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如何將多行插入EF查找表而不會收到此錯誤:New transaction is not allowed because there are other threads running in the session
?實體框架4 CTP 5 POCO - 將多行插入查找表?
我有一個PostTags查找表,其中我有很多標籤可以從一個帖子,這是我目前有我的更新方法,錯誤似乎來自foreach
循環插入標籤(我正在使用在這個崗位工作單元,POCO的,EF 4 cpt5存儲庫模式 - Entity Framework 4 CTP 4/CTP 5 Generic Repository Pattern and Unit Testable):
if (ModelState.IsValid)
{
post.FriendlyUrl = Utils.ToFriendlyUrl(post.PostedDate.ToString("yyyy/MM/dd") + "/" + Utils.RemoveAccents(post.Title));
var tags = post.TagsString.TrimEnd(' ', ',').Split(',').ToList();
var updatePost = Mapper.Map<PostModel, Post>(post);
var postTags = new List<int>();
foreach (var tag in tags)
{
postTags.Add(_tag.CheckExistingTag(tag.Trim()));
}
_post.UpdatePost(updatePost);
_unitOfWork.Commit();
// Remove all existing tags associated with this post
_postTag.RemoveAllTagsInPost(updatePost.Id);
// Insert to the PostTagLookup table the new Tags that associates with this Post
foreach (var tagId in postTags)
{
var newPostTag = new PostTagLookup { PostId = updatePost.Id, TagId = tagId };
_postTag.Add(newPostTag);
_unitOfWork.Commit();
}
}
感謝。
保羅嗨,我是有問題多到許多與關係EF,所以我決定去查找表。這裏是我關於多對多以及我的問題的原始問題:http://stackoverflow.com/questions/4571188/entity-framework-4-many-to-many-insertion和http://stackoverflow.com/questions/4589258/entity-framework-4-ctp-5-poco-many-to-many-lookup-table。 – Saxman 2011-01-30 17:11:04