Peter's Gekko

for (int i= 1; i < 10; i++)
   textBox1.Text+= i.ToString();

for (int i= textBox1.Text.Length; textBox1.Text.Length < 20; i++)
   textBox1.Text+= i.ToString();

for (;textBox1.Text.Length < 40;)
   textBox1.Text+= '#';

while (textBox1.Text.Length < 60)
   textBox1.Text+= '$';

The textbox (started as ++) will contain ++1234567891112131415###################$$$$$$$$$$$$$$$$$$$$ (what else).

Thanks to Frans on do while.

Peter