I want a CheckBox text to changed based on the IsChecked status.
Tried with the following, but it complains about not having the property Content
<CheckBox Name="IsManualInput" IsChecked="{Binding Path=IsManual, Mode=TwoWay}" >
<CheckBox.Style>
<Style>
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsChecked}" Value="True" >
<Setter Property="Content" Value="Manual" />
<Setter Property="IsReadOnly" Value="True"/>
</DataTrigger>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsChecked}" Value="True" >
<Setter Property="Content" Value="Define manually..." />
<Setter Property="IsReadOnly" Value="True"/>
</DataTrigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
It's a simple mistake, you need to include TargetType in your Style.
e.g.
<Style TargetType="{x:Type CheckBox}">
Related
I would like to gray out the text associated to an unchecked row in my application using xaml. I tried the following, but it is getting overwritten:
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox Name="cbkSelect"
IsChecked="{Binding Path=IsSelectedForOrder, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Visibility" Value="Hidden"/>
<Style.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Foreground" Value="Gray"/>
</Trigger>
<DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
As the Foreground color should be applied to all cells of a given row, you can remove the trigger. The trigger inside the CellTemplate will only apply to to the CheckBox that the style is applied to.
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox Name="cbkSelect"
IsChecked="{Binding Path=IsSelectedForOrder, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Visibility" Value="Hidden"/>
<Style.Triggers>
<DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
If you want to apply the foreground color in normal state, but not in selected state, add this RowStyle.
<DataGrid.RowStyle>
<Style TargetType="{x:Type DataGridRow}" BasedOn="{StaticResource {x:Type DataGridRow}}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsSelectedForOrder}" Value="True">
<Setter Property="Foreground" Value="Gray"/>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
If you want to apply the style in selected state, too, add this CellStyle. In this case a RelativeSource binding is used to access the data context of the row which contains IsSelectedForOrder.
<DataGrid.CellStyle>
<Style TargetType="{x:Type DataGridCell}" BasedOn="{StaticResource {x:Type DataGridCell}}">
<Style.Triggers>
<DataTrigger Binding="{Binding DataContext.IsSelectedForOrder, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True">
<Setter Property="Foreground" Value="Gray"/>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.CellStyle>
The checkbox is invisible until I mouse over which is what I want, but now I want it to stay visible once it is checked. I've tried implementing a multi trigger, but it doesn't seem to be working:
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox Name="cbkSelect"
IsChecked="{Binding Path=IsSelectedForOrder, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Visibility" Value="Hidden"/>
<Style.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True"></Condition>
<Condition Binding="{Binding IsChecked, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True"></Condition>
</MultiDataTrigger.Conditions>
<MultiDataTrigger.Setters>
<Setter Property="Visibility" Value="Visible"/>
</MultiDataTrigger.Setters>
</MultiDataTrigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
A MultiDataTrigger will only apply the setter when all conditions are met.
Represents a trigger that applies property values or performs actions when the bound data meet a set of conditions.
Apart from that, binding to the DataGridRow does not work, as it has no IsChecked property. Instead, add a Trigger that acts on the IsChecked property of the associated CheckBox.
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Visibility" Value="Hidden"/>
<Style.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Visibility" Value="Visible"/>
</Trigger>
<DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type DataGridRow}}}" Value="True">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
The following triggers work almost as expected:
<Style.Triggers>
<Trigger Value="True" Property="IsSelected">
<Setter Property="Foreground" Value="White" />
</Trigger>
<DataTrigger Value="True" Binding="{Binding UpdateSourceTrigger=PropertyChanged, Converter={StaticResource InUseConverter}}">
<Setter Property="Foreground" Value="OrangeRed" />
</DataTrigger>
</Style.Triggers>
After loading the view, the colors are correct.
Then I execute an async taks en when it has finished I give the propertychanged on the object that has the binding to my datagrid-row.
But why is the DataTrigger not fired (I have to refresh the view to see the effect)?
EDIT:
My problem is that I don't now which property I have to give the PropertyChanged.
