Auto generate password in c# asp.net

public  static string GeneratePassword()
{

int length = 0;
Random rdm = new Random();
string characterPool = ”

ABCDEFGHIJKLabcdefghijkl12345MNOPQRSTUVWXYZmnopqrstuvwxyz67890″;
StringBuilder rs = new StringBuilder();
while (length < 6)
{
rs.Append(characterPool[(int)(rdm.NextDouble() * characterPool.Length)]);
length++;
}
return rs.ToString();
}