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WPF 数据Trigger/Setter with 日期比较
原标题:WPF DataTrigger/Setter with DateTime comparison
  • 时间:2011-04-04 12:04:02
  •  标签:
  • wpf
  • datagrid

我很想知道,它能否与世界森林论坛进行比较,理想的情况是,我喜欢根据它与目前日期的相关性来挑选我的数据网。 查阅过去的文件,绿色未来。 感谢任何帮助!

<dg:DataGrid Name="files_datagrid" DataContext="{Binding Source={StaticResource filelist_provider}}"         
ItemsSource="{Binding}" CanUserAddRows="False" AutoGenerateColumns="False" Grid.Row="1"> 
<Style TargetType="{x:Type dg:DataGridRow}">    <Style.Triggers>        
        <DataTrigger Binding="{Binding Path=[filedate]}" Value=">TODAY">            
            <Setter Property="Background" Value="Green" />      
        </DataTrigger>  
    </Style.Triggers> 
</Style>
最佳回答

我想你会更好地利用。 Value Converter.

与此类似:

[ValueConversion(typeof(DateTime), typeof(Brush))]
public class DateTimeToBrushConverter : IValueConverter
{
  public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
  {
    var dateTime = (DateTime)value;
    if (dateTime.Date < DateTime.Now)
      return Brushes.Red;
    if (dateTime.Date > DateTime.Now)
      return Brushes.Green;

    return Brushes.Black;
  }

  public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
  {
    throw new NotImplementedException();
  }
}

如果你感到喜欢的话,你可以把颜色作为参数,使之更加通用。

之后也适用:

<Style TargetType="{x:Type dg:DataGridRow}">
  <Setter Property="Background" 
          Value="{Binding Path=fileDate, 
            Converter={StaticResource dateTimeToBrushConverter}}" />
</Style>

如果是用你的资源设立托巴勒·托贝尔特。

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