ARCed.Forms.CalculatorForm.buttonFactor_Click C# (CSharp) Method

        private void buttonFactor_Click(object sender, EventArgs e)
        {
            int num = 1;
            for (int i = 1; i <= Convert.ToInt32(this.InputValue); i++)
                num = num * i;
            this.textBox.Text = Convert.ToString(num);
            this.inputstatus = false;
        }