Calculator

MainPage.xaml

<phone:PhoneApplicationPage
    x:Class="Calculate.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <!--LayoutRoot 是包含所有页面内容的根网格-->
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="220"/>
            <RowDefinition Height="548*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel 包含应用程序的名称和页标题-->
        <StackPanel x:Name="TitlePanel" Margin="5,10,7,28">
            <StackPanel.Background>
                <SolidColorBrush Color="#FF323232" Opacity="0.5"/>
            </StackPanel.Background>
            <TextBlock x:Name="Title" Text="复数计算" Margin="9,-7,0,0" Height="35" />
           
            <TextBlock x:Name="Expression" Margin="9,-7,0,0"  FontSize="28" Height="60" Foreground="#FF00FF45" />
            <TextBlock x:Name="result" Margin="9,-7,0,0" FontSize="48" TextAlignment="Right" Width="460" Height="104" Foreground="#FF00FF0B" />
        </StackPanel>

        <!--ContentPanel - 在此处放置其他内容-->
        <Grid x:Name="ContentPanel" Margin="5,0,19,0" Height="580" VerticalAlignment="Bottom" Grid.RowSpan="2">
            <Button Content="time"
                    Tap="TapTime"
                    Height="96" Margin="5,84,325,400"
                    Name="button1" Width="126" Background="#FF1F688E" BorderBrush="Black" />
            <Button Content="i"
                    Tap="TapI"
                    Height="96" HorizontalAlignment="Left"
                    Margin="2,162,0,0" Name="button2"
                    VerticalAlignment="Top" Width="126" BorderBrush="Black" >
                <Button.Background>
                    <SolidColorBrush Color="#FF1BA1E2"/>
                </Button.Background>
            </Button>
            <Button Content="7" FontSize="48"
                    Tap="Tap7"
                    Height="90" HorizontalAlignment="Left" Margin="2,242,0,0" Name="button3" VerticalAlignment="Top" Width="120" />
            <Button Content="4" FontSize="48"
                    Tap="Tap4"
                    Height="90" HorizontalAlignment="Left" Margin="2,322,0,0" Name="button4" VerticalAlignment="Top" Width="120" />
            <Button Content="date"
                    Tap="TapDate"
                    Height="96" Margin="115,84,215,400"
                    Name="button5" Width="126" BorderBrush="Black" >
                <Button.Background>
                    <SolidColorBrush Color="#FF1F688E"/>
                </Button.Background>
            </Button>
            <Button Content="C"
                    Tap="TapClean"
                    Height="96" Margin="225,84,105,400"
                    Name="button6" Width="126" BorderBrush="Black" >
                <Button.Background>
                    <SolidColorBrush Color="#FFE22D1B"/>
                </Button.Background>
            </Button>
            <Button Content="←"
                    Tap="TapBackspace"
                    Height="96" Margin="334,84,-4,400"
                    Name="button7" Width="126" BorderBrush="Black" >
                <Button.Background>
                    <SolidColorBrush Color="#FFE22D1B"/>
                </Button.Background>
            </Button>
            <Button Content="（"
                    Tap="TapLeftbraket"
                    Height="96" Margin="116,162,214,322"
                    Name="button8" Width="126" BorderBrush="Black" >
                <Button.Background>
                    <SolidColorBrush Color="{StaticResource PhoneAccentColor}"/>
                </Button.Background>
            </Button>
            <Button Content="）"
                    Tap="TapRightBraket"
                    Height="96" Margin="226,162,104,322"
                    Name="button9" Width="126" BorderBrush="Black" >
                <Button.Background>
                    <SolidColorBrush Color="{StaticResource PhoneAccentColor}"/>
                </Button.Background>
            </Button>
            <Button Content="÷" Height="96" FontSize="48"
                    Margin="335,162,-5,322" Name="button10"
                    Width="126" Background="Blue"
                    Tap="TapDiv" BorderBrush="Black" />
            <Button Content="8" FontSize="48"
                    Height="90"
                    Tap="Tap8"
                    Margin="116,242,220,248" Name="button11" Width="120" />
            <Button Content="9" FontSize="48"
                    Tap="Tap9"
                    Height="90" Margin="226,242,110,248" Name="button12" Width="120" BorderBrush="White" />
            <Button Content="×"
                    Tap="TapMulti"
                    Height="96"
                    FontSize="48"
                    Margin="335,242,-5,242"
                    Name="button13" Width="126" Background="#FF0E00FF" BorderBrush="Black"  />
            <Button Content="5" FontSize="48"
                    Tap="Tap5"
                    Height="90" Margin="116,322,220,168" Name="button14" Width="120" />
            <Button Content="6" FontSize="48"
                    Tap="Tap6"
                    Height="90" Margin="226,322,110,168" Name="button15" Width="120" />
            <Button Content="-" FontSize="68"
                    Tap="TapMinus"
                    Height="96" Margin="335,322,-5,162"
                    Name="button16" Width="126" Background="#FF0E00FF" BorderBrush="Black" />
            <Button Content="1" FontSize="48"
                    Tap="Tap1"
                    Height="90" Margin="2,401,334,89" Name="button17" Width="120" />
            <Button Content="2" FontSize="48"
                    Tap="Tap2"
                    Height="90" Margin="116,401,220,89" Name="button18" Width="120" />
            <Button Content="3" FontSize="48"
                    Tap="Tap3"
                    Height="90" Margin="226,401,110,89" Name="button19" Width="120" />
            <Button Content="+" FontSize="48"
                    Tap="TapAdd"
                    Height="96" Margin="335,401,-5,83"
                    Name="button20" Width="126" Background="#FF0E00FF" BorderBrush="Black" />
            <Button Content="0"
                    Height="90" FontSize="40"
                    Tap="Tap0"
                    Margin="2,480,344,10" Name="button21" />
            <Button Content="."
                    Tap="TapDot" FontSize="48"
                    Height="90" Margin="226,480,110,10" Name="button23" Width="120" />
            <Button Content="=" FontSize="48"
                    Tap="TapEqual"
                    Height="96" Margin="335,480,-5,4"
                    Name="button24" Width="126" Background="#FF19FF00" BorderBrush="Black" />
            <Button Content="Ans"
                    FontSize="34"
                    Height="90"
                    Margin="115,480,221,10"
                    x:Name="button18_Copy"
                    Width="120" Tap="TapAns"/>
            <TextBlock Height="70" FontSize="48" Foreground="Plum" HorizontalAlignment="Left" Margin="294,0,0,0" Name="textBlock1" Text="Graphy" VerticalAlignment="Top" Width="166" />
            <TextBlock Name="textBlock2" DoubleTap="TapMatlab" Text="MATLAB" FontSize="48" Foreground="Plum" Margin="6,0,262,510" >
               
