WPF Datagrid-与其他列相关的列绑定 [英] WPF Datagrid - Column Binding related to other columns
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问题描述
我有一个带有多个列的DataGrid。这些列中的某些内容类似于
I have a DataGrid with several Columns. Some of these columns are something like
state|Color1|Color2|Color3|...
我想这样做:
If state==1 => RowForeground = Color1
If state==2 => RowForeground = Color2
If state==3 => RowForeground = Color3
...
我可以想到的第一个解决方案是使用多个数据触发器:
The very first solution I can think is to use several Data Triggers:
<DataTrigger Binding="{Binding Path=state}" Value="0">
<Setter Property="Foreground" Value="{Binding Path=color0, Converter={StaticResource str2clrConverter}}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=state}" Value="1">
<Setter Property="Foreground" Value="{Binding Path=color1, Converter={StaticResource str2clrConverter}}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=state}" Value="2">
<Setter Property="Foreground" Value="{Binding Path=color2, Converter={StaticResource str2clrConverter}}"/>
</DataTrigger>
[...]
是否有更好的解决方案?
Is there a better solution?
推荐答案
多绑定就是这样!
这是我的解决方法:
<Setter Property="Foreground">
<Setter.Value>
<MultiBinding Converter="{StaticResource frgConverter}">
<Binding Path="state"/>
<Binding Path="color1"/>
<Binding Path="color2"/>
<Binding Path="color3"/>
</MultiBinding>
</Setter.Value>
</Setter>
和转换器:
public class GridForegroundConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
int iColor;
int nState = System.Convert.ToInt32(values[0]);
if (nState < 0 || nState > 3)
throw new ArgumentOutOfRangeException("State");
iColor = System.Convert.ToInt32(values[nState + 1]);
byte[] bytes = BitConverter.GetBytes(iColor);
Color color = Color.FromRgb(bytes[2], bytes[1], bytes[0]);
return new SolidColorBrush(color);
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
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