可以binidng属性的属性【项目】

1:binding后台bool[]数据以及后台ObservableCollection数据

分别见下面xaml的Visibility和Text的Binding

public bool[] RubberTypeLegends
        {
            get
            {
                bool[] result = new bool[] {false,false,false };
                for (int i = 0; i < ResultItems.Count; i++)
                {
                    result[i] = true;
                }
                return result;
            }
        }

...
<StackPanel x:Name="OSL_Legend"
                        Margin="30,0,0,0"
                        Orientation="Horizontal"
                        Visibility="{Binding RubberTypeLegends[1],
                                             Converter={StaticResource boolToVisibilityConverter}}">
                <Rectangle Width="10"
                           Height="10"
                           Fill="Blue" />
                <TextBlock Margin="5,0,0,0"
                           FontSize="9pt"
                           Style="{StaticResource Univers57_Condensed}"
                           Text="{Binding ResultItems[1].RubberType}" />
            </StackPanel>
...

private ObservableCollection<OilSwellResultsItemViewModel> _resultItems;

        public ObservableCollection<OilSwellResultsItemViewModel> ResultItems
        {
            get
            {
                if (_resultItems == null)
                    _resultItems = new ObservableCollection<OilSwellResultsItemViewModel>();
                return _resultItems;
            }

            set
            {
                if (_resultItems != value)
                {
                    _resultItems = value;
                    this.RaisePropertyChanged("ResultItems");
                }
            }
        }

public class OilSwellResultsItemViewModel : NotificationObject
{
...
private string _rubberType;

        public string RubberType
        {
            get { return _rubberType; }
            set
            {
                if (_rubberType != value)
                {
                    _rubberType = value;
                    this.RaisePropertyChanged("RubberType");
                }
            }
        }
...
}

2：binding wpf control自己的属性

注意Binding="{Binding Items.Count, ElementName=DataGrid}"的ElementName是指向DataGrid

<ControlTemplate.Triggers>
            <DataTrigger Binding="{Binding Items.Count, ElementName=DataGrid}" Value="1">
                <Setter TargetName="OS_Legend" Property="Visibility" Value="Visible" />
                <Setter TargetName="OSL_Legend" Property="Visibility" Value="Collapsed" />
                <Setter TargetName="OSLSR_Legend" Property="Visibility" Value="Collapsed" />
            </DataTrigger>
            <DataTrigger Binding="{Binding Items.Count, ElementName=DataGrid}" Value="2">
                <Setter TargetName="OS_Legend" Property="Visibility" Value="Visible" />
                <Setter TargetName="OSL_Legend" Property="Visibility" Value="Visible" />
                <Setter TargetName="OSLSR_Legend" Property="Visibility" Value="Collapsed" />
            </DataTrigger>
            <DataTrigger Binding="{Binding Items.Count, ElementName=DataGrid}" Value="3">
                <Setter TargetName="OS_Legend" Property="Visibility" Value="Visible" />
                <Setter TargetName="OSL_Legend" Property="Visibility" Value="Visible" />
                <Setter TargetName="OSLSR_Legend" Property="Visibility" Value="Visible" />
            </DataTrigger>
        </ControlTemplate.Triggers>