If you wanna create some random values for hash I would recommend Guid:
Guid id = Guid.NewGuid();
if just some alphanumeric characters than write your own class:
public string GenerateChars(int numberOfDigits)
{
string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
var random = new Random();
string generated = "";
for(int i =0; i< numberOfDigits; i++)
{
int i = random.Next(0, chars.Length);
generated += chars.Substring(i-1, 1);
}
return generated;
}
