by Sai gowtham

How to convert array of integers to comma-separated string in C#

We can convert an array of integers to a comma-separated string by using the String.split() method in C#.

Syntax: String.split(delimiter, array)

This following example converts the prices array to a comma-separated string.

using System;
class Convert {
  static void Main() {
     int[] prices = {10, 20, 30, 40};
      var str = string.Join(",", prices);
      Console.WriteLine(str);
  }
}

Output:

10,20,30,40

Similarly, we can also use the string.join() method to convert it.

using System;
using System.Linq;

class Convert {
  static void Main() {
     int[] prices = {10, 20, 30, 40};
      var str = string.Join(",", prices);
      Console.WriteLine(str);
  }
}

or you can use the Linq Aggregate() method like this.

using System;
using System.Linq;

class Convert {
  static void Main() {
     int[] prices = {10, 20, 30, 40};
      var str = prices.Select(a => a.ToString()).Aggregate((i, j) => i + "," + j);;
      Console.WriteLine(str);
  }
}

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