Use DbContext in ASP .Net Singleton Injected Class

Question

I need to access my database in a Singleton class instantiated in my Startup class. It seems that injecting it directly results in a DbContext that is disposed.

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Answer 1

Simple code for asp.net core

  private readonly IConfiguration _configuration;

     public IdeasController( IConfiguration configuration)
      {
          _configuration = configuration;
      }

var optionsBuilder = new DbContextOptionsBuilder<_YourContext>();         
 optionsBuilder.UseSqlServer(_configuration.GetConnectionString("DefaultConnection"));

   using (var context = new _YourContext(optionsBuilder.Options))          {
      var output = context.Users.Select(x=>x.Name).ToList();   }