在我们的应用程序中,我们使用datagrids来布局填充了模板化内容和按钮的行,但是间歇性地出现问题,其中一些列有时会将自身的大小调整为列的最小宽度,有时会调整到列标题内容宽度。这似乎与设置itemssource的时间以及加载事件发生的时间有关,但我无法确定它的确定。
行为不正确的示例
正确行为的示例
itemssource绑定到viewmodel上的ObservableCollection,它使用async和await关键字以及dataservice来填充异步。
我试图通过隐藏初始化中的所有列来解决问题,然后一旦设置了itemssource并调用了isloaded,将所有列设置回初始可见性,这似乎有一些影响,但没有解决问题完全。
列定义的xaml
<Style x:Key="MainDataGridColumnHeader" TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridColumnHeader}">
<TextBlock Text="{TemplateBinding Content}" Foreground="{StaticResource HighlightedTextBrush}"
Background="Transparent"
FontSize="16" FontWeight="Bold" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="MainDataGridRow" TargetType="{x:Type DataGridRow}">
<Setter Property="Background" Value="{StaticResource LightBackgroundBrush}" />
<Setter Property="BorderBrush" Value="{StaticResource Faded10MidBackgroundBrush}"/>
<Setter Property="BorderThickness" Value="0,0,0,1" />
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="Padding" Value="5"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridRow}">
<Border x:Name="DGR_Border"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}"
SnapsToDevicePixels="True"
CornerRadius="0"
Margin="0,5"
Width="{Binding ActualWidth, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}">
<SelectiveScrollingGrid>
<SelectiveScrollingGrid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</SelectiveScrollingGrid.ColumnDefinitions>
<SelectiveScrollingGrid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</SelectiveScrollingGrid.RowDefinitions>
<DataGridCellsPresenter Grid.Column="1"
ItemsPanel="{TemplateBinding ItemsPanel}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
<DataGridDetailsPresenter Grid.Column="1"
Grid.Row="1"
SelectiveScrollingGrid.SelectiveScrollingOrientation="{Binding AreRowDetailsFrozen, ConverterParameter={x:Static SelectiveScrollingOrientation.Vertical}, Converter={x:Static DataGrid.RowDetailsScrollingConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"
Visibility="{TemplateBinding DetailsVisibility}" />
<DataGridRowHeader Grid.RowSpan="2"
SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.Row}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}" />
</SelectiveScrollingGrid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="MainDataGridCell" TargetType="{x:Type DataGridCell}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Foreground" Value="{StaticResource TextBrush}"/>
<Setter Property="Focusable" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</Style.Triggers>
</Style>
列标题,行和单元格样式的xaml
<DataGrid.Columns>
<DataGridTemplateColumn x:Name="dateColumn" Header="Race Time" MinWidth="110" Width="Auto" CellTemplate="{StaticResource RacesRaceTimeTemplate}" />
<DataGridTemplateColumn x:Name="iconColumn" Width="62" CellTemplate="{StaticResource RacesRaceIconTemplate}"/>
<DataGridTemplateColumn x:Name="nameColumn" Width="*" CellTemplate="{StaticResource RacesRaceDescriptionTemplate}"/>
<DataGridTemplateColumn x:Name="favsColumn" Width="auto" Header="Fav / 2nd Fav" CellTemplate="{StaticResource RacesFavSelectionsTemplate}" />
<DataGridTemplateColumn x:Name="additionalColumn" Width="78" CellTemplate="{StaticResource RacesAdditionalOptionsTemplate}" />
</DataGrid.Columns>
目前我可以通过为列设置硬编码宽度来解决问题,但这不是一个合理的解决方案,因为我们将有可变宽度内容。
有没有人能解决这个问题?
答案 0 :(得分:1)
您是否尝试设置所有列的最小宽度,然后根据百分比
指定宽度<DataGrid.Columns>
<DataGridTemplateColumn x:Name="dateColumn" MinWidth="110" Width="*" Header="Race Time" CellTemplate="{StaticResource RacesRaceTimeTemplate}" />
<DataGridTemplateColumn x:Name="iconColumn" MinWidth="62" Width="2*" CellTemplate="{StaticResource RacesRaceIconTemplate}"/>
<DataGridTemplateColumn x:Name="nameColumn" MinWidth="500" Width="3*" CellTemplate="{StaticResource RacesRaceDescriptionTemplate}"/>
<DataGridTemplateColumn x:Name="favsColumn" MinWidth="232" Width="3*" Header="Fav / 2nd Fav" CellTemplate="{StaticResource RacesFavSelectionsTemplate}" />
<DataGridTemplateColumn x:Name="additionalColumn" MinWidth="78" Width="*" CellTemplate="{StaticResource RacesAdditionalOptionsTemplate}" />
</DataGrid.Columns>
答案 1 :(得分:1)
您可能会看到此answer。
尝试在设置ItemsSource
后以编程方式更新宽度列foreach (DataGridColumn c in dg.Columns)
c.Width = 0;
// Update your DG's source here
foreach (DataGridColumn c in dg.Columns)
c.Width = DataGridLength.Auto;
然后UpdateLayout你的DataGrid。