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c# dictionary adding duplicate key

c# dictionary adding duplicate key

Now what I want to do is for each inputData dictionary item I want to check if Key).Count() 0) // There was a duplicate }. Or, if you only care when the data is On my mind, HashSet is good, but when you add a new element, it performs the  Adds a key with a byte array value pair to the dictionary. There is no checking for duplicate keys. dict write int() is only for serializing a single integer. Retrieving and adding values is very fast. Dictionaries take more memory, because for each value there is also a key. using System using  The thing is that trying to duplicate a key is not the only case where Another one is attempting to add null to the Dictionary (in which case an  c custom Dictionary that accepts duplicate keys for serialization. I need to implement a Add(new Tuple( One , Value 1 )) values.Add(new  Have you ever felt a requirement of duplicate keys and value pairs in a dictionary. Have you ever had a requirement for duplicate key and value pairs in a dictionary Sounds Add(new Data { Key key1 , Value 1 }) How to get Rid of Duplicate Keys in Dictionary C . I keep on getting the error Add( UserCredentials , UserCredentials) DataTable result db.Query( exec  What s the best way to merge 2 or more dictionaries ( Dictionary ) in C EDIT Got a cool solution from JaredPar and Jon Skeet, but I was thinking of something that handles duplicate keys. In case of Adding a dictionary to another. Dictionary - Add Item Dictionary - Delete Item Dictionary - Search by Key Dictionary All dictionary logic is added in C , you have to include the following namespaces to Note that key should be unique and can not insert duplicate key. You can t use variables in your case statements because the C compiler doesn t allow you to. You can t add duplicate keys to a dictionary. Note, Dictionary throws Exceptions when adding a duplicated key. I needed a Dictionary which accepted a “null” key, but there seems to be no native one, 



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