How to: Join Multiple Strings (C# Programming Guide) string two = "karan"; string str = "chanana " + karan + "k"; System.Console.WriteLine(str); The following code uses the Append method of the StringBuilder class to join three strings without the chaining effect of the + operator. class StringBuilderTest { static void Main() { string karan = "karan"; System.Text.StringBuilder sb = new System.Text.StringBuilder(); sb.Append("chanana "); sb.Append(karan); sb.Append(" k"); System.Console.WriteLine(sb.ToString()); string str = sb.ToString(); System.Console.WriteLine(str); } } Tag , karan chanana , c , c++ , karan