            </TextBlock>
        </Grid>
    </Grid>
 
    <!--演示 ApplicationBar 用法的示例代码-->
    <!--<phone:PhoneApplicationPage.ApplicationBar>
        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
            <shell:ApplicationBarIconButton IconUri="/Images/appbar_button1.png" Text="按钮 1"/>
            <shell:ApplicationBarIconButton IconUri="/Images/appbar_button2.png" Text="按钮 2"/>
            <shell:ApplicationBar.MenuItems>
                <shell:ApplicationBarMenuItem Text="菜单项 1"/>
                <shell:ApplicationBarMenuItem Text="菜单项 2"/>
            </shell:ApplicationBar.MenuItems>
        </shell:ApplicationBar>
    </phone:PhoneApplicationPage.ApplicationBar>-->

</phone:PhoneApplicationPage>

MainPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;

namespace Calculate
{
    public partial class MainPage : PhoneApplicationPage
    {
        // 构造函数
        public MainPage()
        {
            InitializeComponent();
        }
        public String expression = "";//存放表达式
        public Boolean expr_type;//真：计算表达式 假：其他
        public String store = null;//存放结果

        //Expression 输入

        //Ans
        private void TapAns(object sender, GestureEventArgs e)
        {

            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

           
            if (!(expression.ElementAt(expression.Length - 1) == '.' || (expression.ElementAt(expression.Length - 1) >= '0' && expression.ElementAt(expression.Length - 1) <= '9')))
                expression += "Ans";
            }
            else expression += "Ans";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        // .
        private void TapDot(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }
                expression += ".";
            }
            else expression += ".";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //=
        private void TapEqual(object sender, GestureEventArgs e)
        {

            expression += "=";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
            try
            {
                store = GetResult(expression, store).ToString();
                result.Text = store + "   ";
            }

            catch (Exception)
            {
                result.Text = "error     ";
            }
        }

        //Time
        private void TapTime(object sender, GestureEventArgs e)
        {
            Expression.Text = DateTime.Now.TimeOfDay.Hours.ToString() + ":" + DateTime.Now.TimeOfDay.Minutes.ToString();
        }

        //Date
        private void TapDate(object sender, GestureEventArgs e)
        {
            Expression.Text = String.Format("{0}\\{1}\\{2}    {3}", DateTime.Now.Date.Year, DateTime.Now.Date.Month, DateTime.Now.Date.Day, DateTime.Now.DayOfWeek);
        }

        //0
        private void Tap0(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "0";
            }
            else expression += "0";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //1
        private void Tap1(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "1";
            }
            else expression += "1";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //2
        private void Tap2(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "2";
            }
            else expression += "2";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //3
        private void Tap3(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "3";
            }
            else expression += "3";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //4
        private void Tap4(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "4";
            }
            else expression += "4";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //5
        private void Tap5(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "5";
            }
            else expression += "5";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //6
        private void Tap6(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "6";
            }
            else expression += "6";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //7
        private void Tap7(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "7";
            }
            else expression += "7";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //8
        private void Tap8(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }

