在我问过的上一个问题中,我希望能够移动 gridsplitter 以展开包含图像列表框的扩展器,这样当它展开时,图像会根据可用空间量调整大小。在帮助下,我能够使调整大小功能正常工作,但现在的问题是,当程序最初启动时,图像是全尺寸而不是缩略图大小。有没有办法设置扩展器的初始宽度,以便图像最初显示为大约 175 像素的缩略图?
列定义:
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="25" Width="*" />
<ColumnDefinition MinWidth="5" Width="5" />
<ColumnDefinition Width="2*" />
<ColumnDefinition MinWidth="5" Width="5" />
<ColumnDefinition MinWidth="25" Width="*" />
</Grid.ColumnDefinitions>
0:扩展器
1:gridsplitter
2:文本框
3:gridsplitter
4:扩展器(带有图像的文本框。)
XAML:
<GridSplitter
Name="gridSplitter2"
Width="10"
Margin="0,0,0,0"
Grid.Column="3"
IsEnabled="True"
HorizontalAlignment="Center"/>
<Expander
Style="{DynamicResource ExpanderStyle}"
Name="pictureExpander"
IsExpanded="True"
Grid.Column="4"
ExpandDirection="Left"
Collapsed="pictureExpander_Collapsed"
Expanded="pictureExpander_Expanded" >
<ListBox
Name="photoList"
ItemsSource="{Binding Source={StaticResource PhotoBin}}"
IsSynchronizedWithCurrentItem="True"
ScrollViewer.CanContentScroll="False"
ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemContainerStyle>
<Style TargetType="{x:Type ListBoxItem}">
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Yellow" />
</Style.Resources>
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="BorderBrush" Value="Black"/>
<Setter Property="BorderThickness" Value="5"/>
</Trigger>
</Style.Triggers>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
<Image
Name="thumbnailImage"
Source="{Binding FileLocation}"
Margin="5"
Stretch="UniformToFill"
StretchDirection="Both"
HorizontalAlignment="Stretch"
/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Expander>