many-to-many intersection query with LINQ

Question

I have the following classes :-

Blog.cs
public int BlogId { get; set; }
public string BlogTitle { get; set; }
public virtual ICollection<BlogTag> BlogTags { get; set; }

and

BlogTag.cs
public int BlogTagId { get; set; }
public string BlogTagName { get; set; }
public Blog Blog { get; set; }
public int BlogId { get; set; }

Now I need to get a list of Blogs that contain the BlogTagName, so I tried the following but it is not working properly:-

 var tags = viewModel.BlogViewModel.BlogList.Where(post => post.BlogTags.All(tag => tag.BlogTagName.Contains(tagName)));

How can I get this working?

Thanks

Answer 1

replace All by Any sould do the trick

This will check if "at least one" blockTag of the blog contains your tagName.

With All , all of the blockTags from a blog should contain your tagName.