EFCore Not recognizing Database Provider

Question

I have a .Net Core WebApplication Project in which the Context Class is in a Class Library. If I hard code the connection string in the OnConfiguring(DbContextOptionsBuilder

Answer 1

I was having the same issue when I when providing options along with dbcontext while adding dbcontext to services like:-

services.AddDbContext(options => 
options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

then I added dbcontext without options like below and it fixed the problem for me

services.AddDbContext();

also I had to add OnConfiguring method to dbcontext class so the context can access the connection string:-

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
    optionsBuilder.UseSqlServer("Server=(localdb)\\mssqllocaldb;Database=IdenDB;Trusted_Connection=True;MultipleActiveResultSets=true");
}

I am not sure if this is the right way of doing things since I just started with core but here is an answer which explains this issue in a bit more detail