Dictionary can be used to store key/ value pairs of the same type. Key/value pairs can be stored in the same or different way. What is difference between dictionary and Hashtable in C#? The dictionary can be used to store lists or sets. There is no support for duplicate keys in the dictionaries. The dictionary only allows you to store the same types of elements. ![]() If you try to use a duplicate key it will be thrown out. The key has to be unique in the dictionary. The superclass of all possible held data types should be used to define the dictionary. There is only one type of object that can be put in a dictionary. See also How Many Editions Of Scrabble Dictionary Are There? Can dictionary have multiple data types? If you don’t want to retain the original order then set will remove all duplicate. The keys are also taken out in the process of removing a duplicate value. How do I remove duplicates from a dictionary?Ī loop or dictionary comprehension can be used to remove duplicate entries from the dictionary. Is there a way to use Dictionary string, List string? To create a new entry in the dictionary, you need to check if the key exists and add the line in the list value for it. It’s not possible to add a duplicate key to a dictionary. How do you add duplicates to a dictionary? Trying to use the same key again will cause the previous value to be erased. It’s not possible to have two keys that have the same value. ![]() Each key in a dictionary should not be the same. A single key can be matched with more than one value. Can C# dictionary have different data types?. ![]()
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