ARCed.Forms.CalculatorForm.buttonBackspace_Click C# (CSharp) 메소드

        private void buttonBackspace_Click(object sender, EventArgs e)
        {
            int n = this.textBox.Text.Length;
            if (n == 1)
                this.textBox.Text = "0";
            else if (n > 0)
                this.textBox.Text = this.textBox.Text.Substring(0, n - 1);
        }