Get String from Array in C#

In previous article, I mentioned C# Comments with example (Single or Multi-line) but in this article, I have mentioned how we can get comma-seperated String from int Array or string array in C# with an example.

Get String from Int Array in C#

We can use string.Join() method to convert int array to comma-seperated string in C#, here is the complete C# Console application example

using System;

namespace StringFromArray
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int[] intArray = { 1, 2, 3, 4 , 5};
            var str = String.Join(",", intArray); //will give comma-seperated string
            Console.WriteLine(str);
        }
    }
}

Here is the output

1,2,3,4,5

Using StringBuilder

If you don't want to add any seperator when converting array to string, you can use this option

using System;
using System.Text;

namespace StringFromArray
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int[] intArray = { 1, 2, 3, 4 , 5};

            var builder = new StringBuilder();
            Array.ForEach(intArray, x => builder.Append(x));
            Console.WriteLine(builder.ToString());
        }
    }
}

Output:

12345

Get String from String Array in C#

You can use same methods like string.Join() or StringBuilder or using Linq to get string from string array in C#, here is console application example.

using System;
using System.Linq;
using System.Text;

namespace StringFromArray
{
    internal class Program
    {
        static void Main(string[] args)
        {
            //using string.join
            string[] fruits = { "Apple", "Mango", "Banana", "Grapes" };
            var str = String.Join(",", fruits);
            Console.WriteLine(str);

            //using stringbuilder
            var builder = new StringBuilder();
            Array.ForEach(fruits, x => builder.Append(x+ " "));
            Console.WriteLine(builder.ToString());

            //using linq
            var str2 = fruits.Aggregate("", (s, i) => s + i.ToString()+ " ");
            Console.WriteLine(str2);
        }
    }
}

Output:

Apple,Mango,Banana,Grapes
Apple Mango Banana Grapes
Apple Mango Banana Grapes

In the above code, we have also use Linq(var str2 = fruits.Aggregate("", (s, i) => s + i.ToString()+ " ")) method to convert string array to string in C#.

In linq and stringbuilder method, we are seperating string array using " "(space) instead of comma (",").

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