I am trying to insert data from my ASP.NET Core MVC application with Entity Framework to my SQL Server database on localhost.

My model class looks like this:

```
public class Auto
{
    public string Motorleistung { get; set; }
    public string Lackierung { get; set; }
    public string Felgen { get; set; }
    public string Sonderleistungen { get; set; }
}

```

I already added the `DbContext` in a new folder (`Services/AutoContext` class):

```
public class AutoContext : DbContext
{
    DbSet<Auto> Autos { get; set; }

    public AutoContext(DbContextOptions<AutoContext> options)
        : base(options)
    {
        Database.EnsureCreated();
    }
}

```

I added this part to the `Startup.cs` file in the `ConfigurateServices` method:

```
public void ConfigureServices(IServiceCollection services)
{
        var connectionString = "Server=localhost;Database=Auto;User Id=sa;Password=YourPassword123";

        services.AddControllersWithViews();
        services.AddDbContext<AutoContext>(o => o.UseSqlServer(connectionString));
}

```

I am trying to use a class extension with a method to insert properties from auto into the DB:

```
public static class AutoContextExtensions
{
    public static void CreateSeedData(this AutoContext context)
    {
        var auto = new List<Auto>()
            {
                new Auto()
                {
                    Motorleistung = "500 PS",
                    Lackierung = "Gelb",
                    Felgen = "Chrome",
                    Sonderleistungen = "Sitzheizung"
                }
            };
        context.AddRange(auto);
        context.SaveChanges();
    }
}

```

I am now trying to call the `CreateSeedData` function from the `Startup.cs` to pass the data into my database like:

```
Projectname.AutoContextExtensions.CreateSeedData();

```

It expects me to give a parameter. What parameter do I have to pass? 
(I extracted the code from a sample)