影像装订 [英] Image binding

问题描述

我正在尝试自定义组合框，因此我编辑了它的模板，因此我总是可以在组合框的标题中显示图像，我通过在模板中放置Image而不是ContentPresenter来进行管理，但是它是一个模板，因此我将创建一些来自它的组合框，每个组合框都有自己的图像，我如何管理呢?使用每个新的组合框，我都可以设置自己的图像?
(对不起，我的英语！):

Hi,
I''m trying to customize combobox, I edited its template so I can always display an image in the header of the combobox, I managed this by putting Image instead of ContentPresenter in the template, but its a template and I will create number of comboboxes from it and each have its own image, HOW I can manage that, with each new combobox i can set its own image??
(sorry for my English!):

<ControlTemplate TargetType="ComboBox" x:Key="CustomBTemplate">
  <Grid>
    <Border x:Name="ContentPresenterBorder">
      <Grid>
        <ToggleButton x:Name="DropDownToggle" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="-1" HorizontalContentAlignment="Right">
          <Path x:Name="BtnArrow" Height="4" Width="8" Stretch="Uniform" Margin="0,0,6,0" Fill="Black"

Data="F1 M 300,-190L 310,-190L 305,-183L 301,-190 Z " />
        </ToggleButton>
        <Image Width="35" Height="35" Source="somepicture.png" HorizontalAlignment="Left"/>
      </Grid>
    </Border>
    <Popup x:Name="Popup">
      <Border x:Name="PopupBorder" HorizontalAlignment="Stretch" Height="Auto" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="Black" Background="White" CornerRadius="3">
        <ScrollViewer x:Name="ScrollViewer" BorderThickness="0" Padding="1">
          <ItemsPresenter/>
        </ScrollViewer>
      </Border>
    </Popup>
  </Grid>
</ControlTemplate>

推荐答案

您需要创建一个AttachedDependencyProperty，将其应用于ComboBox的顶层，然后在ControlTemplate中与之绑定类似的东西:

You need to create an AttachedDependencyProperty that you''ll apply to the top level of the ComboBox and then in your ControlTemplate you''ll bind to with something like:

<Image Width="35" Height="35" Source="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(y:MyClass.ComboImage)}" HorizontalAlignment="Left"/>

您可以在此处的技巧中找到一些与笔刷非常相似的东西. [ ^ ].

You can find something very similiar dealing with brushes in my tip here.[^].

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