I have the following Data template with triggers:
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding IsCalled}" Value="Yes">
<Setter TargetName="labelNumber" Property="Background" Value="Green" />
<Setter TargetName="labelNumber" Property="BorderThickness" Value="5" />
<Setter TargetName="labelNumber" Property="BorderBrush" Value="Blue" />
</DataTrigger>
<DataTrigger Binding="{Binding IsCalled}" Value="JustCalled" >
<Setter TargetName="labelNumber" Property="Background" Value="Pink" />
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
Rather than individually set the label properties I want to call a style like the below:
How would get the Data Template to use the style above.
thank you
You can use a setter like
<Setter TargetName="labelNumber" Property="Style" Value="{StaticResource myLabelStyle1}" />
but you'll need to make sure you're not setting any properties locally on the labelNumber Label because they'll override any Style settings. You'll need another Style for your Label to set any properties for its default state in addition to the ones in the Triggers.
<Label Style="{StaticResource myDefaultLabelStateStyle}"/>
Related
I have a status bar that, via data binding and triggers, shows whether a user is connected to a server. I'm styling two different elements to achieve this: the actual StatusBarItem to set a colored background (red, green, yellow), and a TextBlock inside to display the text ("Not Connected", "Connected" etc.) As I'm doing this in XAML, I have to duplicate the DataTrigger logic across two styles (to update the background in one and text in another), like so:
<StatusBarItem Grid.Column="0" HorizontalAlignment="Left" Padding="10,0,10,0">
<StatusBarItem.Style>
<Style TargetType="StatusBarItem">
<Setter Property="Background" Value="Red" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.NotConnected}">
<Setter Property="Background" Value="Red" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.Connected}">
<Setter Property="Background" Value="Green" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.OfflineMode}">
<Setter Property="Background" Value="Goldenrod" />
</DataTrigger>
</Style.Triggers>
</Style>
</StatusBarItem.Style>
<TextBlock Width="Auto" Height="Auto">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Setter Property="Text" Value="Not Connected" />
<Setter Property="Foreground" Value="White" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.NotConnected}">
<Setter Property="Text" Value="Not Connected" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.Connected}">
<Setter Property="Text" Value="Connected to Perforce" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.OfflineMode}">
<Setter Property="Text" Value="Offline Mode" />
</DataTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
</StatusBarItem>
Question: is there a way to compress this code and not duplicate the DataTrigger logic?
Please note that I'm not interested in solutions that make the TextBlock fill out the entire StatusBarItem. Sure, that would solve this particular issue (I'd just style the TextBlock for both background color and text). But it doesn't address the issue at large (duplicate code that has to be updated in two places).
In this particular case you could set the Content property using the DataTriggers in the StatusBarItem style instead of using an explicit TextBlock as the Content:
<StatusBarItem Grid.Column="0" HorizontalAlignment="Left" Padding="10,0,10,0">
<StatusBarItem.Style>
<Style TargetType="StatusBarItem">
<Setter Property="Background" Value="Red" />
<Setter Property="Content" Value="Not Connected" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.NotConnected}">
<Setter Property="Background" Value="Red" />
<Setter Property="Content" Value="Not Connected" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.Connected}">
<Setter Property="Background" Value="Green" />
<Setter Property="Content" Value="Connected to Perforce" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=ConnectionStatus}" Value="{x:Static local:EConnectionStatus.OfflineMode}">
<Setter Property="Background" Value="Goldenrod" />
<Setter Property="Content" Value="Offline mode" />
</DataTrigger>
</Style.Triggers>
</Style>
</StatusBarItem.Style>
</StatusBarItem>
Another option would be to define your own custom ControlTemplate for the StatusBarItem and use ControlTemplate.Triggers to change the background and the text in one place.
I have run into a few issues with gridcontrol.
I have to style and format a grid column with padding,colors,fonts and hover effects.
