Split string after certain character count

Question

I need some help. I\'m writing an error log using text file with exception details. With that I want my stack trace details to be written like the below and not in straight

Answer 1

Following example splits 10 characters per line, you can change as you like {N} where N can be any number.

var input = "stacktraceabcdefghijklmnopqrstuvwxyztacktraceabcdefghijklmnopqrswxyztacktraceabcdefghijk";
var regex = new Regex(@".{10}");
string result = regex.Replace(input, "$&" + Environment.NewLine);
Console.WriteLine(result);

Here is the Demo