C# 如何映射m-to-m关系？

有两个表Products和Category，它们由ProductCategory链接

我有一个产品存储库，我想在其中显示类别

public async Task<IList<Product>> GetAllWithCategoryAsync(int offset, int limit,
    string searchProperty, string searchValue,
    string orderBy, bool desc)
{
    return await _context.Set<Product>()
        .Include(property => property.ProductCategories)
        .ThenInclude(property => property.Category)
        .ApplyFiltering(searchProperty, searchValue)
        .ApplyOrdering(orderBy, desc)
        .Skip(offset)
        .Take(limit)
        .ToListAsync();
}

类别：

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

        public string Label { get; set; }

        public string Thumbnail { get; set; }
    }

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

        public string Label { get; set; }

        public double Price { get; set; }

        public string Description { get; set; }

        public string Thumbnail { get; set; }

        public int CategoryId { get; set; }
    
        public string CategoryLabel { get; set; }
    }

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

    public string Label { get; set; }

    public double Price { get; set; }

    public string Description { get; set; }

    public string Thumbnail { get; set; }
}

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

        public string Label { get; set; }

        public string Thumbnail { get; set; }
    }

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

        public string Label { get; set; }

        public double Price { get; set; }

        public string Description { get; set; }

        public string Thumbnail { get; set; }

        public int CategoryId { get; set; }
    
        public string CategoryLabel { get; set; }
    }