How to sort the generic SortedList in descending order?

Question

Ashutosh Kumar Verma · Answer

Sorting SortedList into Descending Order
The SortedListandlt;TKey, TValue> class in C# does not have a built-in method to sort its elements directly in
descending order. However, you can do this by creating a new list or collection and sorting the items from the original SortedList in order with it.
Example-and 
Here a basic example to sort the SortedList into descending order in c#,
using System;
using System.Collections.Generic;
class Program
{
   static void Main()
   {
       // Creating a SortedList
       SortedListandlt;int, string> sortedList = new SortedListandlt;int, string>();
       // Add some items to the SortedList
       sortedList.Add(3, "Three");
       sortedList.Add(1, "One");
       sortedList.Add(2, "Two");
       // Sort the items in descending order
       Listandlt;KeyValuePairandlt;int, string>> descendingList = new Listandlt;KeyValuePairandlt;int, string>>(sortedList);
       descendingList.Sort((x, y) => y.Key.CompareTo(x.Key));
       // Print the sorted items
       Console.WriteLine("Descending Order");
       foreach (var item in descendingList)
       {
           Console.WriteLine("Key: {0}, Values: {1}", item.Key, item.Value);
       }
       // also sort the items in ascending order
       Listandlt;KeyValuePairandlt;int, string>> ascendingList = new Listandlt;KeyValuePairandlt;int, string>>(sortedList);
       ascendingList.Sort((x, y) => x.Key.CompareTo(y.Key));
       // Print the ascending order items
       Console.WriteLine("
Ascending Order");
       foreach (var item in ascendingList)
       {
           Console.WriteLine("Key: {0}, Values: {1}",item.Key, item.Value);
       }
       Console.ReadLine();
   }
}
In the above exaple-
We first create a sortedList called SortedListandlt;int, string> and add some items to it.
We then create a Listandlt;KeyValuePairandlt;int, string>> named descendingList for Descending order and
ascendingList for Ascending order, and initialize it with the items from the original
SortedList.
We use the Sort method of the List class to sort the items in 
descending order based on the key. We provide a custom comparison function using a
lambda expression.
Finally, we print the orders.
Output-
Descending Order
Key: 3, Values: Three
Key: 2, Values: Two
Key: 1, Values: One
Ascending Order
Key: 1, Values: One
Key: 2, Values: Two
Key: 3, Values: Three
and 
This will print the items from the original SortedList in descending order of their key.
Also, Read: How to write file using StreamWriter in C#?

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How to sort the generic SortedList in descending order?

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Sorting SortedList into Descending Order

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