Can i update a non-nullable value in an Entity by using Update method from Entity Framework?

Question

I have already created an entity but want to update a value of a non-nullable column. I use the Update method from EF to try this but doesnt work. Is it possible to update a non-nullable value?

    public void Update(T entity)
    {
        _context.Set<T>().Update(entity);
    }

Answer 1

just add SaveChanges()

 public void Update(T entity)
{
    _context.Set<T>().Update(entity);
    _context.SaveChanges();
}