I have a table that looks like this :-
CategoryId | QuestionId
-----------------------
1 | 2
1 | 3
3 | 2
4 | 3
I need to pull out all of the Questions that are not in use by a specific category. so for eg, CategoryID = 1.
The result should be that there are no questions to display.
Anyone know the best way to do this? so far i've not got anywhere with it.
EDIT **
public partial class FAQ
{
public FAQ()
{
this.FAQCategoriesFAQs = new HashSet<FAQCategoriesFAQ>();
}
public int Id { get; set; }
public string Question { get; set; }
public string Answer { get; set; }
public bool IsVisible { get; set; }
public Nullable<System.DateTime> DateLastUpdated { get; set; }
public System.DateTime DateCreated { get; set; }
public bool IsDeleted { get; set; }
public virtual ICollection<FAQCategoriesFAQ> FAQCategoriesFAQs { get; set; }
}
public partial class FAQCategory
{
public FAQCategory()
{
this.FAQCategoriesFAQs = new HashSet<FAQCategoriesFAQ>();
}
public int Id { get; set; }
public string Name { get; set; }
public int DomainId { get; set; }
public Nullable<System.DateTime> DateLastUpdated { get; set; }
public System.DateTime DateCreated { get; set; }
public bool IsDeleted { get; set; }
public int SortOrder { get; set; }
public virtual Domain Domain { get; set; }
public virtual ICollection<FAQCategoriesFAQ> FAQCategoriesFAQs { get; set; }
}
public partial class FAQCategoriesFAQ
{
public int FAQCategoryId { get; set; }
public int FAQId { get; set; }
public int SortOrder { get; set; }
public virtual FAQCategory FAQCategory { get; set; }
public virtual FAQ FAQ { get; set; }
}
If you have navigation property for categories in Question
entity:
db.Questions.Where(q => !q.Categories.Any(c => c.Id == id))
UPDATE Thus your junction table differs a little bit from your original question :)
db.FAQs.Where(q => !q.FAQCategoriesFAQs.Any(qc => qc.FAQCategoryId == id))
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