我有一个WPF DataGrid中的列不同的计数。 我要的颜色取决于由值的单个细胞。 例如:如果该细胞的值是0,则红色。
这是我的实验:
<DataGrid Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" x:Name="DataGrid" SelectionUnit="Cell">
<DataGrid.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Style.Triggers>
<!--experiment 1 -->
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Value, NotifyOnSourceUpdated=True, NotifyOnTargetUpdated=True}" Value="0">
<Setter Property="Background" Value="LimeGreen"/>
</DataTrigger>
<!--experiment 2 -->
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Content, NotifyOnSourceUpdated=True, NotifyOnTargetUpdated=True}" Value="0">
<Setter Property="Background" Value="LimeGreen"/>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.CellStyle>
</DataGrid>
只需使用一个值转换器(与细胞值作为参数),返回你想要的颜色。
<DataGrid>
<DataGridCell Background="{Binding CellValueField, Converter={StaticResource YourDefinedValueToColorConverter}}" />
</DataGrid>
编辑:终于得到它的工作。
转换器和样式定义:
<Window.Resources>
<c:ValueToColorConverter x:Key="ValueToColorConverter"/>
<Style x:Key="CellStyle" TargetType="DataGridCell">
<Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Converter={StaticResource ValueToColorConverter}}" />
</Style>
</Window.Resources>
在DataGrid:
<DataGrid HorizontalAlignment="Left"
Margin="10,10,0,0"
VerticalAlignment="Top"
Loaded="DataGrid_Loaded">
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="Background" Value="{Binding Converter={StaticResource ValueToColorConverter}}" />
</Style>
</DataGrid.CellStyle>
</DataGrid>
和转换器:
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
var cell = value as Order;
if (cell != null && cell.Size > 80)
return new SolidColorBrush(Colors.Red);
else return new SolidColorBrush(Colors.Yellow);
}
我用DataGrid_Loaded
方法与封装在一个示例类一些随机数据来填充数据网格:
class Order
{
public int Size { get; set; }
}
而结果是:
使用值转换器,就像这样:
<DataGridCell Background="{Binding CellValueField, Converter={StaticResource IntegerToColorValueConverter}}" />
和:
public class IntegerToColorValueConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
switch ((int)value)
{
case 1: return Color.Red; break;
case 2: return Color.Yellow; break;
Default: return Color.White; break;
}
}
}