Question

wpf中的convert怎么用

Answer 1

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

[csharp] view plain copy
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

[html] view plain copy
<Window.Resources>
<!--引用资源-->
<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
[csharp] view plain copy
/// <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; }
}