Some details about the datagrid (Projects is an ObservableCollection):
DataGrid SelectedItem="{Binding Project}" ItemsSource="{Binding Projects}">
The property of object Project that the binding must use is:
Project.Variants[0].InUse
I tried also the triggers:
<DataTrigger Value="True" Binding="{Binding Path=Variants[0].InUse, Converter={StaticResource NotNullConverter}}">
<DataTrigger Value="True" Binding="{Binding Path=., Converter={StaticResource InUseConverter}}">
In the view model I have tried after Project.Variants[0].InUse = null;:
Project.OnPropertyChanged("InUse");
Project.Variants[0].OnPropertyChanged("InUse");
raisePropertyChanged("Project.Variants[0].InUse");
raisePropertyChanged("Variants[0].InUse");
raisePropertyChanged("Projects");
raisePropertyChanged("Project");
raisePropertyChanged("InUse");
At last it works using:
<DataTrigger Value="True" Binding="{Binding Path=Variants[0].InUse, Converter={StaticResource NotNullConverter}}">
<Setter Property="Foreground" Value="OrangeRed" />
</DataTrigger>
Project.Variants[0].OnPropertyChanged("InUse");
Try to set Foreground property in your style to change it dynamically at runtime
<Setter Property="Foreground" Value="White"/>
<Style.Triggers>
<Trigger Value="True" Property="IsSelected">
<Setter Property="Foreground" Value="White" />
</Trigger>
<DataTrigger Value="True" Binding="{Binding UpdateSourceTrigger=PropertyChanged, Converter={StaticResource InUseConverter}}">
<Setter Property="Foreground" Value="OrangeRed" />
</DataTrigger>
</Style.Triggers>
I have a two radioButtons and two textboxs
<RadioButton x:Name="AdmLnkRadio1" GroupName="AdmLnkgr1" Content="Link #1"/>
<RadioButton x:Name="AdmLnkRadio2" GroupName="AdmLnkgr1" Content="Link #2"/>
<TextBox x:Name="AdmLnkTextBoxName1" />
<TextBox x:Name="AdmLnkTextBoxName2" IsEnabled="False" >
<TextBox.Style>
<Style BasedOn="{StaticResource TextBoxBase}" TargetType="TextBox" >
<Style.Triggers>
<!--Trigger 1 -->
<DataTrigger Binding="{Binding ElementName=AdmLnkRadio1, Path=IsChecked}" Value="True">
<Setter Property="Text" Value="{Binding ElementName=AdmLnkTextBoxName1, Path=Text}"></Setter>
<Setter Property="IsEnabled" Value="False"></Setter>
</DataTrigger>
<!--Trigger 2 - Doesn't Fires UP!!!! -->
<DataTrigger Binding="{Binding ElementName=AdmLnkRadio2, Path=IsChecked}" Value="True">
<Setter Property="Text" Value=""></Setter>
<Setter Property="IsEnabled" Value="True"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</TextBox.Style>
</TextBox>
When user checks radiobutton 1 the trigger 1 works and second textbox text binds to the text of the first one. But when the second radiobutton is checked, the second trigger should fire up, but it doesn't. Thanks for any help
It does fire but because you're setting IsEnabled to fixed False value your style does not override it (Dependency Property Setting Precedence List). Try setting IsEnabled in your Style, like this
<TextBox x:Name="AdmLnkTextBoxName1" />
<TextBox x:Name="AdmLnkTextBoxName2">
<TextBox.Style>
<Style TargetType="TextBox" >
<Setter Property="IsEnabled" Value="False"/>
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=AdmLnkRadio1, Path=IsChecked}" Value="True">
<Setter Property="Text" Value="{Binding ElementName=AdmLnkTextBoxName1, Path=Text}"/>
<Setter Property="IsEnabled" Value="False"/>
</DataTrigger>
<DataTrigger Binding="{Binding ElementName=AdmLnkRadio2, Path=IsChecked}" Value="True">
<Setter Property="Text" Value=""/>
<Setter Property="IsEnabled" Value="True"/>
</DataTrigger>
</Style.Triggers>
</Style>
</TextBox.Style>
</TextBox>
I generate ListBox menu from XML. I use datatemplate to style the behavior of listboxitems on selection and other states. I need to hide all textblocks in all listboxitems on selection of the item which gets a value ‘retract’ from XML. Now, I am able to hide texblock only in listboxitem which has this value but cannot hide textblocks in other listboxitems. I am wondering if someone can help. Thank you in advance.
