Convert List to string in C# (Comma-separated, New-Line)

In previous article, I have mentioned How to add a item or multiple items in C# List and Multiple ways to add newline into a String in C# but now in this article, I have mentioned how to convert list to comma-seperated string using C# or list to new-line seperated string using C# with console application examples.

Convert a list into a comma-separated string using C#

Let's take a look on an example to convert list into comma-seperated string using Console Application in C#.

So, in this article, first we will create a list of string and then we will seperate them to create single string, which has list values seperated by comma.

using System;
using System.Collections.Generic;
					
public class ListToString
{
	public static void Main()
	{
		  // List initialization and adding elements    
         List<string> lstString = new List<string> { "Hello", "World", "Here" };
		 var str = String.Join(",", lstString);
		
		 Console.WriteLine(str);
		
		 // List initialization and adding elements of int   
		 List<int> intString = new List<int> { 9, 7, 6 };
		 var str2 = String.Join(",", intString);
		
		 Console.WriteLine(str2);
	}
}

In the above code, we have to 2 list's one of string type and another is of int type.

Using String.Join() method, we are joining list items into string and using "," as delimiter.

Executing above code, gives output as below

Hello,World,Here
9,7,6

Using Linq

You can also use Linq method to convert the list into a comma-separated string.

using System;
using System.Collections.Generic;
using System.Linq;
					
public class ListToString
{
	public static void Main()
	{
		  // List initialization and adding elements    
         List<string> lstString = new List<string> { "Hello", "World", "Here" };
		 var str = lstString.Aggregate((a, x) => a + "," + x);
		 Console.WriteLine(str);
	}
}

The output would be the same as above

Hello,World,Here

List to string separated by new-line

Now, we can use NewLine to separate list items instead of using "," comma.

So here is an example of it

using System;
using System.Collections.Generic;
					
public class Program
{
	public static void Main()
	{
		List<string> list = new List<string>()
		{
			"Red",
			"Blue",
			"Green"
		};

		string output = string.Join(Environment.NewLine, list);    
		Console.Write(output);
	}
}

Output:

Red
Blue
Green

That's it, hope it helps.

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