//多个数据的传递
            double check = 1;
            double W = Convert.ToDouble(w);
            double month = Convert.ToDouble(textBox1.Text);
            double rate = Convert.ToDouble(textBox2.Text);
            double[] a = new double[5];
            a[0] = check;
            a[1] = W;
            a[2] = month;
            a[3] = rate;
            Frame.Navigate(typeof(Page4), a);              

　　　　 //通过Button的点击，进行计算和输出
　　　　 private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            double wc = 0;
            double w = 0;
            double x = Convert.ToDouble(textBox.Text);
            double z = 0;
            if (a[0] == 1)
            {
                double W = a[1];
                double month = a[2];
                double rate = a[3] / 100;
                double n = W / month;
                for (int i = 0; i < month; i++)
                {
                    z = Math.Pow(1+x/100, i);
                    w = w + ((W - i * n) * rate + n);
                    wc = wc + ((W - i * n) * rate + n) / z;
                }
            }
            if (a[0] == 2)
            {
                double W = a[1];
                double s = a[2];
                double month = a[3];
                w = month * s;
                for (int i = 0; i < month; i++)
                {
                    z = Math.Pow(1+x/100, i);
                    wc = wc + s / z;
                }
            }
            textBlock1.Text = Convert.ToString(Math.Round(w, 2));
            textBlock2.Text = Convert.ToString(Math.Round(wc, 2)) + "元";
            if (wc < a[1])
            {
                textBlock3.Text = "省了" + Convert.ToString(Math.Round(a[1] - wc, 2)) + "元";
            }
            if (wc > a[1])
            {
                textBlock3.Text = "多花了" + Convert.ToString(Math.Round(wc - a[1], 2)) + "元";
            }
            if (wc == a[1])
            {
                textBlock3.Text = "奇迹啊！二者花费正好相等";
            }
        }