<Grid Grid.Row="5" Grid.Column="1">
<ComboBox Cursor="Hand" SelectedItem="{Binding SelectedRealEstate}" Background="White"
Name="cbbRealEstates" ItemsSource="{Binding RealEstateSummary}"/>
</Grid>
the code above gives me invisible item background
How do I make the background visible?
According to this,
You will have to set the styles in the resources of the element. In my case it's a window. So it's
<Window.Resources>
<Style x:Key="ComboBoxItemStyle" TargetType="ComboBoxItem">
<Setter Property="Background" Value="Blue" />
</Style>
<Style x:Key="ComboBoxStyle" TargetType="ComboBox">
<Setter Property="ItemContainerStyle" Value="{StaticResource ComboBoxItemStyle}" />
</Style>
</Window.Resources>
Set a style for ComboBoxItem. And use that style when you set the style for the ComboBox
Then apply the Combobox Style to the element.
<ComboBox Name="myCmb" Style="{StaticResource ComboBoxStyle}">
Related
I have a ListBox in which each item is a StackPanel. The StackPanel consist of an Image and a TextBlock below it:
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="10">
<Image>
<Image.Source>
<BitmapImage UriSource="{Binding Path=ImageFilePath}"/>
</Image.Source>
</Image>
<TextBlock Text="Title" TextAlignment="Center"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
It looks like this:
When the user select an item, I get the default blue rectangle that surround the StackPanel:
Now, I want to make a different border for the selected-item, but I want it to surround only the image.
I know how to make a control template and put a custom border around the ContentPresenter, but this, of course, will surround the whole StackPanel, not only the Image.
I don’t know if making changes to the ContentPresenter is possible, and if it is a good idea at all. If there is other way to achieve the look I want, it will be fine as well.
Right, the ListBox's own ContentPresenter isn't helpful for what you're doing. You want to a) eliminate the ListBox's own selection visuals and b) replace them with something more suitable in the DataTemplate for your items.
The default selection visual is applied by the default template for ListBoxItem. So replace that template. Using a Style in the resources for your ListBox, apply your own control template to ListBoxItem. Not much to it, just present the content and don't provide a selection background. Then you handle the selection visuals with a trigger in your data template, where your image and your label are defined and you can apply changes to one and not the other. The below example works for me.
Note that there's some fiddling with the HorizontalAlignment on the Border element to make it cling to the Image element within it. Also, I wrote a quickie test viewmodel whose Items property is called Items; I assume this is not the name of the collection member you're using to populate your own ListBox.
<ListBox
Margin="8"
ItemsSource="{Binding Items}"
>
<ListBox.Resources>
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Grid>
<ContentPresenter />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.Resources>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Border
x:Name="HighlightBorder"
BorderThickness="4"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Margin="10"
>
<Border.Style>
<Style TargetType="Border">
<!-- MUST set default BorderBrush via a style, if you set it at all.
As an attribute on the Border tag, it would override the effects of
the trigger below.
-->
<Setter Property="BorderBrush" Value="Transparent" />
</Style>
</Border.Style>
<Image Source="{Binding ImageFilePath}" />
</Border>
</Grid>
<DataTemplate.Triggers>
<DataTrigger
Binding="{Binding IsSelected, RelativeSource={RelativeSource AncestorType=ListBoxItem}}"
Value="True">
<Setter TargetName="HighlightBorder" Property="BorderBrush" Value="Orange" />
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I'm using the AutoCompleteBox control from the WPF Toolkit.
How do I set different background and foreground on item dropdown than on the textbox?
The XAML below applies a different style to the item textblock in the dropdown, but leaves the background behind the dropdown items with the background colour of the autocomplete textbox. Basically I want the autocomplete textbox to have a dark background and the dropdown to have a white background.
<Style x:Key="SearchBox2" TargetType="wpftoolkit:AutoCompleteBox" >
<Setter Property="Background" Value="#3B4044"></Setter>
<Setter Property="Foreground" Value="#FFFFFF"></Setter>
<Setter Property="BorderBrush" Value="#000000"></Setter>
<Setter Property="BorderThickness" Value="1"></Setter>
<Setter Property="Height" Value="25"></Setter>
</Style>
<wpftoolkit:AutoCompleteBox
x:Name="SearchBox"
Grid.Column="0" Grid.Row="0"
ValueMemberPath="SearchDesc"
FilterMode="Contains"
IsTextCompletionEnabled="True"
Text="Search for an app..."
