How to generate a random string, and specify the length you want, or better generate unique string on specification you want

Question

There is a library to generate Random numbers, so why isn\'t there a library for generation of random strings?

In other words how to generate a random string, and sp

Answer 1

Here is some modification from above answers.

  private static string GetFixedLengthStrinng(int len)
    {
        const string possibleAllChars = "ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz0123456789!@#$%^&*()_+{}:',.?/";
        StringBuilder sb = new StringBuilder();
        Random randomNumber = new Random();
        for (int i = 0; i < len; i++)
        {
            sb.Append(possibleAllChars[randomNumber.Next(0, possibleAllChars.Length)]);
        }
        return sb.ToString();
    }