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9 lut 2010 · This is because for an OrderedDictionary the index is the key; if you want the actual key then you need to track it yourself. Probably the most straightforward way is to copy the keys to an indexable collection: // dict is OrderedDictionary. object[] keys = new object[dict.Keys.Count]; dict.Keys.CopyTo(keys, 0);
If you need to extract an element key based on an index, this function can be used: public string getCard(int random) { return Karta._dict.ElementAt(random).Key; } If you need to extract the Key where the element value is equal to the integer generated randomly, you can use the following function:
13 lip 2022 · In this article, we’re going to explore accessing Dictionary items by index in C# and its performance considerations. The Dictionary<TKey,TValue> generic class provides the ability to map keys to values.
int myIndex = 3; Console::WriteLine( "The key at index {0} is {1}.", myIndex, mySL->GetKey( myIndex ) ); Console::WriteLine( "The value at index {0} is {1}.", myIndex, mySL->GetByIndex( myIndex ) ); // Gets the list of keys and the list of values.
How to get item by index from a Dictionary in C#. Net framework dictionary represents a collection of keys and values. each element of dictionary contain a key and value pair. so to get the dictionary key by index, first we need to find the specified element by index and then get this element’s key.
First, let's look at how we can do this. ElementAt Method. ElementAt will return the dictionary element at that position in the order in which it was inserted into the dictionary. This example has 4 entries and I can select each entry by ElementAt in the reverse order. See below.
23 lip 2024 · How to Get Key by Value in C#. When working with dictionaries in C#, you might encounter situations where you need to retrieve a key based on its value. This task can be efficiently achieved using LINQ queries or by iterating through the dictionary entries.
