Check out example codes for "combine array c# with unique value". It will help you in understanding the concepts better.

Code Example 1

using System;
using System.Linq;
					
public class Program
{
	public static void Main()
	{
		string[] array1 = { "Ice", "Box", "Fox", "Glass", "Dog" };
		string[] array2 = { "Pig", "Box", "Cra", "Ice" };
 
		var result = array1.Union(array2).ToArray();
		Array.ForEach(result, x => Console.WriteLine(x));
	}
}

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