在WPF Treeview中根据枚举绑定图标

Question

我在treeview TextBox,我想转换我的枚举:

<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=AcceptationStatusGlobalFlag}" />

public enum AcceptationStatusGlobalFlag
    {
        NotReady = 0,
        Ready = 1,
        AcceptedByAdmin=2
    }

到图标.将有3个图标,比如ready.jpg,notready.jpg和AcceptedByAdmin.jpg

国家和地区有泳池AcceptationStatusGlobalFlag,我想要显示此枚举/图标

            <TreeView Name="structureTree" SelectedItemChanged="structureTree_SelectedItemChanged" Grid.Row="0" Grid.Column="0" ItemsSource="{Binding}" Height="413" ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollBarVisibility="Visible" Width="Auto" PreviewMouseRightButtonUp="structureTree_PreviewMouseRightButtonUp" FontFamily="Verdana" FontSize="12">
                <TreeView.Resources>
                    <HierarchicalDataTemplate DataType="{x:Type ServiceMy:Country}" 
                              ItemsSource="{Binding Path=ListOfRegions}">
                        <StackPanel Orientation="Horizontal">
                            <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=Name}"/>
                <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" H:"/>
                <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=NumberOfHotels}"/>
                <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" "/>
                            <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" FG:"/>
                            <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=AcceptationStatusGlobalFlag}" />
                <!--<Button Name="BTNAddRegion" Height="20" Content="+" Click="BTNAddRegion_Click"></Button>-->
            </StackPanel>
                    </HierarchicalDataTemplate>
                    <HierarchicalDataTemplate DataType="{x:Type ServiceMy:Region}" 
                              ItemsSource="{Binding Path=ListOfProvinces}">
                        <StackPanel Orientation="Horizontal">
                            <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=Name}"/>
                <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" H:"/>
                <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=NumberOfHotels}"/>
                <TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" "/>
                <!--<Button Name="BTNAddProvince" Height="20" Content="+" Click="BTNAddProvince_Click"></Button>-->
            </StackPanel>


                    </DataTemplate>

                </TreeView.Resources>
            </TreeView>
        </GroupBox>

    </StackPanel>
</Grid>

Answer 1

创建一个值转换器

它将获取您的枚举值并返回相应图标的文件名.

[ValueConversion(typeof(AcceptationStatusGlobalFlag), typeof(string))]
public class AcceptationStatusGlobalFlagToIconFilenameConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        switch ((AcceptationStatusGlobalFlag)value)
        {
            case AcceptationStatusGlobalFlag.Ready:
                return "ready.jpg";
            case AcceptationStatusGlobalFlag.NotReady:
                return "notready.jpg";
            case AcceptationStatusGlobalFlag.AcceptedByAdmin:
                return "AcceptedByAdmin.jpg";
            default:
                return null;
        }

        // or
        return Enum.GetName(typeof(AcceptationStatusGlobalFlag), value) + ".jpg";
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}

您需要在XAML中添加对此转换器的引用

<Window ... xmlns:converters="clr-namespace:App.Converters" ...>
    <Window.Resources>
        <converters:AcceptationStatusGlobalFlagToIconFilenameConverter x:Key="IconConverter"/>
    </Window.Resources>

替换您的TextBlock

<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=AcceptationStatusGlobalFlag}" />

用图像告诉它使用你的转换器

<Image Source="{Binding AcceptationStatusGlobalFlag, Converter={StaticResource IconConverter}}"/>