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早安伙计们,

我有几个 ComboBoxes 绑定到 TimeSpan 列表。我正在使用 IValueConverter 和 ItemTemplate 格式化 TimeSpan。我想知道是否有更简单的方法来格式化 TimeSpan。这是我目前正在做的事情。

public class TimeSpanConverter : IValueConverter
{
    #region IValueConverter Members

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value == null)
            return string.Empty;

        TimeSpan t = TimeSpan.MinValue;
        TimeSpan.TryParse(value.ToString(), out t);
        return "{0:00}:{1:00}".F(t.Hours,t.Minutes);
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        return TimeSpan.Parse(value.ToString());
    }

    #endregion
}

<Canvas>
    <Canvas.Resources>
      <bc:TimeSpanConverter x:Key="ts" />
      <DataTemplate x:Key="TimeSpanTemplate">
        <TextBlock Text="{Binding ., Converter={StaticResource ts}}" />
      </DataTemplate>

    </Canvas.Resources>
    <TextBlock Canvas.Left="6"
               Canvas.Top="6"
               Height="21"
               Name="textBlock4"
               Text="Begin"
               Width="40" />

    <TextBlock Canvas.Left="81"
               Canvas.Top="6"
               Height="21"
               Name="textBlock5"
               Text="End"
               Width="40" />
    <ComboBox Canvas.Left="7"
              Canvas.Top="25"
              Height="23"
              Name="TimeBeginCombo"
              ItemTemplate="{StaticResource TimeSpanTemplate}"
              SelectedItem="{Binding TimeBegin}"                  
              Width="68" />
    <ComboBox Canvas.Left="81"
              Canvas.Top="25"
              Height="23"
              Name="TimeEndCombo"
              ItemTemplate="{StaticResource TimeSpanTemplate}"
              SelectedItem="{Binding TimeEnd}"
              Width="68" />

  </Canvas>
</GroupBox>

4

1 回答 1

2

你绑定的是 typeTimeSpan吗?如果是这样,那么转换器可以简单得多

public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
    if (!(value is TimeSpan))
        return string.Empty;

    TimeSpan t = (TimeSpan)value;
    return "{0:00}:{1:00}".F(t.Hours,t.Minutes);
}

此外,一般性评论 - 你确定你需要在画布上布局你的 UI 并使用绝对坐标吗?:)

于 2010-02-08T17:55:13.173 回答