在数据网格的最后一个数据列上放置上下文菜单,以控制WPF中其他列的可见性。

您可以使用转换器实现这一点:

class VisibilityToBooleanConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        Visibility visibility = (Visibility)value;
        return visibility == Visibility.Visible;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        bool b = (bool)value;
        return b ? Visibility.Visible : Visibility.Hidden;
    }
}

…和一些XAML标记:

<DataGridTemplateColumn>
    <DataGridTemplateColumn.Header>
        <Grid Background="Gray" Width="25" Height="25"
              Tag="{Binding Columns, ElementName=MyGrid}">
            <Grid.ContextMenu>
                <ContextMenu ItemsSource="{Binding PlacementTarget.Tag, RelativeSource={RelativeSource Self}}">
                    <ContextMenu.ItemTemplate>
                        <DataTemplate>
                            <CheckBox x:Name="chk">
                                <CheckBox.IsChecked>
                                    <Binding Path="Visibility">
                                        <Binding.Converter>
                                            <local:VisibilityToBooleanConverter />
                                        </Binding.Converter>
                                    </Binding>
                                </CheckBox.IsChecked>
                                <CheckBox.Content>
                                    <TextBlock Text="{Binding Header}" />
                                </CheckBox.Content>
                            </CheckBox>
                            <DataTemplate.Triggers>
                                <!-- hide the last column in the ContentMenu-->
                                <DataTrigger Binding="{Binding DisplayIndex}" Value="5">
                                    <Setter TargetName="chk" Property="Visibility" Value="Collapsed" />
                                </DataTrigger>
                            </DataTemplate.Triggers>
                        </DataTemplate>
                    </ContextMenu.ItemTemplate>
                </ContextMenu>
            </Grid.ContextMenu>
        </Grid>
    </DataGridTemplateColumn.Header>
</DataGridTemplateColumn>

替换 Grid 在示例标记中,使用汉堡包按钮或任何希望用户单击以显示 ContextMenu .

您可以使用以下行中的某些内容:

<expander grid.column=“0”expanddirection=“right”width=“auto”isexpanded=“false”header=“options”background=“ecececec”padding=“5”>
<堆叠面板>

<label content=“columns:”fontweight=“semibold”/>
<itemsControl itemssource=“binding elementname=datagridname,path=columns”grid.issharedSizeScope=“true”margin=“5”>
<itemscontrol.itemspanel>
<项模板lt;itemspaneltemplate>
<stackpanel orientation=“垂直”/>
</itemspaneltemplate>
</itemscontrol.itemspanel>
<itemsControl.itemTemplate>
<数据模板>
<网格>
<grid.columndefinitions>
<columnDefinition sharedsizeGroup=“A”/>
<columnDefinition sharedsizeGroup=“b”/>
</grid.columndefinitions>
<textBlock text=“绑定头”margin=“20,5,5,0”/>gt;
<checkbox grid.column=“1”ischecked=“绑定可见性,converter=cnv:customVisibilityToBool collapsedValue=false,visibleValue=true”
margin=“5”horizontallight=“center”verticalalightment=“center”/>
和/格栅& GT;
</datatemplate>
</itemscontrol.itemstemplate>
</itemscontrol>
</stackpanel>
</expander>
< /代码> 

转换器:

class customVisibilityToBool:markupExtension,ivalueConverter
{
public bool visiblevalue_get;set;
public bool collapsedvalue get;set;
public bool hiddenvalue_get;set;
公共重写对象ProvideValue(IServiceProvider ServiceProvider)
{
归还这个;
}
公共对象转换(对象值、类型TargetType、对象参数、CultureInfo Culture)
{
如果(值作为可见性?)==visibility.visible)返回visibleValue;
否则,如果(值作为可见性?)==visibility.hidden)返回hiddenvalue;
否则,如果(值作为可见性?)==visibility.collapsedvalue)返回collapsedvalue;

返回binding.donothing;
}
公共对象转换回(对象值、类型TargetType、对象参数、System.Globalization.CultureInfo Culture)
{
如果((值为bool?)==visibleValue)返回visibility.visible;
否则,如果((值为bool?)==hiddenvalue)返回visibility.hidden;
否则,如果((值为bool?)==collapsedvalue)返回visibility.collapsed;

返回binding.donothing;
}
}
< /代码> 

如果将其放在datagrid



转换器:

class CustomVisibilityToBool : MarkupExtension, IValueConverter
{
    public bool VisibleValue { get; set; }
    public bool CollapsedValue { get; set; }
    public bool HiddenValue { get; set; }
    public override object ProvideValue(IServiceProvider serviceProvider)
    {
        return this;
    }
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if ((value as Visibility?) == Visibility.Visible) return VisibleValue;
        else if ((value as Visibility?) == Visibility.Hidden) return HiddenValue;
        else if ((value as Visibility?) == Visibility.Collapsed) return CollapsedValue;

        return Binding.DoNothing;
    }
    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if ((value as bool?) == VisibleValue) return Visibility.Visible;
        else if ((value as bool?) == HiddenValue) return Visibility.Hidden;
        else if ((value as bool?) == CollapsedValue) return Visibility.Collapsed;

        return Binding.DoNothing;
    }
}


如果你把它放在DataGrid看起来像: