C# 无法在WPF中的DevExpress DxTabControl中获取当前活动/选定的选项卡项
我有一个WPF应用程序，我正在尝试使用FlaUI将其自动化。我面临C# 无法在WPF中的DevExpress DxTabControl中获取当前活动/选定的选项卡项,c#,wpf,devexpress,devexpress-wpf,flaui,C#,Wpf,Devexpress,Devexpress Wpf,Flaui,我有一个WPF应用程序，我正在尝试使用FlaUI将其自动化。我面临dxtab控件的问题。我已向DxTabControl提供了自动化ID。我正在使用DXTabControl.ItemHeaderTemplate动态生成TabItems。 根据DevExpress团队的说法，DXTabControl.ItemHeaderTemplate不支持AutoamtionPeer，因此添加了一个自定义实现来覆盖其默认行为 现在，我可以在Inspect.exe中看到TabControl和TabItems。 现在
dxtab控件的问题DxTabControl自动化IDDXTabControl.ItemHeaderTemplateTabItemsDXTabControl.ItemHeaderTemplateAutoamtionPeerInspect.exeTabControlTabItems活动/选定的TabItemXAML<dx:DXTabControl AutomationProperties.AutomationId="ViewsParentTabControl"
MaxWidth="4000"
MaxHeight="4000"
Margin="1,0,-1,0"
Focusable="False"
ItemsSource="{Binding OpenViews}"
SelectedIndex="{Binding SelectedTabIndex}"
TabContentCacheMode="CacheTabsOnSelecting">
<dx:DXTabControl.ItemHeaderTemplate>
<DataTemplate DataType="viewModels1:OpenViewDefinitionViewModel">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<TextBlock Name="CreatedViewName"
MaxWidth="100"
Text="{Binding Data.ViewDefinition.Name}"
TextTrimming="CharacterEllipsis"
ToolTip="{Binding DisplayName}" />
<TextBlock Grid.Row="0" Grid.Column="1"><Run Text=" [" /><Run Text="{Binding ItemsCount, FallbackValue=0, Mode=OneWay}" /><Run Text="]" /></TextBlock>
<controls2:ProgressIndicator AutomationProperties.AutomationId="ProgressCurrentView"
Grid.Row="0"
Grid.Column="3"
Width="14"
Margin="4,0,0,0"
VerticalAlignment="Center"
CircleBorder="{StaticResource ListBoxItem.Foreground}"
CircleFill="{StaticResource ListBoxItem.Foreground}"
IndicatorEnabled="{Binding IsDataLoading}" />
<Button AutomationProperties.AutomationId="CloseCurrentViewButton"
Grid.Row="0"
Grid.Column="2"
Width="10"
Height="10"
Margin="10,1,0,0"
Padding="0"
HorizontalAlignment="Right"
BorderThickness="0"
Command="{Binding DataContext.CloseItemCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=dx:DXTabControl}}"
CommandParameter="{Binding}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Close">
<Path
Data="F1 M 26.9166,22.1667L 37.9999,33.25L 49.0832,22.1668L 53.8332,26.9168L 42.7499,38L 53.8332,49.0834L 49.0833,53.8334L 37.9999,42.75L 26.9166,53.8334L 22.1666,49.0833L 33.25,38L 22.1667,26.9167L 26.9166,22.1667 Z"
Fill="White"
Stretch="Fill" />
</Button>
</Grid>
</DataTemplate>
</dx:DXTabControl.ItemHeaderTemplate>
<dx:DXTabControl.ItemTemplate>
<DataTemplate DataType="viewModels1:OpenViewDefinitionViewModel">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<local:VoyagesGridControl />
<local:VoyageValidationUserControl
Grid.Row="1"
Grid.Column="0"
MinHeight="100"
MaxHeight="300"
Visibility="{Binding Path=IsVoyageValidationShowing, FallbackValue=Collapsed, Converter={StaticResource BooleanToVisibilityConverter}}" />
<local:VoyageHistoryUserControl
Grid.Row="2"
Grid.Column="0"
MinHeight="300"
MaxHeight="300"
Visibility="{Binding Path=IsVoyageHistoryShowing, FallbackValue=Collapsed, Converter={StaticResource BooleanToVisibilityConverter}}" />
<local:VesselHistoryUserControl
Grid.Row="3"
Grid.Column="0"
MinHeight="300"
MaxHeight="300"
Visibility="{Binding Path=IsVesselHistoryShowing, FallbackValue=Collapsed, Converter={StaticResource BooleanToVisibilityConverter}}" />
<local:VoyageEvents
Grid.Row="0"
Grid.RowSpan="3"
Grid.Column="1"
VerticalAlignment="Top"
Visibility="{Binding Path=IsVoyageEventsShowing, FallbackValue=Collapsed, Converter={StaticResource BooleanToVisibilityConverter}}" />
<controls2:ProgressIndicator AutomationProperties.AutomationId="showProgressForLoadingViews"
Grid.Row="0"
Grid.RowSpan="3"
Grid.Column="0"
Width="80"
HorizontalAlignment="Center"
VerticalAlignment="Center"
CircleBorder="{StaticResource ListBox.BorderBrush}"
CircleFill="{StaticResource ListBox.BorderBrush}"
IndicatorEnabled="{Binding IsDataLoading}" />
<!-- Buttons -->
<Grid Grid.Row="4" Grid.Column="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<StackPanel
Grid.Column="0"