<DataTemplate x:Key="ListBoxItemDataTemplate">
<Grid x:Name="DataItem">
<Image x:Name="IconImage" Source="{Binding XPath=#icon}" Height="16" Margin="16,0,0,0" Stretch="None" VerticalAlignment="Center" HorizontalAlignment="Left" />
<TextBlock x:Name="ListboxIemtextBlock" Text="{Binding XPath=#name}" />
<Image x:Name="ArrowImage" Height="10" Source="Resources/Images/arrow_collapsed_grey.png" Visibility="{Binding XPath=#state}"/>
</Grid>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}, Mode=FindAncestor}}" Value="True">
<Setter TargetName="ListboxIemtextBlock" Property="Foreground" Value="White"/>
<Setter TargetName="IconImage" Property="Source" Value="{Binding XPath=#iconSelected}"/>
<Setter TargetName="IconImage" Property="Height" Value="16"/>
<Setter TargetName="ArrowImage" Property="Source" Value="Resources/Images/arrow_collapsed_white.png"/>
</DataTrigger>
<DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}, Mode=FindAncestor}}" Value="True">
<Setter TargetName="ListboxIemtextBlock" Property="Foreground" Value="#FF6dacbe"/>
</DataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}, Mode=FindAncestor}}" Value="True" />
<Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}, Mode=FindAncestor}}" Value="True" />
</MultiDataTrigger.Conditions>
<Setter TargetName="ListboxIemtextBlock" Property="Foreground" Value="White"/>
</MultiDataTrigger>
<DataTrigger Binding="{Binding XPath=#retract}" Value="True" >
<Setter TargetName="ListboxIemtextBlock" Property="Visibility" Value="Hidden"/>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
It looks like I cannot control the visibility of all texblocks from a datatemplate. I think it should be done in the ListBox style. I was thinking to switch datatemplates with a second datatemplate that does not have texblock at all. I wanted to use multitrigger for conditions with values isSelected and XML-Binding to Binding="{XPath=#retract}. However, I cannot assign XPath binding for multitrigger in Listbox style. Perphaps, you might help to bind it correctly or have a better idea on how to hide texblocks.
<Style x:Key="ListBoxItemContainerStyle" TargetType="{x:Type ListBoxItem}">
<Setter Property="ContentTemplate" Value="{StaticResource ListBoxItemDataTemplate}"/>
<Setter Property="Template" >
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<ContentPresenter x:Name="contentPresenter"/>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="true"/>
<Condition Binding="{XPath=#retract}" Value="true"/>
</MultiTrigger.Conditions>
<Setter Property="ContentTemplate" Value="{StaticResource SelectedListBoxItemDataTemplate}"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I populated XML with XMLDataProvider. I reference to xml this way:
<XmlDataProvider x:Key="PagesData" XPath="/Pages" Source="Data/DataSource.xml" />
XML:
<Pages xmlns="">
<page name="Item 1" icon="Resources/Iocn1.png" retract="False" />
<page name="Item 2" icon="Resources/Iocn2.png" retract="False" />
<page name="Item 3" icon="Resources/Iocn3.png" retract="True" /></Pages>
You can bind to the SelectedItem.retract for the Parent ListBox. This is a working example using Path instead of XPath (since I don't have your XML source) but you should be able to get it to work the same way
Add this trigger in the DataTemplate
<DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType={x:Type ListBox}}, Path=SelectedItem.retract}" Value="True" >
<Setter TargetName="ListboxIemtextBlock" Property="Visibility" Value="Hidden"/>
</DataTrigger>