乘法计算器

QQ图片20181018104014.png

 private void button1_Click(object sender, EventArgs e)
        {
            float num1 = 0;
            float num2 = 0;
            float result = 0;
            num1=float.Parse(textBox1.Text);
            num2=float.Parse(textBox2.Text);
            result=num1*num2;
            textBox3.Text=result.ToString();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
            textBox2.Text = "";
            textBox3.Text = "";