "update-database"

using BethanysPieShop.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;
using Microsoft.Extensions.Configuration;
using System.IO;

namespace BethanysPieShop
{
public class DesignTimeDbContextFactory : IDesignTimeDbContextFactory
{
public AppDbContext CreateDbContext(string[] args)
{
IConfigurationRoot configuration = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json")
.Build();
var builder = new DbContextOptionsBuilder();
var connectionString = configuration.GetConnectionString("DefaultConnection");
builder.UseSqlServer(connectionString);
return new AppDbContext(builder.Options);
}
}
}

[Smitsons]

Unable to create an object of type 'AppDbContext'.
Add an implementation of 'IDesignTimeDbContextFactory' to the project

Gill, Any update for this error in Package Manager Console ?
Please, don't be silent. I need your solution.

[shamil-sadigov]

Here is solution.

1. First, modify your DbInitializer.Seed Method in a way as follows

2. Make this changes to Program Static void Main Method, and Migrations should work

[mananchoksi007]

Thanks for the solution. Its working perfectly.