Random rand = new Random();
Random random = new Random(Environment.TickCount);
string chars = "0123456789abcdefghijklmnopqrstuvwxyz";
int count =20;
for (int j = 0; j < count; ++j)
{
var length = rand.Next(1, 3);
StringBuilder builder = new StringBuilder(length);
for (int i = 0; i < length; ++i)
{
builder.Append(chars[random.Next(chars.Length)]);
project.Context["rand_str"+i.ToString()] =builder.ToString();
project.SendInfoToLog("rand_str"+ j.ToString()+"= "+project.Context["rand_str"+i.ToString()],true);
}
}