8
我有以下代码:使用IMultiValueConverter多个CommandParameters传递给视图模型
<DataGridTemplateColumn Header="Security">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Name="Security" Content="{Binding Path=totalSecurities}" Command="{Binding Source={StaticResource viewModel}, Path=filterGridCommand}">
<Button.CommandParameter>
<MultiBinding Converter="{StaticResource PassThroughConverter}">
<Binding Path="sector"/>
<Binding ElementName="Security" Path="Name"/>
</MultiBinding>
</Button.CommandParameter>
</Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
下面是PassThroughConverter代码:
public class PassThroughConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameters, CultureInfo culture)
{
return values;
}
public object[] ConvertBack(object value, Type[] targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
当我尽快,因为它击中的返回值线调试,正确的值在数组 ,但是当我按下触发filtergridcommand的按钮时,返回的值都是null?任何人都可以帮忙谢谢。
感谢菲尔,这解决了我的问题! – bewilderedprogrammer