How to Remove Element from Array based on a Condition in C# - Step by Step Examples

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How to Remove Element from Array based on a Condition in C# ?

Answer

In C#, you can use the `Where` LINQ method to filter elements from an array based on a condition.

✐ Examples

1 Remove Numbers Greater Than 5

In this example,

We create an array named `numbers` with elements including those to be removed based on the condition.
We use the LINQ `Where` method with a condition to create a new array excluding numbers greater than 5.
Finally, we get a new array with numbers not greater than 5.

C# Program

using System;
using System.Linq;

class Program
{
    static void Main()
    {
        int[] numbers = { 1, 6, 2, 7, 3, 8, 4, 9, 5 };
        var filteredNumbers = numbers.Where(num => num <= 5).ToArray();
        Console.WriteLine("Array after filtering: " + string.Join(", ", filteredNumbers));
    }
}

Output

Array after filtering: 1, 2, 3, 4, 5

2 Remove Strings Starting with 'A'

In this example,

We create an array named `words` with elements including those to be removed based on the condition.
We use the LINQ `Where` method with a condition to create a new array excluding strings starting with 'A'.
Finally, we get a new array with strings not starting with 'A'.

C# Program

using System;
using System.Linq;

class Program
{
    static void Main()
    {
        string[] words = { "Apple", "Banana", "Apricot", "Grape", "Mango" };
        var filteredWords = words.Where(word => !word.StartsWith("A", StringComparison.OrdinalIgnoreCase)).ToArray();
        Console.WriteLine("Array after filtering: " + string.Join(", ", filteredWords));
    }
}

Output

Array after filtering: Banana, Grape, Mango

Summary

In this tutorial, we learned How to Remove Element from Array based on a Condition in C# language with well detailed examples.

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How to Remove Element from Array based on a Condition in C# - Step by Step Examples

How to Remove Element from Array based on a Condition in C# ?

Answer

✐ Examples

1 Remove Numbers Greater Than 5

C# Program

Output

2 Remove Strings Starting with 'A'

C# Program

Output

Summary

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