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Sort KeyValuePairs in C#
Use the Sort method to sort the KeyValuePairs collection.
Firstly, set the collection −
var myList = new List<KeyValuePair<int, int>>(); // adding elements myList.Add(new KeyValuePair<int, int>(1, 20)); myList.Add(new KeyValuePair<int, int>(2, 15)); myList.Add(new KeyValuePair<int, int>(3, 35)); myList.Add(new KeyValuePair<int, int>(4, 50)); myList.Add(new KeyValuePair<int, int>(5, 25));
To sort, use the Sort() method. With that, we have used the CompareTo() method to compare values −
myList.Sort((x, y) => (y.Value.CompareTo(x.Value)));
The following is the complete code −
Example
using System;
using System.Collections.Generic;
class Program {
static void Main() {
var myList = new List<KeyValuePair<int, int>>();
// adding elements
myList.Add(new KeyValuePair<int, int>(1, 20));
myList.Add(new KeyValuePair<int, int>(2, 15));
myList.Add(new KeyValuePair<int, int>(3, 35));
myList.Add(new KeyValuePair<int, int>(4, 50));
myList.Add(new KeyValuePair<int, int>(5, 25));
Console.WriteLine("Unsorted List...");
foreach (var val in myList) {
Console.WriteLine(val);
}
// Sort Value
myList.Sort((x, y) => (y.Value.CompareTo(x.Value)));
Console.WriteLine("Sorted List...");
foreach (var val in myList) {
Console.WriteLine(val);
}
}
}Output
Unsorted List... [1, 20] [2, 15] [3, 35] [4, 50] [5, 25] Sorted List... [4, 50] [3, 35] [5, 25] [1, 20] [2, 15]
Updated on: 22-Jun-2020
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