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3 paź 2014 · var firstElement = myList[0]; var secondElement = myList[1]; Starting with C# 8.0 you can use Index and Range classes for accessing elements. They provides accessing from the end of sequence or just access a specific part of sequence: var lastElement = myList[^1]; // Using Index.
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 · When we want to access an element using the index, we are going to use the ElementAt method: var element = capitals.ElementAt(2); The ElementAt method provides us array-like access capability to key-value pairs of Dictionary<string, string>. As with C# arrays, the index of the first element is 0.
23 sie 2024 · Declaring an indexer will automatically generate a property named Item on the object. The Item property is not directly accessible from the instance member access expression. Additionally, if you add your own Item property to an object with an indexer, you'll get a CS0102 compiler error.
13 lip 2024 · The Object reference not set to an instance of an object error is a common stumbling block for C# developers, but understanding its cause and knowing how to prevent and fix it can save you a lot of headaches.
Examples. C# get items from List: List<int> numbers = new List<int> { 1, 2, 3, 4, 5 }; int specificNumber = numbers [2]; // Retrieves the item at index 2. Retrieve elements from List in C#: List<string> colors = new List<string> { "Red", "Green", "Blue" }; string firstColor = colors [0]; // Retrieves the first item in the list.
The first element in a collection is generally located at index 0. The last element is at index n-1, where n is the Size of the collection (the number of elements it contains). If you attempt to use a negative number as an index, or a number that is larger than Size-1, you're going to get an error.
