How to remove the last character from Stringbuilder

We usually use StringBuilder to append string in loops and make a string of each data separated by a delimiter. but you always end up with an extra delimiter at the end. This code sample shows how to remove the last delimiter from a StringBuilder.

using System; using System.Collections.Generic; using System.Text; using System.Linq;

class Program { static void Main() { var list =Enumerable.Range(0, 10).ToArray(); StringBuilder sb = new StringBuilder(); foreach(var item in list) { sb.Append(item).Append(","); } sb.Length--;//Just reduce the length of StringBuilder, it's so easy Console.WriteLine(sb); } }

//Output : 0,1,2,3,4,5,6,7,8,9

Alternatively, we can use string.Join for the same results, please refer to blow code sample.

using System; using System.Collections.Generic; using System.Text; using System.Linq;

class Program { static void Main() { var list = Enumerable.Range(0, 10).Select(n => n.ToString()).ToArray(); string str = string.Join(",", list); Console.WriteLine(str); } }

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