首页 > 代码库 > 一个简单的Windows计算器
一个简单的Windows计算器
UI
功能
很简单用Grid5*4布局，填充Button
跨越多个单元格，设置控件的Grid.ColumnSpan Grid.RowSpan属性
1 <Grid Width="400" Grid.Row="1" Height="300" HorizontalAlignment="Center" VerticalAlignment="Center"> 2 <Grid.RowDefinitions> 3 <RowDefinition /> 4 <RowDefinition /> 5 <RowDefinition /> 6 <RowDefinition /> 7 </Grid.RowDefinitions> 8 <Grid.ColumnDefinitions> 9 <ColumnDefinition />10 <ColumnDefinition />11 <ColumnDefinition />12 <ColumnDefinition />13 <ColumnDefinition />14 </Grid.ColumnDefinitions>15 <Button Content="1" Grid.Row="0" Grid.Column="0" Click="Button_Click"/>16 <Button Content="2" Grid.Row="0" Grid.Column="1" Click="Button_Click"/>17 <Button Content="3" Grid.Row="0" Grid.Column="2" Click="Button_Click"/>18 <Button Content="4" Grid.Row="1" Grid.Column="0" Click="Button_Click"/>19 <Button Content="5" Grid.Row="1" Grid.Column="1" Click="Button_Click"/>20 <Button Content="6" Grid.Row="1" Grid.Column="2" Click="Button_Click"/>21 <Button Content="7" Grid.Row="2" Grid.Column="0" Click="Button_Click"/>22 <Button Content="8" Grid.Row="2" Grid.Column="1" Click="Button_Click"/>23 <Button Content="9" Grid.Row="2" Grid.Column="2" Click="Button_Click"/>24 <Button Content="0" Grid.Row="3" Grid.Column="0" Click="Button_Click"/>25 <Button Content="." Grid.Row="3" Grid.Column="1" Click="Button_Click"/>26 <Button x:Name="AnsButton" Background="Orange" Content="Ans" Grid.Row="3" Grid.Column="2" Click="AnsButton_Click"/>27 28 <Grid Grid.Column="3" Grid.RowSpan="3" Grid.ColumnSpan="2">29 <Grid.RowDefinitions>30 <RowDefinition />31 <RowDefinition />32 <RowDefinition />33 </Grid.RowDefinitions>34 <Grid.ColumnDefinitions>35 <ColumnDefinition />36 <ColumnDefinition />37 </Grid.ColumnDefinitions>38 <Grid.Resources>39 <Style TargetType="Button" BasedOn="{StaticResource {x:Type Button}}">40 <Setter Property="Background" Value="Purple"/>41 </Style>42 </Grid.Resources>43 <Button Content="(" Grid.Row="0" Grid.Column="0" Click="Button_Click"/>44 <Button Content=")" Grid.Row="0" Grid.Column="1" Click="Button_Click"/>45 46 <Button Content="+" Grid.Row="1" Grid.Column="0" Click="Button_Click"/>47 <Button Content="-" Grid.Row="1" Grid.Column="1" Click="Button_Click"/>48 49 <Button Content="*" Grid.Row="2" Grid.Column="0" Click="Button_Click"/>50 <Button Content="/" Grid.Row="2" Grid.Column="1" Click="Button_Click"/>51 </Grid>52 53 54 55 56 <Button x:Name="ResultButton" Background="#FF00A000" Content="=" Grid.Row="3" Grid.Column="3" Grid.ColumnSpan="2" Click="ResultButton_Click"/>57 58 </Grid>
结果
设置input TextBox，Ouput TextBox，background属性为transparent，使得显示效果似乎是一个TextBox
1 <Grid> 2 <Grid.Resources> 3 <Style TargetType="TextBox" BasedOn="{StaticResource {x:Type TextBox}}"> 4 <Setter Property="BorderThickness" Value="0"/> 5 <Setter Property="BorderBrush" Value="Transparent"/> 6 <Setter Property="Background" Value="Transparent"/> 7 <Setter Property="VerticalAlignment" Value="Center"/> 8 <Setter Property="Margin" Value="5,0"/> 9 </Style>10 </Grid.Resources>11 <Grid.RowDefinitions>12 <RowDefinition />13 <RowDefinition />14 </Grid.RowDefinitions>15 <Border Grid.RowSpan="2"/>16 <Grid>17 <Grid.ColumnDefinitions>18 <ColumnDefinition />19 <ColumnDefinition Width="70"/>20 </Grid.ColumnDefinitions>21 <TextBox Text="{Binding Input}" FontSize="13.3" CaretBrush="#FF646400" TextChanged="TextBox_TextChanged"/>22 <Button x:Name="ClearButton" Background="Salmon" Grid.Column="1" Content="×" Click="ClearButton_Click"/>23 </Grid>24 <Grid Grid.Row="1">25 <Grid.ColumnDefinitions>26 <ColumnDefinition />27 <ColumnDefinition Width="70"/>28 </Grid.ColumnDefinitions>29 <TextBox IsReadOnly="True" Text="{Binding Output}" FontSize="20" TextAlignment="Right"/>30 <Button x:Name="ACButton" Grid.Column="1" Background="#FF00A000" Content="AC" Click="ACButton_Click"/>31 </Grid>32 </Grid>
对Input表达式求值和返回错误信息（如果存在）
1 class CalResult 2 { 3 public double Result { get; set; } 4 public bool IsSucc { get; set; } 5 public string Note { get; set; } 6 } 7 CalResult CalByStr(string s) 8 { 9 10 var r = new CalResult { IsSucc = false }; 11 12 int[] st = new int[1000]; 13 int[] c = new int[1000]; 14 double[] a = new double[1000]; 15 int n = 0, p = 0, f = 0, i = 0, j = 0, x = 0, y = 0; 16 17 st[‘+‘] = st[‘-‘] = 1; 18 st[‘*‘] = st[‘/‘] = 2; 19 20 if (string.IsNullOrWhiteSpace(s)) 21 { 22 r.Note = "空白的输入"; 23 return r; 24 } 25 26 for (i = 0; i < s.Length; i++) while (i < s.Length && s[i] == ‘ ‘) s = s.Remove(i, 1); 27 28 29 //删除无用的空格； 30 31 n = s.Length; 32 for (i = 0; i < n; i++) if (s[i] > ‘9‘ || s[i] < ‘(‘ || s[i] == ‘,‘) 33 { 34 r.Note = "无效表达式!表达式中包含计算器无法识别的字符,请注意使用英文符号"; 35 return r; 36 } 37 38 //以上完成对表达式的基本检查 39 40 for (i = 0; i < n; i++) 41 { 42 if (s[i] == ‘)‘) 43 { 44 if (x == 0) 45 { 46 r.Note = "无效表达式！ 括号不匹配，请核对你的输入"; 47 return r; 48 } 49 --x; 50 } 51 if (s[i] == ‘(‘) ++x; 52 } 53 54 if (x != 0) 55 { 56 r.Note = "无效表达式！ 括号不匹配，请核对你的输入"; 57 return r; 58 } 59 60 //以上完成检查括号是否匹配 61 62 63 64 for (i = 0; i < s.Length; i++) if (s[i] == ‘.‘) 65 if (i == 0 || !char.IsDigit(s[i - 1])) s = s.Insert(i, "0"); 66 else if (i + 1 == s.Length || !char.IsDigit(s[i + 1])) s = s.Insert(i + 1, "0"); 67 // . , .x , x. 