public string GetPassWord()
{
string text = string.Empty;
var number = "0123456789";
var chars = "ABCDEFGHJKLMNOPQRSTUVWXYZabcefghijkmnopqrstuvwxyz";
var random = new Random();
text += new string(Enumerable.Repeat(number, 4).Select(s => s[random.Next(s.Length)]).ToArray());
text += new string(Enumerable.Repeat(chars, 4).Select(s => s[random.Next(s.Length)]).ToArray());
char[] cArr = text.ToCharArray();
string result = "";
for (int i = text.Length - 1; i >= 0; i--)
{
int index = random.Next(0, i);
result += cArr[index];
cArr[index] = cArr[i];
}
return result;
}