Question

习俗控制我试图约束我的项目。项目来源和错误。在这方面,模板如何看待:

<Style TargetType="controls:IdattFilterBox">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="controls:IdattFilterBox">
                    <ScrollViewer HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Auto">
                        <ItemsControl x:Name="PART_ItemsControl">
                            <ItemsControl.ItemTemplate>
                                <DataTemplate>
                                    <Grid HorizontalAlignment="Stretch">
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="*" />
                                            <ColumnDefinition Width="*" />
                                            <ColumnDefinition Width="*" />
                                            <ColumnDefinition Width="*" />
                                        </Grid.ColumnDefinitions>
                                        <TextBlock Text="{Binding Caption}" />
                                        <ComboBox Grid.Column="1">
                                            <ComboBoxItem Content="Contains" />
                                            <ComboBoxItem Content="Begins with" />
                                            <ComboBoxItem Content="Ends with" />
                                        </ComboBox>
                                        <TextBox Grid.Column="2" Text="{Binding FieldFilter1, Mode=TwoWay}" />
                                        <TextBox Grid.Column="3" Text="{Binding FieldFilter2, Mode=TwoWay}" />
                                    </Grid>
                                </DataTemplate>
                            </ItemsControl.ItemTemplate>
                                                                                                                            <Border Grid.ColumnSpan="2" x:Name="ValidationErrorElement" BorderBrush="#FFDB000C" BorderThickness="1" CornerRadius="1" Visibility="Collapsed">
                            <ToolTipService.ToolTip>
                                <ToolTip x:Name="validationTooltip" DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" PlacementTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}" Template="{StaticResource ValidationToolTipTemplate}">
                                    <ToolTip.Triggers>
                                        <EventTrigger RoutedEvent="Canvas.Loaded">
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="IsHitTestVisible" Storyboard.TargetName="validationTooltip">
                                                        <DiscreteObjectKeyFrame KeyTime="0">
                                                            <DiscreteObjectKeyFrame.Value>
                                                                <System:Boolean>true</System:Boolean>
                                                            </DiscreteObjectKeyFrame.Value>
                                                        </DiscreteObjectKeyFrame>
                                                    </ObjectAnimationUsingKeyFrames>
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </EventTrigger>
                                    </ToolTip.Triggers>
                                </ToolTip>
                            </ToolTipService.ToolTip>
                            <Grid Background="Transparent" HorizontalAlignment="Right" Height="12" Margin="1,-4,-4,0" VerticalAlignment="Top" Width="12">
                                <Path Data="M 1,0 L6,0 A 2,2 90 0 1 8,2 L8,7 z" Fill="#FFDC000C" Margin="1,3,0,0"/>
                                <Path Data="M 0,0 L2,0 L 8,6 L8,8" Fill="#ffffff" Margin="1,3,0,0"/>
                            </Grid>
                        </Border>
                        </ItemsControl>
                    </ScrollViewer>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

在试图确定本部分的法典中,

this.WrapperItemsControl.ItemsSource = filterData;

在这一行文上,我有错误(电文标上)。为什么我能够确定项目,这一错误意味着什么? 我想对数据模板进行控制,以约束存储在<代码>filterData上的物体。

EDIT:

第一部分:项目

this.WrapperItemsControl = GetTemplateChild(PartItemsControl) as ItemsControl;

<><> ><>>>

Screenshot showing that there is one item (Border?) Where does it come from?! enter image description here

http://www.ohchr.org。

DOH! 我把验证边界放在错误的现场。

Answer 1

如果你手工增加项目“Control”,你可以使用项目。例如,如果你尝试的话,你会犯错误:

<ItemsControl ItemsSource="{Binding MyItems}">
    <ListBoxItem>Item1</ListBoxItem>
    <ListBoxItem>Item2</ListBoxItem>
</ItemsControl>

你可能认为你没有这样做,但你实际上就是这样做的。您在“Control”项目上增列一个项目,该项目为“数据模板”。展望:

<ItemsControl ...>
    <DataTemplate ... />

该辛加税是指“在项目财产中添加数据”。 (如果项目为Control的违约财产,那么在项目Control下,如果你没有具体说明的话,就添加到项目上。)

I think you intended to assign that DataTemplate to the ItemsControl s ItemTemplate property, rather than adding it to Items. Try this instead:

<ItemsControl ...>
    <ItemsControl.ItemTemplate>
        <DataTemplate ... />
    </ItemsControl.ItemTemplate>
</ItemsControl>

友情链接