有效输入 并为其扩充值 68 69 70 for (i = 0; i < s.Length; i++) if (isas(s[i])) 71 { 72 int t = i + 1; 73 while (t < s.Length && isas(s[t])) 74 if (s[t] == ‘-‘) 75 { 76 if (s[i] == ‘+‘) s = s.Remove(i, 1); 77 else if (s[i] == ‘-‘) 78 { 79 s = s.Insert(i, "+"); 80 s = s.Remove(i + 1, 2); 81 } 82 } 83 else s = s.Remove(t, 1); 84 } 85 86 //处理多余的+和-，加和减作为正负号处理 87 88 89 90 for (i = 0; i < s.Length; i++) 91 if (isas(s[i]) && (i == 0 || s[i - 1] == ‘(‘)) s = s.Insert(i, "0"); 92 93 //对于 -3，+3 处理为 0-3，0+3； 94 95 96 for (i = 1; i < s.Length; i++) 97 { 98 if (s[i] == ‘(‘ && (isd(s[i - 1]) || s[i - 1] == ‘)‘)) s = s.Insert(i, "*"); 99 if (s[i] == ‘)‘ && i + 1 < s.Length && isd(s[i + 1])) s = s.Insert(i + 1, "*");100 if (s[i] == ‘)‘ && s[i - 1] == ‘(‘)101 {102 r.Note = "无效表达式！ （）内缺少内容，请核对你的输入";103 return r;104 }105 }106 107 //处理括号问题 1.（）为无效输入；2. )( )x x( 为有效输入 等效为 )*( )*x x*(；108 109 110 n = s.Length;111 112 if (s[0] == ‘*‘ || s[0] == ‘/‘)113 {114 r.Note = "无效表达式！ 乘和除出现在第一位，请核对你的输入";115 return r;116 }117 //乘和除出现在第一位 为无效输入118 119 120 for (i = 1; i < n; i++)121 if (s[i] == ‘.‘)122 {123 p = 0;124 125 for (j = i - 1; j > 0; j--) if (s[j] == ‘.‘)126 {127 p = j;128 break;129 }130 131 for (j = p + 1; j < i; j++) if (isf(s[j]))132 p = 0;133 134 if (p != 0)135 {136 r.Note = "无效表达式！ 同一个数字包含多个小数点，请核对你的输入";137 return r;138 }139 }140 // 一个数字包含超过1个.为无效输入141 142 else if (isf(s[i]))143 {144 p = 1;145 if (i + 1 == n) p = 0;146 if (!(s[i - 1] >= ‘0‘ && s[i - 1] <= ‘9‘ || s[i - 1] == ‘)‘)) p = 0;147 if (i + 1 < n) if (!(s[i + 1] >= ‘0‘ && s[i + 1] <= ‘9‘ || s[i + 1] == ‘(‘)) p = 0;148 if (p == 0)149 {150 r.Note = "无效表达式！ 表达式中出现连续的运算符，请核对你的输入";151 return r;152 }153 }154 155 // 表达式中出现连续的运算符为无效输入156 157 158 159 160 //以上完成对表达式的检验和标准化矫正161 162 163 164 //以下为对表达式的求值过程165 166 167 for (i = 0; i < n; i++)168 if (s[i] < ‘0‘ && s[i] != ‘.‘)169 {170 if (s[i] != ‘(‘)171 {172 if (isd(s[i - 1])) double.TryParse(s.Substring(f, i - f), out a[++x]);173 if (s[i] == ‘)‘)174 {175 while (c[y] != ‘(‘)176 {177 --x;178 a[x] = cal(a[x], a[x + 1], c[y]);179 --y;180 }181 y--;182 }183 else184 {185 while (st[c[y]] >= st[s[i]])186 {187 --x;188 a[x] = cal(a[x], a[x + 1], c[y]);189 --y;190 }191 c[++y] = s[i];192 }193 }194 else c[++y] = s[i];195 f = i + 1;196 }197 198 199 if (s[i - 1] != ‘)‘) double.TryParse(s.Substring(f, i - f), out a[++x]);200 201 //若表达式末尾不为右括号，则可能还存在一个数字没有处理202 203 204 while (y > 0)205 {206 --x;207 a[x] = cal(a[x], a[x + 1], c[y]);208 --y;209 }210 211 //以上完成对表达式的求值212 r.IsSucc = true;213 r.Result = a[1];214 return r;215 216 //显示表达式的值217 }
源solution
http://files.cnblogs.com/lightz/calculartor.zip
一个简单的Windows计算器
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。