Style="{StaticResource SearchBox2}" >
<wpftoolkit:AutoCompleteBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding LongDesc}" Foreground="#16509A" Background="White" />
</StackPanel>
</DataTemplate>
</wpftoolkit:AutoCompleteBox.ItemTemplate>
</wpftoolkit:AutoCompleteBox>
Instead of using ItemTemplate, make use of ItemContainerStyle. Please find the code fix below and let me know whether or not this works for you.
Please try this code:
<wpftoolkit:AutoCompleteBox
x:Name="SearchBox"
Grid.Column="0" Grid.Row="0"
FilterMode="Contains"
IsTextCompletionEnabled="True"
Text="Search for an app...">
<wpftoolkit:AutoCompleteBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="Background" Value="White"/>
<Setter Property="Foreground" Value="#16509A"/>
</Style>
</wpftoolkit:AutoCompleteBox.ItemContainerStyle>
</wpftoolkit:AutoCompleteBox>
I'm try to set the Foreground colour on a Hyperlink using a Style object in an ancestor's Resources, but it's not having any effect. I even used the BasedOn tip from Changing Hyperlink foreground without losing hover color, but it's not made any difference - I still get a blue hyperlink that is red on hover.
Here's the XAML for my controls, including an ItemsControl whose items are shown using a hyperlink:
<StackPanel Background="Red" TextElement.Foreground="White">
<StackPanel.Resources>
<Style TargetType="Hyperlink" BasedOn="{StaticResource {x:Type Hyperlink}}">
<Setter Property="Foreground" Value="Yellow"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="White"/>
</Trigger>
</Style.Triggers>
</Style>
</StackPanel.Resources>
<TextBlock>Data import errors</TextBlock>
<ItemsControl ItemsSource="{Binding Errors}"/>
</StackPanel>
And the items in the ItemsControl are picking up the following DataTemplate:
<DataTemplate DataType="{x:Type Importer:ConversionDetailsMessage}">
<TextBlock>
<Run Text="{Binding Message, Mode=OneTime}"/>
<Hyperlink Command="Common:ImportDataCommands.ExplainConversionMessage" CommandParameter="{Binding}">
<Run Text="{Binding HelpLink.Item2, Mode=OneTime}"/>
</Hyperlink>
</TextBlock>
</DataTemplate>
It's worth noting, too, that I don't want to just set the different colours directly on the Hyperlink in the DataTemplate. This is because the template will be used by a number of different ItemsControl objects, most of which will be on a white background and so can use the standard hyperlink colours. (Note that the one in the XAML above, however, has a red background.)
In short, I don't want the DataTemplate to have to know anything about the control in which it's being used. The styles for the template's controls should just filter down to it.
So... can anyone tell me why the style's not filtering down and what I can do to fix it?
Thanks.
Update:
Since I couldn't get Pavlo's answer to work in my production app, I've since tried it in a separate test app. The app is a WinForms app, with the main form containing nothing but an ElementHost, which itself contains a simple WPF usercontrol. Here's its XAML:
<UserControl x:Class="DataTemplateStyling.StylingView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:DataTemplateStyling="clr-namespace:DataTemplateStyling"
x:Name="root" Loaded="StylingViewLoaded">
<UserControl.Resources>
<Style x:Key="MyDefaultHyperlinkStyle" BasedOn="{StaticResource {x:Type Hyperlink}}"/>
<DataTemplate DataType="{x:Type DataTemplateStyling:ImportMessage}">
<DataTemplate.Resources>
<Style TargetType="{x:Type Hyperlink}"
BasedOn="{StaticResource MyDefaultHyperlinkStyle}"/>
</DataTemplate.Resources>
<TextBlock>
<Run Text="{Binding Message, Mode=OneTime}"/>
<Hyperlink NavigateUri="{Binding HelpLink.Item1}">
<Run Text="{Binding HelpLink.Item2, Mode=OneTime}"/>
</Hyperlink>
</TextBlock>
</DataTemplate>
</UserControl.Resources>
<Grid DataContext="{Binding ElementName=root}">
<StackPanel Background="Red" TextElement.Foreground="White">
<StackPanel.Resources>
<Style x:Key="MyDefaultHyperlinkStyle" TargetType="Hyperlink" BasedOn="{StaticResource {x:Type Hyperlink}}">
<Setter Property="Foreground" Value="Yellow"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="White"/>
</Trigger>
</Style.Triggers>
</Style>
</StackPanel.Resources>
<TextBlock>Data import errors</TextBlock>
<ItemsControl ItemsSource="{Binding Messages}"/>
</StackPanel>
</Grid>
</UserControl>
As it stands above, this generates an InvalidOperationException, stating "Can only base on a Style with target type that is base type 'IFrameworkInputElement'."
