example of a base repository example

BaseRepository.cs

    public interface IModelClass
    {
        public Guid Id {get; set;}
    }
    

    public class BaseRepository<TEntity, TDto> : IRepository<TEntity, TDto>
        where TEntity : class, IModelClass
        where TDto :class, IModelClass 
    {
        public IEnumerable<TEntity> Set { get; set; }
        public InquiryContext context { get; set; }
        public BaseRepository( InquiryContext context)
        {
            this.context = context;
        }

        public virtual TEntity Add(TEntity entity)
        {
            if(entity.Id == Guid.Empty)
            {
                entity.Id = Guid.NewGuid();
            }
            context.Set<TEntity>().Add(entity);
            context.SaveChanges();
            return entity;
        }

        public virtual TEntity Find(Expression<Func<TEntity, bool>> expression = null)
        {

            if (expression == null)
            {
                expression = (TEntity f) => true;
            }

            return context.Set<TEntity>().FirstOrDefault(expression.Compile());
        }

        public virtual IEnumerable<TEntity> Get(Expression<Func<TEntity, bool>> expression = null)
        {

            if(expression == null)
            {
                expression = (TEntity f) => true;
            }

           return context.Set<TEntity>().Where(expression.Compile()).ToList();
        }

        public virtual TEntity Remove(TEntity entity)
        {
            context.Entry(entity).State = EntityState.Deleted;
            context.SaveChanges();
            return  entity;
        }

        public virtual TEntity Update(TEntity entity)
        {
            context.Entry(entity).State = EntityState.Modified;
            context.SaveChanges();

            return entity;
        }

        public void Dispose()
        {
            if(context != null)
            {
                this.context = null;
            }
        }
    }