如何在wpf c＃中的特定行中获取单元格的值？

2 回答

• -1

  如果已将 DataGrid 的 ItemsSource 属性设置或绑定到 IEnumerable<T> ，则可以将 Items 集合中的每个对象强制转换为 T ，然后访问其任何属性，例如：

  foreach(var item in salesGrid.Items.OfType<YourType>())
  {
      string text = item.YourProperty.ToString();
  }
  

  或者您可以直接遍历 ItemsSource 集合 .

  回复于 2024-04-27T07:52:23+08:00
• -1

  数据绑定技术通常用于WPF应用程序 .

  步骤1创建类并在其中定义属性 . （模型的创建）

  public class Student : NotifyPropertyChanged
  {
      string _name;
      public string Name
      {
          get { return _name; }
          set { _name = value; OnPropertyChanged("Name"); }
      }
  
      string _address;
      public string Address
      {
          get { return _address; }
          set { _address = value; OnPropertyChanged("Address"); }
      }
  
      int _age;
      public int Age
      {
          get { return _age; }
          set { _age = value; OnPropertyChanged("Age"); }
      }
  }
  
  
  
  public abstract class NotifyPropertyChanged : INotifyPropertyChanged
  {
      protected virtual void OnPropertyChanged(string propertyName)
      {
          if (PropertyChanged != null)
          {
              PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
          }
      }
  
      public event PropertyChangedEventHandler PropertyChanged;
  }
  

  NotifyPropertyChanged类在触发对象时将其标记为notigy

  步骤2为ViewModel创建另一个类，其中您的业务逻辑应该去创建一个模型属性列表（将在视图绑定中使用）

  public class MyContext : NotifyPropertyChanged
  {
      ObservableCollection<Student> _students = new ObservableCollection<Student>();
      public ObservableCollection<Student> Students
      {
          get { return _students; }
          set { _students = value; OnPropertyChanged("Students"); }
      }
  
      Student _selectedStudent = new Student();
      public Student SelectedStudent
      {
          get { return _selectedStudent; }
          set { _selectedStudent = value; OnPropertyChanged("SelectedStudent"); }
      }
  }
  

  STEP 3将您的逻辑绑定到视图（）

  public partial class MainWindow : Window
    {
        public MainWindow()
       {
            InitializeComponent();
  
          MyContext myContext = new MyContext();
          myContext.Students = new ObservableCollection<Student>
          {
              new Student{ Name="A", Address="Address1", Age=10},
              new Student{ Name="B", Address="Address2", Age=12},
              new Student{ Name="C", Address="Address3", Age=11},
              new Student{ Name="D", Address="Address4", Age=18},
              new Student{ Name="E", Address="Address5", Age=13},
              new Student{ Name="F", Address="Address6", Age=15},
              new Student{ Name="G", Address="Address7", Age=16},
          };
  
          this.DataContext = myContext;
      }
  }
  

  STEP 4最后在你的XAML页面中添加一个DataGrid和Bind ItemsSource，如ViewModel中所定义的那样定义

  <Window x:Class="WpfApplication10.MainWindow"
          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          Title="MainWindow" Height="350" Width="525">
  
          <DataGrid ItemsSource="{Binding Students,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                    SelectedItem="{Binding SelectedStudent,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
  </Window>
  

  在上面的代码中，我展示了如何将值列表绑定到WPF DataGrid并从中选择单个值 .

  回复于 2024-04-27T07:52:23+08:00