How Can I Efficiently Convert a String Array to an Integer Array Using LINQ?

LINQ-Based String to Integer Array Conversion

Need to transform a string array holding integer representations into a true integer array? LINQ offers streamlined solutions.

Here's an example:

<code class="language-csharp">string[] strArray = { "1", "2", "3", "4" };</code>

These LINQ methods efficiently convert strArray to an integer array:

Method 1: Array.ConvertAll

This approach uses the Array.ConvertAll method for a concise conversion:

<code class="language-csharp">int[] intArray = Array.ConvertAll(strArray, s => int.Parse(s));</code>

The lambda expression s => int.Parse(s) applies int.Parse to each string element, converting it to an integer.

Method 2: Select and ToArray

Alternatively, leverage LINQ's Select and ToArray methods:

<code class="language-csharp">int[] intArray = strArray.Select(int.Parse).ToArray();</code>

Select transforms each string into an integer, and ToArray creates the final integer array. Both methods achieve the same result with equal efficiency. Choose the method that best suits your coding style.

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