<Style x:Key="SelectedRowStyle" TargetType="{x:Type dxg:RowControl}">
<Setter Property="Foreground" Value="Black" />
<Setter Property="FontFamily" Value="pack://application:,,,/PA.Tos.UI;component/ResourceDictionaries/#Brandon Grotesque Black" />
<Setter Property="FontSize" Value="12" />
<Setter Property="FontWeight" Value="Regular" />
<Style.Triggers>
<DataTrigger Binding="{Binding
ElementName=GroupCodeListView,Path=DataContext.SelectedGroupCode.Deleted,
UpdateSourceTrigger=PropertyChanged}" Value="true">
<Setter Property="Background" Value="Red" />
<Setter Property="Foreground" Value="Black" />
</DataTrigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{StaticResource HoverRowBorderColor}" />
<Setter Property="Foreground" Value="Black" />
</Trigger>
<Trigger Property="dxg:GridViewBase.IsFocusedRow" Value="True">
<Setter Property="Background" Value="{StaticResource HoverRowBorderColor}" />
<Setter Property="BorderBrush" Value="{StaticResource HoverStrokeColor}" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="Foreground" Value="Black" />
</Trigger>
</Style.Triggers>
</Style>
<Style x:Key="CustomCellStyle" BasedOn="{StaticResource {dxgt:GridRowThemeKey
ResourceKey=LightweightCellStyle}}" TargetType="{x:Type dxg:LightweightCellEditor}">
<Setter Property="MaxHeight" Value="25"/>
<Setter Property="MinHeight" Value="25"/>
<Style.Triggers>
</Style.Triggers>
In response to a mouse hover or row selection, i have to set the border blue across all grid lines. Only the bottom grid line is blue as of
now from the above. Code applicable to cellcontent presenter won't be possible here.
In response to a trash icon clicked, i have to display light red background for the particular row.
I bind (viewmodel property)SelectedGroupCode.Deleted=true to the background.The binding is shown in the code.
but all rows are painted red except the row in question.
The grid lines width has to be set. i have managed to set it for the horizontal lines only using gridrowthemekey_rowcontrolcontainertemplate.
I assure you i have read through some previous threads but its taking too much time for a scrum sprint.
What is missing?
If you want to change the cell style in response to a mouse hover then you can use RelativeSource markup extension in DataTrigger's binding. If you want to check whether the row is focused, then you can use RowData.IsFocused property.
Here is example:
<Style x:Key="CustomCellStyle" TargetType="{x:Type dxg:LightweightCellEditor}" BasedOn="{StaticResource {dxgt:GridRowThemeKey ResourceKey=LightweightCellStyle}}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type dxg:RowControl}}}" Value="True">
<Setter Property="BorderBrush" Value="Blue" />
</DataTrigger>
<DataTrigger Binding="{Binding RowData.IsFocused}" Value="true">
<Setter Property="BorderBrush" Value="Blue" />
</DataTrigger>
</Style.Triggers>
</Style>
For displaying custom style for particular row I suggest you to use Conditional Formatting.
Here is example:
<dxg:GridControl ...>
...
<dxg:GridControl.View>
<dxg:TableView>
<dxg:TableView.FormatConditions>
<dxg:FormatCondition Expression="[Deleted]" FieldName="Profit">
<dxc:Format Foreground="Red"/>
</dxg:FormatCondition>
</dxg:TableView.FormatConditions>
</dxg:TableView>
</dxg:GridControl.View>
</dxg:GridControl>
I have the following DataTrigger in a WPF form:
<CheckBox IsChecked="{Binding ConcentratorViewModel.Integrated}">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Margin" Value="0,10,0,0"/>
<Setter Property="Width" Value="20"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<!--<Setter Property="IsEnabled" Value="False"/>-->
<!--<Setter Property="IsChecked" Value="False"/>-->
<Style.Triggers>
<DataTrigger Binding="{Binding ConcentratorViewModel.Manufacturer}" Value="ZIV">
<Setter Property="Background" Value="Red"/>
<Setter Property="IsChecked" Value="True"/>
</DataTrigger>
<DataTrigger Binding="{Binding ConcentratorViewModel.Manufacturer}" Value="Landis+Gyr">
<Setter Property="IsChecked" Value="False"/>
</DataTrigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
The CheckBox must be Checked or Unchecked depending on the selected manufacturer. I added a converter to see the value on the trigger and it's correct. I've also added the Background property and it changes correctly, but the IsChecked doesn't work.