That can be fixed by putting TargetType="Hyperlink" on the Style definition immediately inside the UserControl.Resources element. However, while the messages are being shown, the link part of them still has the default blue hyperlink styling:
In short, it's not working, so I'd welcome any other suggestions/corrections. :(
Update 2:
Thanks to an alternative solution from Pavlo, it now is working. :)
After some googling I ran into this post: http://www.11011.net/archives/000692.html.
As it described there, it turns out that elements that are not derived from Control (like TextBlock and Hyperlink) do not look for implicit styles outside the DataTemplate boundary.
Again, as the article says, the possible workaround is to specify the style key explicitly. In your case it might be something like this:
<StackPanel Background="Red" TextElement.Foreground="White">
<StackPanel.Resources>
<Style x:Key="MyDefaultHyperlinkStyle" TargetType="Hyperlink" BasedOn="{StaticResource {x:Type Hyperlink}}">
<Setter Property="Foreground" Value="Yellow"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="White"/>
</Trigger>
</Style.Triggers>
</Style>
</StackPanel.Resources>
<TextBlock>Data import errors</TextBlock>
<ItemsControl ItemsSource="{Binding Errors}"/>
</StackPanel>
Then, you can add an implicit style for Hyperlink that just references our named style in the DataTemplate resources:
<DataTemplate DataType="{x:Type Importer:ConversionDetailsMessage}">
<DataTemplate.Resources>
<Style TargetType="{x:Type Hyperlink}"
BasedOn="{StaticResource MyDefaultHyperlinkStyle}"/>
</DataTemplate.Resources>
<TextBlock>
<Run Text="{Binding Message, Mode=OneTime}"/>
<Hyperlink Command="Common:ImportDataCommands.ExplainConversionMessage" CommandParameter="{Binding}">
<Run Text="{Binding HelpLink.Item2, Mode=OneTime}"/>
</Hyperlink>
</TextBlock>
</DataTemplate>
And because the data template can be used in different places, there is a possibility that parent container doesn't define a style with key "MyDefaultHyperlinkStyle". In this case an exception will be thrown saying that resource "MyDefaultHyperlinkStyle" cannot be found. To address this, you can define a style with such key that will only inherit default style somewhere in App.xaml:
<Style x:Key="MyDefaultHyperlinkStyle"
BasedOn="{StaticResource {x:Type Hyperlink}}/>
Update:
The code you included in your update will not work because of the nature of static resources, which means that the following resource reference in date template...
BasedOn="{StaticResource MyDefaultHyperlinkStyle}"
... will always point to the following resource (which is the default style):
<Style x:Key="MyDefaultHyperlinkStyle" BasedOn="{StaticResource {x:Type Hyperlink}}"/>
Static resource references are resolved at compile time, therefore the closest resource in the tree is used.
You might be tempted to use DynamicResource, but unfortunately it is not supported with the BasedOn property.
BUT, Foreground property supports dynamic resources, so we can use the same trick with brushes we use inside our style. Here is your test user control modified to use dynamic brushes:
<UserControl x:Class="DataTemplateStyling.StylingView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:DataTemplateStyling="clr-namespace:DataTemplateStyling"
x:Name="root"
Loaded="StylingViewLoaded">
<UserControl.Resources>
<SolidColorBrush x:Key="HyperlinkForeground"
Color="Blue" />
<SolidColorBrush x:Key="HyperlinkHoverForeground"
Color="Gray" />
<Style x:Key="MyDefaultHyperlinkStyle"
TargetType="Hyperlink"
BasedOn="{StaticResource {x:Type Hyperlink}}">
<Setter Property="Foreground"
Value="{DynamicResource HyperlinkForeground}" />
<Style.Triggers>
<Trigger Property="IsMouseOver"
Value="True">
<Setter Property="Foreground"
Value="{DynamicResource HyperlinkHoverForeground}" />
</Trigger>
</Style.Triggers>
</Style>
<DataTemplate DataType="{x:Type DataTemplateStyling:ImportMessage}">
<DataTemplate.Resources>
<Style TargetType="{x:Type Hyperlink}"
BasedOn="{StaticResource MyDefaultHyperlinkStyle}" />
</DataTemplate.Resources>
<TextBlock>
<Run Text="{Binding Message, Mode=OneTime}" />
<Hyperlink NavigateUri="{Binding HelpLink.Item1}">
<Run Text="{Binding HelpLink.Item2, Mode=OneTime}" />
</Hyperlink>
</TextBlock>
</DataTemplate>
</UserControl.Resources>
<Grid DataContext="{Binding ElementName=root}">
<StackPanel Background="Red"
TextElement.Foreground="White">
<StackPanel.Resources>
<SolidColorBrush x:Key="HyperlinkForeground"
Color="Yellow" />
<SolidColorBrush x:Key="HyperlinkHoverForeground"
Color="White" />
</StackPanel.Resources>
<TextBlock>Data import errors</TextBlock>
<ItemsControl ItemsSource="{Binding Messages}" />
</StackPanel>
</Grid>
</UserControl>
It works as expected, i.e. all links inside StackPanel will be Yellow/White, while outside they will be blue.
