WPF简单的口算案例_.NET_编程开发_程序员俱乐部

前几天在博客园，看到有博友利用Winform做了一个口算案例，于是我想把它移植在WPF程序中。Winform程序：http://www.cnblogs.com/ImYZF/p/3345452.html

WPF中：

个人感觉在WPF中动态创建完控件之后，无法有像Winform中FindName()这样的方法来对控件进行搜寻，因此我采用的方法是在布局控件中动态创建控件后，用for循环遍历布局中的控件，然后利用

布局控件的Children属性进行对控件的定位。

上代码：

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Threading.Tasks;
  6 using System.Windows;
  7 using System.Windows.Controls;
  8 using System.Windows.Data;
  9 using System.Windows.Documents;
 10 using System.Windows.Input;
 11 using System.Windows.Media;
 12 using System.Windows.Media.Imaging;
 13 using System.Windows.Navigation;
 14 using System.Windows.Shapes;
 15 
 16 namespace 口算训练
 17 {
 18     /// <summary>
 19     /// Interaction logic for MainWindow.xaml
 20     /// </summary>
 21     public partial class MainWindow : Window
 22     {
 23         public MainWindow()
 24         {
 25             InitializeComponent();
 26         }
 27 
 28         private void btnAdd_Click(object sender, RoutedEventArgs e)
 29         {
 30             if (txtNum.Text == "")
 31             {
 32                 MessageBox.Show("请输入数目！");
 33                 return;
 34             }
 35             //清空布局控件中的控件
 36             grid2.Children.Clear();
 37             int totalNumber = int.Parse(txtNum.Text);
 38             Random random = new Random();
 39             TextBox tb = new TextBox();
 40             Label l = new Label();
 41             for (int i = 0; i < totalNumber; i++)
 42             {
 43                 //根据问题的数量设置row的个数
 44                 grid2.RowDefinitions.Add(new RowDefinition() { Height=new GridLength(30)});
 45                 for (int j = 1; j <=3; j++)
 46                 {
 47                     //设置文本框的一些属性
 48                     tb = new TextBox();
 49                     tb.Width = 80;
 50                     tb.Height = 25;
 51                     tb.Name = "txt" + Convert.ToString(i)+Convert.ToString(j);
 52                     //附加属性
 53                     tb.SetValue(Grid.RowProperty, i);
 54                     tb.SetValue(Grid.ColumnProperty,(j-1)*2);
 55                    
 56                     if (j <= 2)
 57                     {
 58                         //产生随机数，作为加数
 59                         tb.Text = Convert.ToString(random.Next(10));
 60                         tb.IsReadOnly = true;
 61                     } 
 62                     //添加子控件
 63                     grid2.Children.Add(tb);
 64                     l = new Label();
 65 
 66                     //创建Label
 67                     switch (j) {
 68                         case 1: l.Width = 30; l.Height = 20; l.Content = "+"; l.SetValue(Grid.RowProperty, i); l.SetValue(Grid.ColumnProperty, j);
 69                             break;
 70                         case 2:   l.Width = 30; l.Height = 20; l.Content = "="; l.SetValue(Grid.RowProperty, i); l.SetValue(Grid.ColumnProperty, j + 1); 
 71                             break;
 72                         case 3: l.Width = 50; l.Height = 30; ; l.Name = "labelresult" + Convert.ToString(i); ; l.SetValue(Grid.RowProperty, i); l.SetValue(Grid.ColumnProperty, j + 2); 
 73                             break;
 74 
 75                     }
 76                     grid2.Children.Add(l);
 77 
 78 
 79                 }
 80                 
 81             }
 82         }
 83 
 84         private void btnResult_Click(object sender, RoutedEventArgs e)
 85         {
 86             int totalNumber=int.Parse(txtNum.Text);
 87             TextBox[] tbs;
 88             for (int i = 1; i <=totalNumber; i++)
 89             {
 90 
 91                 tbs = new TextBox[3];
 92                 //获取有关TextBox控件
 93                 tbs[0] = grid2.Children[6 * (i-1)] as TextBox;
 94                 tbs[1] = grid2.Children[6 * (i-1) + 2] as TextBox;
 95                 tbs[2] = grid2.Children[6 * (i-1) + 4] as TextBox;
 96 
 97                 Label labelresult = grid2.Children[6 * (i-1) + 5] as Label;
 98                 //如果未填答案,按错误处理
 99                 if (tbs[2].Text == "")
100                 {
101                     labelresult.Content = "X";
102                     continue;
103                 }
104                 int add = Convert.ToInt32(tbs[0].Text) + Convert.ToInt32(tbs[1].Text);
105                 if (add == Convert.ToInt32(tbs[2].Text))
106                 {
107                     labelresult.Content = "right!";
108                 }
109                 else
110                 {
111                     labelresult.Content = "X";
112                 }                
113             }
114         }
115     }
116 }