Well you need to move the IsChecked Binding inside the Style. Setting it directly on the Checkbox gives it precedence and the Trigger's cannot change that value.
So something like:
<CheckBox>
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Margin"
Value="0,10,0,0" />
<Setter Property="Width"
Value="20" />
<Setter Property="VerticalAlignment"
Value="Center" />
<Setter Property="IsChecked"
Value="{Binding ConcentratorViewModel.Integrated}" />
<Style.Triggers>
<DataTrigger Binding="{Binding ConcentratorViewModel.Manufacturer}"
Value="ZIV">
<Setter Property="Background"
Value="Red" />
<Setter Property="IsChecked"
Value="True" />
</DataTrigger>
<DataTrigger Binding="{Binding ConcentratorViewModel.Manufacturer}"
Value="Landis+Gyr">
<Setter Property="IsChecked"
Value="False" />
</DataTrigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
Note:
Remember by doing this, your Binding only applies when the DataTrigger's do not evaluate to "True". Thus if your Manufacturer property is "ZIV" or "Landis+Gyr" then your Integrated property is not going to see any CheckBox updates even with a TwoWay binding as it just isn't being used.
In WPF is there some mechanisim to reuse the property setters amoung differant triggers? For example I have the following.
<Style TargetType="{x:Type Label}">
<Style.Triggers>
<DataTrigger Binding="{Binding}" Value="{x:Null}">
<Setter Property="Content" Value="Not Connected" />
<Setter Property="Foreground" Value="Red" />
</DataTrigger>
<DataTrigger Binding="{Binding IsConnected}" Value="False">
<Setter Property="Content" Value="Not Connected" />
<Setter Property="Foreground" Value="Red" />
</DataTrigger>
<DataTrigger Binding="{Binding IsConnected}" Value="True">
<Setter Property="Content" Value="Connected" />
<Setter Property="Foreground" Value="Green" />
</DataTrigger>
</Style.Triggers>
</Style>
The setters for Null and False are identical and it would be nice if there was only a single point of change.
You can always create a resource like this:
<Setter x:Key="setter1" Property="Content" Value="Not Connected" />
However, you cannot use resource keys as object in a collection.
You could set somewhere
<SomeObject Setter="{StaticResource setter1}"/>
but Setters are almost always added to collections and you cannot add resource keys in xaml collection syntax.
The only scenario I can think of which would support this would be to create a SetterBaseCollection resource with those two identical pairs of Setters,
<SetterBaseCollection x:Key="settersKey">
<Setter Property="Label.Content" Value="Not Connected" />
<Setter Property="Label.Foreground" Value="Red" />
</SetterBaseCollection>
<Style TargetType="{x:Type Label}">
<Style.Triggers>
<DataTrigger Binding="{Binding}" Value="{x:Null}" Setters="{StaticResource settersKey}"/>
// ...
</Style.Triggers>
</Style>
but the DataTrigger.Setters collection property is readonly and cannot be set from xaml.
So, the answer would be no.
In this special case, it would be best to make the unconnected case the default (without a condition), and only create a DataTrigger for the one case that is different.
hey i wanna change row foreground color according to a boolean in the model, whats the best way of doing it?
Define the style as following (IsBlah is a boolian property):
<Style x:Key="MyRowStyle" TargetType="{x:Type dg:DataGridRow}">
<Setter Property="Background" Value="White"/>
<Setter Property="Foreground" Value="DarkBlue"/>
<Style.Triggers>
<DataTrigger Binding="{Binding IsBlah}" Value="False" >
<Setter Property="Background" Value="DarkGray" />
<Setter Property="Foreground" Value="White" />
</DataTrigger>
</Style.Triggers>
</Style>
Your DataGrid should have a custom RowStyle. (RowStyle="{StaticResource MyRowStyle})
This is basically the same answer as Boris, but here's the syntax if you prefer to define the style directly within the DataGrid definition.
Note: Blend won't give you a live preview of this so you'll have to run it
<DataGrid>
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding HasErrors}" Value="True">
<Setter Property="Foreground" Value="Red"/>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
</DataGrid>