VerticalAlignment="Center"
Orientation="Horizontal">
<TextBlock Style="{StaticResource MwTextBlockLabelStyle}" Text="Last Refresh:" />
<TextBlock
Margin="2,0,4,0"
VerticalAlignment="Center"
Text="{Binding LoadDate, StringFormat=G}" />
</StackPanel>
<Button AutomationProperties.AutomationId="AddNewVoyageButton"
Grid.Row="0"
Grid.Column="1"
Padding="0"
Command="{Binding AddVoyagesCommand}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Add a new voyage to this View (ALT + A)">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Add}" />
<Label Style="{StaticResource MwLabelStyle}">_Add</Label>
</StackPanel>
</Button>
<Button AutomationProperties.AutomationId="refreshVoyageButton"
Grid.Row="0"
Grid.Column="2"
Padding="0"
Command="{Binding RefreshVoyagesCommand}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Refresh the this View (modified entries are left unchanged)">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Refresh}" />
<TextBlock Style="{StaticResource MwTextBlockLabelStyle}" Text="Refresh" />
</StackPanel>
</Button>
<Button AutomationProperties.AutomationId="showVoyageHistroyButton"
Grid.Column="4"
Margin="2,2,2,2"
Padding="0"
VerticalAlignment="Center"
Command="{Binding ShowVoyageHistoryCommand}"
Focusable="False"
ToolTip="Show the selected voyage's change history"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource ShowVoyageHistory}" />
<TextBlock
Style="{StaticResource MwTextBlockLabelStyle}"
Text="Hide Voyage History"
Visibility="{Binding IsVoyageHistoryShowing, Converter={StaticResource BooleanToVisibilityConverter}}" />
<TextBlock
Style="{StaticResource MwTextBlockLabelStyle}"
Text="Show Voyage History"
Visibility="{Binding IsVoyageHistoryShowing, Converter={StaticResource MwBoolToVisibilityConverterReverse}}" />
</StackPanel>
</Button>
<Button AutomationProperties.AutomationId="showVesselHistroyButton"
Grid.Column="5"
Margin="2,2,2,2"
Padding="0"
VerticalAlignment="Center"
Command="{Binding ShowVesselHistoryCommand}"
Focusable="False"
ToolTip="Show the selected vessel's voyage history"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource ShowVesselHistory}" />
<TextBlock
Style="{StaticResource MwTextBlockLabelStyle}"
Text="Hide Vessel History"
Visibility="{Binding IsVesselHistoryShowing, Converter={StaticResource BooleanToVisibilityConverter}}" />
<TextBlock
Style="{StaticResource MwTextBlockLabelStyle}"
Text="Show Vessel History"
Visibility="{Binding IsVesselHistoryShowing, Converter={StaticResource MwBoolToVisibilityConverterReverse}}" />
</StackPanel>
</Button>
<Button AutomationProperties.AutomationId="showVoyageButton"
Grid.Column="6"
Margin="2,2,2,2"
Padding="0"
VerticalAlignment="Center"
Command="{Binding ShowVesselVisitsCommand}"
Focusable="False"
ToolTip="Show the selected voyage's events"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Anchor}" />
<TextBlock
Style="{StaticResource MwTextBlockLabelStyle}"
Text="Hide Voyage Events"
Visibility="{Binding IsVoyageEventsShowing, Converter={StaticResource BooleanToVisibilityConverter}}" />
<TextBlock
Style="{StaticResource MwTextBlockLabelStyle}"
Text="Show Voyage Events"
Visibility="{Binding IsVoyageEventsShowing, Converter={StaticResource MwBoolToVisibilityConverterReverse}}" />
</StackPanel>
</Button>
<Border Grid.Row="0" Grid.Column="8">
<Border.Style>
<Style TargetType="Border">
<Style.Triggers>
<DataTrigger Binding="{Binding IsDuplicateView, Mode=TwoWay}" Value="true">
<Setter Property="Background" Value="LightGreen" />
</DataTrigger>
</Style.Triggers>
</Style>
</Border.Style>
<Button AutomationProperties.AutomationId="DuplicateCheckButton"
Padding="0"
Command="{Binding DuplicateVoyagesCommand}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Switch to duplicate Voyages (ALT + D)"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Duplicate}" />
<AccessText Style="{StaticResource MwAccessTextLabelStyle}" Text="{Binding VoyageDuplicateText}" />
</StackPanel>
</Button>
</Border>
<Button AutomationProperties.AutomationId="PublishVoyagesButton"
