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How to create a comma separated string from a list of string in C#?

We can covert a List of string to a comma separated string using built in string.Join extension method.

Example

using System;
using System.Collections.Generic;
					
public class Program
{
	public static void Main()
	{
		List<string> strings = new List<string>{"1","2","testing"};
		string joined = string.Join(", ", strings);
		Console.WriteLine(joined);
	}
}

Output

1, 2, testing

Conclusion

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