WPF简单的口算案例

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：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;

 namespace 口算训练
 {
     /// <summary>
     /// Interaction logic for MainWindow.xaml
     /// </summary>
     public partial class MainWindow : Window
     {
         public MainWindow()
         {
             InitializeComponent();
         }

         private void btnAdd_Click(object sender, RoutedEventArgs e)
         {
             if (txtNum.Text == "")
             {
                 MessageBox.Show("请输入数目！");
                 return;
             }
             //清空布局控件中的控件
             grid2.Children.Clear();
             int totalNumber = int.Parse(txtNum.Text);
             Random random = new Random();
             TextBox tb = new TextBox();
             Label l = new Label();
             for (int i = ; i < totalNumber; i++)
             {
                 //根据问题的数量设置row的个数
                 grid2.RowDefinitions.Add(new RowDefinition() { Height=new GridLength()});
                 for (int j = ; j <=; j++)
                 {
                     //设置文本框的一些属性
                     tb = new TextBox();
                     tb.Width = ;
                     tb.Height = ;
                     tb.Name = "txt" + Convert.ToString(i)+Convert.ToString(j);
                     //附加属性
                     tb.SetValue(Grid.RowProperty, i);
                     tb.SetValue(Grid.ColumnProperty,(j-)*);

                     if (j <= )
                     {
                         //产生随机数，作为加数
                         tb.Text = Convert.ToString(random.Next());
                         tb.IsReadOnly = true;
                     }
                     //添加子控件
                     grid2.Children.Add(tb);
                     l = new Label();

                     //创建Label
                     switch (j) {
                         case : l.Width = ; l.Height = ; l.Content = "+"; l.SetValue(Grid.RowProperty, i); l.SetValue(Grid.ColumnProperty, j);
                             break;
                         case :   l.Width = ; l.Height = ; l.Content = "="; l.SetValue(Grid.RowProperty, i); l.SetValue(Grid.ColumnProperty, j + );
                             break;
                         case : l.Width = ; l.Height = ; ; l.Name = "labelresult" + Convert.ToString(i); ; l.SetValue(Grid.RowProperty, i); l.SetValue(Grid.ColumnProperty, j + );
                             break;

                     }
                     grid2.Children.Add(l);

                 }

             }
         }

         private void btnResult_Click(object sender, RoutedEventArgs e)
         {
             int totalNumber=int.Parse(txtNum.Text);
             TextBox[] tbs;
             for (int i = ; i <=totalNumber; i++)
             {

                 tbs = new TextBox[];
                 //获取有关TextBox控件
                 tbs[] = grid2.Children[ * (i-)] as TextBox;
                 tbs[] = grid2.Children[ * (i-) + ] as TextBox;
                 tbs[] = grid2.Children[ * (i-) + ] as TextBox;

                 Label labelresult = grid2.Children[ * (i-) + ] as Label;
                 //如果未填答案,按错误处理
                 if (tbs[].Text == "")
                 {
                     labelresult.Content = "X";
                     continue;
                 }
                 int add = Convert.ToInt32(tbs[].Text) + Convert.ToInt32(tbs[].Text);
                 if (add == Convert.ToInt32(tbs[].Text))
                 {
                     labelresult.Content = "right!";
                 }
                 else
                 {
                     labelresult.Content = "X";
                 }
             }
         }
     }
 }