Grid.Row="0"
Grid.Column="9"
Padding="0"
Command="{Binding PublishVoyagesCommand}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Publish any modified Voyages (ALT + P)"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Publish}" />
<AccessText Style="{StaticResource MwAccessTextLabelStyle}" Text="{Binding VoyagePublishText}" />
</StackPanel>
</Button>
<Button AutomationProperties.AutomationId="UndoSingleVoyageButton"
Grid.Row="0"
Grid.Column="10"
Padding="0"
Command="{Binding UndoSingleChangedVoyagesCommand}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Locally Undo unpublished changes to the selected voyage"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Undo}" />
<TextBlock Style="{StaticResource MwTextBlockLabelStyle}" Text="Undo Selected" />
</StackPanel>
</Button>
<Button AutomationProperties.AutomationId="UndoandUnpublishVoyageButton"
Grid.Row="0"
Grid.Column="11"
Padding="0"
Command="{Binding UndoChangedVoyagesCommand}"
Focusable="False"
Style="{StaticResource MwButtonStyle}"
ToolTip="Locally Undo any changed and unpublished voyages"
Visibility="{Binding Data.ViewDefinition.IsInternalView, Converter={StaticResource MwBoolToVisibilityConverterReverse}}">
<StackPanel Orientation="Horizontal">
<ContentControl Height="26" Content="{StaticResource Undo}" />
<TextBlock Style="{StaticResource MwTextBlockLabelStyle}" Text="Undo All" />
</StackPanel>
</Button>
</Grid>
</Grid>
</DataTemplate>
</dx:DXTabControl.ItemTemplate>
</dx:DXTabControl>
FlaUITabControlAutomationID private Tab ViewsTabControl => _uiAutomation.FindElement("ViewsParentTabControl", Automation.FindBy.Id).AsTab();
private TabItem ViewsTabItem => _uiAutomation.FindElement("DXTabItem", Automation.FindBy.Id).AsTabItem();
选项卡项TabItem SelectedTab= ViewsTabControl.SelectedTabItem as TabItem; // Gives me Null here
var newTab = ViewsTabControl.SelectedTabItemIndex ; // Give me -1 here
它不是TabItem，而是DXTabItem。这是您应该强制转换到的类型
DXTabItem SelectedTab = ViewsTabControl.SelectedTabItem as DXTabItem;
DevEXpressItemHeaderTemplate自动化对等点。有必要使用自定义自动化对等机
来提供此功能。例如，我使用以下类进行测试：
public class DXTabItemAutomationPeerEx : DXTabItemAutomationPeer, ISelectionItemProvider {
private DXTabItem TabItem => base.Owner as DXTabItem;
private DXTabControl TabControl => TabItem.With((DXTabItem x) => x.Owner);
public DXTabItemAutomationPeerEx(DXTabItem ownerCore) : base(ownerCore) { }
protected override List<AutomationPeer> GetChildrenCore() {
List<AutomationPeer> children = base.GetChildrenCore();
foreach (var button in LayoutTreeHelper.GetVisualChildren(Owner).OfType<Button>())
children.Add(new ButtonAutomationPeer(button));
return children;
}
bool ISelectionItemProvider.IsSelected { get {
if (TabControl != null) {
return TabControl.SelectedContainer == TabItem;
}
return false;
}
}
}
在这篇文章中，这些句子很有魅力
TabItem CurrentTab = ViewsTabControl.SelectedTabItem as TabItem;
var Children = ViewsTabControl.FindAllChildren();
foreach (var child in Children) {
var subChildren = child.FindAllChildren();
}
您正在尝试使用as强制转换，因为DXTab不是TabItem，所以as不会引发异常，而是返回null。这是正确的，因为ViewsTabControl.SelectedTabItem是DXTabItem类型。但这是如何工作的？私有选项卡ViewsTabControl=>\u uiAutomation.FindElement（“ViewsParentTabControl”，Automation.FindBy.Id）.AsTab（）；//这是一个FlaUI选项卡控件ViewTabControl引用FlaUI.Core.AutomationElements。当我将TabItem引用到DXTabItem时，它会给我类型转换错误。它们似乎是两个不同的选项卡控件，还是我错了？DXTabControl可以承载TabItem和DXTabItem。在任何情况下，您都应该通过设置断点来检查您正在做什么。通过这种方式，您可以确切地看到将哪种类型的tabPage添加到tab控件。只有1个tab控件是DxTabControl。如果查看XAML，则TabItems是使用ItemsHeaderTemplate生成的。它们是唯一的项目。我的整个应用程序都在使用DevExpress网格，但这是我第一次面对这个问题。我总是使用FlaUI框架，并且没有添加任何用于查找控件的DevExpress API
static MainWindow() {
NavigationAutomationPeersCreator.Default.RegisterObject(typeof(DXTabItem), typeof(DXTabItemAutomationPeerEx), owner => new DXTabItemAutomationPeerEx((DXTabItem)owner));
}
TabItem CurrentTab = ViewsTabControl.SelectedTabItem as TabItem;
var Children = ViewsTabControl.FindAllChildren();
foreach (var child in Children) {
var subChildren = child.FindAllChildren();
}