StackOverflow2013

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plurals

PO
primarykey
Id
16384307
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-05-05T12:01:39.147
FavoriteCount
0
LastActivityDate
2013-05-05T12:42:48.400
LastEditDate
2013-05-05T12:42:48.400
LastEditorUserId
2336466
OwnerUserId
2336466
ParentId
16383945
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
Entity: <pre><code>public class Character { public string Name; } </code></pre> Comparer <pre><code>public class CharacterComparer : IEqualityComparer<Character> { public bool Equals(Character x, Character y) { if (ReferenceEquals(x, y)) { return true; } if (ReferenceEquals(x, null) || ReferenceEquals(y, null)) { return false; } // Ignore case and culture return string.Compare(x.Name, y.Name, StringComparison.InvariantCultureIgnoreCase) == 0; } public int GetHashCode(Character obj) { if (obj == null || string.IsNullOrEmpty(obj.Name)) { return 0; } return obj.Name.GetHashCode(); } } </code></pre> use HashSet. <pre><code> HashSet<Character> characters1 = new HashSet<Character>(new CharacterComparer()); characters1.Add(new Character {Name = "Alex"}); characters1.Add(new Character { Name = "Peter" }); characters1.Add(new Character { Name = "John" }); HashSet<Character> characters2 = new HashSet<Character>(new CharacterComparer()); characters2.Add(new Character { Name = "John" }); characters2.Add(new Character { Name = "Jenny" }); characters2.IntersectWith(characters1); Console.WriteLine("Existing count: " + characters2.Count); </code></pre> Output: <pre><code>Existing count: 1 </code></pre> EDIT 1 And do not add new item in session's list: <pre><code> listOfCharacters.Add(new Character() { name = txtName.Text}); </code></pre> You've already added new Character to list and then tries to find it in the same list. You should use separate lists. Session's list (existing Characters) and new List with Characters to be added. add <pre><code>using System.Linq; </code></pre> and iterate through new list to search existing users in Session's list <pre><code>// characters2 = created new list with Characters to be added foreach (var item in characters2) { Character character = item; // characters1 = obtained from sessions bool contains = characters1.Contains(character, new CharacterComparer()); if (contains) { Console.WriteLine("Character {0} exists", character.Name); } } </code></pre>
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1. This table or related slice is empty.
PostParentId
1. POCheck if array already exists in Session
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 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USUzzy
UserOwnerUserId
1. USUzzy
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1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
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PostsAcceptedAnswerId
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