WPF中Converter的使用

￡神魔★判官ぃ 2021-09-10 22:34 466阅读 0赞

WPF中Converter的用于对数据的转换。以下实例将实现将数据中的性别属性的转换（0：男，1：女）。

**1、创建SexConverter.cs类，并实现IValueConverter接口**

public class SexConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string result = "";
            string sex = (string)value;
            if (sex == "0")
            {
                result = "男";
            }
            else if (sex == "1")
            {
                result = "女";
            }
            return result;
        }
    
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

**2、在XAML页面中使用**

<Window.Resources>
        
        <converter:SexConverter x:Key="SexConverter"/>
            
        <Style TargetType="ListBoxItem">
            <Setter Property="ContentTemplate">
                <Setter.Value>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding ID}" Width="60"/>
                            <TextBlock Text="{Binding Name}" Width="120"/>
                            <TextBlock Text="{Binding Sex,Converter={StaticResource SexConverter}}" Width="60"/>
                        </StackPanel>
                    </DataTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    
    <StackPanel>
        <ListBox x:Name="listBoxStudent" Margin="5"/>
    </StackPanel>

**后台代码**

/// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
    
            List<Student> stuList = new List<Student>(){
                new Student(){ID="1",Name="Peter",Sex="0"},
                new Student(){ID="2",Name="Tom",Sex="1"},
                new Student(){ID="3",Name="Ben",Sex="0"}
            };
    
            this.listBoxStudent.ItemsSource = stuList;
        }
    
    }
    
    /// <summary>
    /// 学生类
    /// </summary>
    public class Student{
        public string ID{get;set;}
        public string Name { get; set; }
        public string Sex { get; set; }
    }