Hope this helps.
So in the Xceed documentation there is a code example that does not work for me. It may be because my grid is bound to a DataGridCollectionView. The objects in the collection used by the datagridcollection are what implement IDataErrorInfo.
The errors are showing up just fine. The problem is that they are using the default orange background for errors...I need a red border. Below is the XAML instantiation of my grid. I set the DataCell background property to red just so I could be sure I had access to the grid's properties... I do. I just can't find the way to identify the cell's w/ errors so I can style them. Thanks!
<XceedDG:DataGridControl Grid.Row="1" Grid.ColumnSpan="5" ItemsSource="{Binding Path = ABGDataGridCollectionView, UpdateSourceTrigger=PropertyChanged}"
Background="{x:Static Views:DataGridControlBackgroundBrushes.ElementalBlue}" IsDeleteCommandEnabled="True"
FontSize="16" AutoCreateColumns="False" x:Name="EncounterDataGrid" AllowDrop="True">
<XceedDG:DataGridControl.View>
<Views:TableView ColumnStretchMode="All" ShowRowSelectorPane="True"
ColumnStretchMinWidth="100">
<Views:TableView.FixedHeaders>
<DataTemplate>
<XceedDG:InsertionRow Height="40"/>
</DataTemplate>
</Views:TableView.FixedHeaders>
</Views:TableView>
</XceedDG:DataGridControl.View>
<!--Group Header formatting-->
<XceedDG:DataGridControl.Resources>
<Style TargetType="{x:Type XceedDG:GroupByControl}">
<Setter Property="Visibility" Value="Collapsed"/>
</Style>
<Style TargetType="{x:Type XceedDG:DataCell}">
<Setter Property="Background" Value="Red"/>
</Style>
</XceedDG:DataGridControl.Resources>
...
The knowledge base entry:
http://xceed.com/KB/questions.php?questionid=256
Does seem to be potentially missing a critical piece.
Did you try the CellErrorStyle Property on DataGridView?
<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
<Grid.Resources>
<Style x:Key="errorStyle" TargetType="{x:Type xcdg:DataCell}">
<Setter Property="Foreground" Value="Red"/>
</Style>
</Grid.Resources>
<xcdg:DataGridControl CellErrorStyle="{StaticResource errorStyle}" >
<!--STUFF OMITTED-->
</xcdg:DataGridControl>
</xcdg:DataGridControl>
I have a ListBox that displays a number of usercontrols that are bound to my questions. This is working fine, however I don't want each of the items in the ListBox to be selectable, as such I created a blank style and applied it to the ItemContainerStyle. This has resulted in my content to disappear and each item is showing blank. Any ideas?
--Xaml--
<ListBox ItemContainerStyle="{StaticResource noSelect}" Name="lbTasks" Height="180"
BorderBrush="#E6E6E6" >
<ListBox.ItemTemplate>
<DataTemplate>
<my:TaskQuestion Question="{Binding Test}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
--Style--
<Style x:Key="noSelect" TargetType="{x:Type ListBoxItem}">
<Setter Property="Margin" Value="2, 2, 2, 0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<ContentPresenter />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Am i using the content presenter incorrectly?
Tia, Kohan
Set TargetType for your ControlTemplate in the Style
e. g. <ControlTemplate TargetType="{x:Type ListBoxItem}">