How to mark a NonNullable reference property as safe? [duplicate]

Question

I have an entity which I use in my EntityFramework model.

public class Entity
{
    public int Id { get; set; }

    public string Value { get; set; }
}

After enabling nullable reference types compiler gives me a warning:

Warning CS8618  Non-nullable property 'Value' is uninitialized.

I know that this property is not nullable in the database and its safe.

Is there any way to mark this property as safe other than disabling the warnings in the class with #pragma warning disable?

My first instinct was trying to mark the type as safe with ! like this

public string! Value { get; set; }

but that didn't work.

Answer 1

See an answer to my similar question. If you ensure by some business rules the non-nullability (validation in my case), it is better to tell to consumers of your class that some property will be never null by using the non-nullable property and handle compiler warning by using this construct.

public class Entity
{
   public int Id { get; set; } = null!;
   public string Value { get; set; } = null!;
}