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plurals

POOften used LINQ returned from method
primarykey
Id
19229129
data
AcceptedAnswerId
19229408
AnswerCount
2
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2013-10-07T15:49:20.200
FavoriteCount
1
LastActivityDate
2013-10-08T10:02:11.747
LastEditDate
2017-05-23T10:25:13.560
LastEditorUserId
-1
OwnerUserId
2114664
ParentId
0
PostTypeId
1
Score
2
ViewCount
150
LastEditorDisplayName
text
Body
I have 1 LINQ which used so much. I try create the method which return this LINQ like: <pre><code> public static System.Linq.Expressions.Expression<Func<MyEntity, bool>> GetFilteredEntity() { return x => true/*Some condition*/; } public static Func<MyEntity, bool> GetFilteredEntity() { return x => true/*Some condition*/; } </code></pre> And use this like <pre><code> db.MyEntities.Where(GetFilteredEntity()); </code></pre> is successfull, But! I need use it like <pre><code> db.ParentEntities.Where(entity => entity.MyEntities.Where(GetFilteredEntity())); </code></pre> This code compiled too, but every time when i use it, i got the Error: <pre><code>System.InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first. </code></pre> ,even: <pre><code>db.ParentEntities.Where(entity => entity.MyEntities.Where(GetFilteredEntity())).ToList(); </code></pre> throw this Exception too. But, <pre><code>db.ParentEntities.Where(entity => entity.MyEntities.Where(x => true/*Some condition*/)) </code></pre> still works fine! So why it happend, and have some way to get round this? Final working code <code>public static Expression<Func<MyEntity, bool>> GetFilteredEntity() { return x => true/*Some condition*/; }</code> and <code>var expression = GetFilteredEntity();</code> <code>db.ParentEntities.Where(entity => entity.MyEntities.AsQueryable().Where(expression ));</code> Also <code>.AsQueryable()</code> thanks to <a href="https://stackoverflow.com/questions/1711448/passing-func-as-parameter-in-linq-to-entities-and-internal-net-framework-data">Passing func as parameter in Linq to Entities and 'Internal .NET Framework Data Provider error 1025' error</a>
Tags
<c#><linq>
Title
Often used LINQ returned from method
singulars
PostAcceptedAnswerId
1. PO
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 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USCommunity
UserOwnerUserId
1. USAnton
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
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 PostTypePostTypeId
 PTAnswer
2. PO
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 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
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 PostPostId
 POOften used LINQ returned from method
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
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 PostPostId
 POOften used LINQ returned from method
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
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 PostPostId
 POOften used LINQ returned from method
 UserUserId
 USAnton
 VoteTypeVoteTypeId
 VTFavorite
CommentsPostId
1. COUnrelated question: What is this supposed to do? `db.ParentEntities.Where(entity => entity.MyEntities.Where(GetFilteredEntity()));` Does `ParentEntity` derive from `MyEntity`?
 singulars
 PostPostId
 POOften used LINQ returned from method
 UserUserId
 USKhan
2. CONope =) It's Just taking `ParentEntity` where filtered count of `MyEntity` bigger than... (Also it Question and Answers)
 singulars
 PostPostId
 POOften used LINQ returned from method
 UserUserId
 USAnton

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