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Asp.net – array in ascending and descending order in C# using LINQ

In this i have write two linq queries

  1. For Ascending order
  2. For Descending order

i have done this in one way can you guy’s suggest me to the another method for knowledge if exists.

Here is the code

// Specify the data source.
int [] scores = [79,92,98,2];

// Define the query expression for ascending order.
IEnumerable<int> scoreQuery = from score in scores orderby score ascending select score;

// Define the query expression for descending order.
var scoreQueryDesc = from score in scores orderby score descending select score;

// Execute the ascending query 
foreach (var i in scoreQuery)
{
        Console.Write(i + " ");
}

// This Console is for Next line.
Console.WriteLine();

// Execute the descending query 
foreach (var i in scoreQueryDesc)
{
        Console.Write(i + " ");
}

In the above code i have define value in two type’s

  • IEnumerable scoreQuery
  • var scoreQueryDesc

Please suggest me there is any other approach to do this

Tags:

2

Answers


  1. 0

    If you want to conditionally sort ascending or descending, you could use this extension:

    public static IOrderedEnumerable<TSource> OrderByWithDirection<TSource, TKey>(
    this IEnumerable<TSource> sequence,
    Func<TSource, TKey> keySelector,
    bool descending)
{
    return descending
        ? sequence.OrderByDescending(keySelector)
        : sequence.OrderBy(keySelector);
}

    Then your code becomes simple:

    bool descending = true; // can be set at runtime
IEnumerable<int> scoreQuery = scores.OrderByWithDirection(i => i, descending);
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  2. 0

    You can now write this:

    int[] scores = [79, 92, 98, 2];

IEnumerable<int> scoreQuery = scores.Order();

var scoreQueryDesc = scores.OrderDescending();
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