How to convert List<string> to string with comma delimiter in C# ?

Published on January 26, 2016 by Senthil Kumar

Filed under C#

Last modified January 26, 2016

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If you need to convert a collection (for example List of string) to string separated with the Comma as delimiter , you can either use the string.join method or aggregate method as shwon below.

How to convert List<string> to string with comma delimiter in C# ?

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Reflection; 
using System.Xml.Linq;

namespace ACCode 
    class Program 
        static void Main(string[] args) 
            List<string> movieNames = new List<string>(); 
            movieNames.Add("Bahubali 2"); 
            // option 1 - using the string.join method 
            var output1 = string.Join(", ", movieNames.ToArray()); 
            // option 2 - using the Lambda expression / aggregate method defined in System.Linq namespace. 
            var output2 = movieNames.Aggregate((a, b) => a + ", " + b); 

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