                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "8";
            }
            else expression += "8";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //9
        private void Tap9(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }
            }
            if (expression.Length > 0)
            {
                if (!(expression.ElementAt(expression.Length - 1) == 's'))
                    expression += "9";
            }

            else expression += "9";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //+
        private void TapAdd(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = "";
                }
            }
            expression += "+";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //-
        private void TapMinus(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = "";
                }
            }
            expression += "-";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //*
        private void TapMulti(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = "";
                }
            }
            expression += "×";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //  /
        private void TapDiv(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = "";
                }
            }
            expression += "÷";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        //  i
        private void TapI(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = "";
                }
            }
            expression += "i";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        // Clean
        private void TapClean(object sender, GestureEventArgs e)
        {
            expression = "";
            Expression.Text = expression;
        }

        //Backspace
        private void TapBackspace(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.ElementAt(expression.Length - 1) == 's')
                {
                    expression = expression.Substring(0, expression.Length - 3);
                }
                else expression = expression.Substring(0, expression.Length - 1);
            }
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        // (
        private void TapLeftbraket(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }
                if (!(expression.ElementAt(expression.Length - 1) == 's')) expression += "(";
            }
            else expression += "(";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }

        // )
        private void TapRightBraket(object sender, GestureEventArgs e)
        {
            if (expression.Length > 0)
            {
                if (expression.IndexOf('=') >= 0)
                {
                    expression = " ";
                }
            }
            expression += ")";
            if (expression.Length > 20)
            {
                Expression.Text = expression.Substring(expression.Length - 20);
            }
            else Expression.Text = expression;
        }
        //end  Expression

        //计算运算符的优先级
        public static int pp(char c)
        {
            int k = -2;
            switch (c)
            {
                case '*':
                case '/':
                    k = 2;
                    break;
                case '+':
                case '-':
                    k = 1;
                    break;
                case '(':
                case ')':
                    k = 0;
                    break;
                case '=':
                    k = -1;
                    break;
            }
            return k;
        }

        //将字符串转换成实数
        public static double shishu(ref String s, ref int k)
        {
            double x, y = 1.0;
            int flag = 1;
            x = 0.0;
            char c = s.ElementAt(k);
            while (c >= '0' && c <= '9' || c == '.')
            {
                k = k + 1;
                if (c >= '0' && c <= '9')
                    if (flag == 0)
                    {
                        y *= 0.1;
                        x += (y * (c - 48));
                    }
                    else
                        x = 10 * x + (c - 48);
                else flag = 0;
                c = s.ElementAt(k);
            }
            return x;

        }

        //计算表达式的值
        double GetResult(String str, String str1 = null)
        {
            //格式化str

            int i = 0;
            str = str.Replace("Ans", str1);
            str = str.Replace(" ", null);
            while (i < str.Length)
            {
                if (i == 0 && str.ElementAt(i) == '-')
                {
                    str = "0" + str;
                }
                if (i > 0)
                {
                    if (str.ElementAt(i - 1) == '(')
                        str = str.Insert(i, "0");
                }
                i++;
            }

            i = 0;
            while (str.ElementAt(i) != '=')
            {
                switch (str.ElementAt(i))
                {
                    case '÷':
                        str = str.Replace("÷", "/");
                        break;
                    case '×':
                        str = str.Replace("×", "*");
                        break;
                    case ' ':
                        str.Remove(i, 1);
                        break;
                }

                i++;
            }
            //格式化结束

            Stack<double> st_data = new Stack<double>();
            Stack<char> st_op = new Stack<char>();
            st_op.Push('=');

            int flag = 1, k;

            k = 0;
            double x, y;
            char c = str.ElementAt(k);

            while (flag != 0)
            {
                if (c >= '0' && c <= '9' || c == '.')
                    st_data.Push(shishu(ref str, ref k));
                else if (c == '(' || pp(c) > pp(st_op.Peek()))
                {
                    st_op.Push(c);
                    k = k + 1;
                }
                else if ((c == '=') && (st_op.Peek() == '='))
                    flag = 0;
                else if ((c == ')') && (st_op.Peek() == '('))
                {
                    st_op.Pop();
                    k++;
                }
                else if (pp(c) <= pp(st_op.Peek()))
                {
                    y = st_data.Peek();
                    st_data.Pop();
                    x = st_data.Peek();
                    st_data.Pop();
                    c = st_op.Peek();
                    st_op.Pop();
                    switch (c)
                    {
                        case '+':
                            x = x + y;
                            break;
                        case '-':
                            x = x - y;
                            break;
                        case '*':
                            x = x * y;
                            break;
                        case '/':
                            x = x / y;
                            break;
                    }
                    st_data.Push(x);
                }
                c = str.ElementAt(k);
            }
            return st_data.Peek();
        }

        //页面转换  main->Matlab
        private void TapMatlab(object sender, GestureEventArgs e)
        {
            NavigationService.Navigate(new Uri("/Matlab.xaml", UriKind.Relative));
        }

    }
}