I'm using the DoubleUpDown UserControl from the Extended WPF Toolkit in my current project. Now I have to bind a RelayCommand to the DoubleClick event of that DoubleUpDown, but it is not working. I've assigned that DoubleClick to all kinds of different UserControls so far and usually it was working fine or sometimes I had to wrap it into an empty UserControl-Element which would then hold the CommandBinding, but so far I always got it working.
This is what I tried so far:
<UserControl Grid.Row="7"
Grid.Column="0">
<xctk:DoubleUpDown Value="{Binding EditableDevice.SelectedLoadReceptor.DecimalPlaces,
UpdateSourceTrigger=PropertyChanged,
Mode=TwoWay, FallbackValue='1'}"
FormatString="F0"
Minimum="0"
Maximum="10">
<xctk:DoubleUpDown.InputBindings>
<MouseBinding Command="{Binding EditDeviceCommand}"
Gesture="LeftDoubleClick" />
</xctk:DoubleUpDown.InputBindings>
<i:Interaction.Triggers>
<i:EventTrigger EventName="LeftDoubleClick">
<cmd:EventToCommand Command="{Binding EditDeviceCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</xctk:DoubleUpDown>
<UserControl.InputBindings>
<MouseBinding Command="{Binding EditDeviceCommand}"
Gesture="LeftDoubleClick" />
</UserControl.InputBindings>
</UserControl>
I'm usually fine with using the InputBindings, but not with the DoubleUpDown...
I wonder what is causing the issue. Does anyone here have an idea or a workaround?
Regards
Ralf
Hmm, still couldn't figure out what is wrong here. In the meantime I'll just use CodeBehind where ever possible by using the regular MouseDoubleClick-Event.
Related
I have the following XAML snippet:
<TextBox x:Name="FilterTB" TextChanged="FilterTB_TextChanged"/>
<Button x:Name="CancelFilterSelectionButton" FontWeight="Bold" Content="X"/>
I'd like to erase the content of the TextBox when the user presses the Button.
Of course doing so from Code Behind is a trivial task, but I wanted to accomplish it only through the use of XAML, and so using Triggers.
I tried researching on the net, but I either found uncorrect solutions, or overly-convoluted solutions, so I'd like to hear some clean and compact solutions.
Here I had a spare minute, hope this helps, cheers.
namespaces;
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:ei="clr-namespace:Microsoft.Expression.Interactivity.Core;assembly=Microsoft.Expression.Interactions"
and easy peasy.
<StackPanel Orientation="Horizontal"
HorizontalAlignment="Center"
VerticalAlignment="Center">
<TextBox x:Name="ThatThangToClear" Width="250"/>
<Button x:Name="ClearThatThang" Content="Clear That Thang" Margin="5,0">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<ei:ChangePropertyAction
TargetName="ThatThangToClear"
TargetObject="{Binding ElementName=ThatThangToClear}"
PropertyName="Text" Value="{x:Null}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</Button>
</StackPanel>
Oh, and P.S. - You really only need either TargetName OR TargetObject but I included both for examples sake.
Trying to bind the click or checked event on a WPF chekbox to a command in my viewmodel, but im unsure on the technique and the event names, can anyone point me in the right direction?
For now the code compiles but the the trigger does not call the FooCommand
<CheckBox IsChecked="{Binding PartData.ReportIncluded, Mode=TwoWay}"
VerticalAlignment="Center">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseLeftButtonDown" >
<i:InvokeCommandAction Command="{Binding FooCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</CheckBox>
Looks like you're missing the "On" prefix of your event, i.e. OnMouseLeftButtonDown or OnPreviewMouseLeftButtonDown
Ok so here's what I got, as example.
<sdk:DataGridTemplateColumn>
<sdk:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<HyperlinkButton Content="Delete" Visibility="{Binding Priority, Converter={StaticResource FDPriorityToVisibilityConverter}}" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<cal:ActionMessage MethodName="DeleteRule">
<cal:Parameter Value="{Binding Id}"/>
</cal:ActionMessage>
</i:EventTrigger>
</i:Interaction.Triggers>
</HyperlinkButton>
</DataTemplate>
</sdk:DataGridTemplateColumn.CellTemplate>
</sdk:DataGridTemplateColumn>
What I want to do is replace the HyperlinkButton control with a Button (Essentially just deleting "Hyperlink" from the tag ), but it doesnt respect the eventtrigger when I do that. So when clicked it just doesnt do anything. I figured I could maybe solve this with replacing cal:ActionMessage with EventToCommand but I must not be implementing correctly.
Short version of question, can someone shed some light on how I can get the functionality the existing HyperlinkButton accomplishes, but with a button control so I can give it an icon instead of just text that says Delete? Thanks for any insight!
For answer read my comment made, I believe this issue is circumstantial and a workaround was deliberated.
How to fire RoutedEvents of TextBlock in ViewModel from code behind in wpf.
Kindly let me know, how I can bind routed events in wpf code behind. Thanks
Well I use this (you will need System.Windows.Interactivity in Silverlight, but I suspect it's similar in WPF):
xmlns:GalaSoft_MvvmLight_Command="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.SL4"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
<TextBlock Text="{Binding InputValue, Mode=TwoWay}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="GotFocus">
<GalaSoft_MvvmLight_Command:EventToCommand Command="{Binding InputValueGotFocusCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</TextBlock>
You can do this easy in Blend
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How to add a Blend Behavior in a Style Setter
when I use an interaction trigger in a style, I am getting the following error, 'triggers is not attachable element of type style'. Any explanation what this error actually means and how to solve it.
For reference take a look at MVVM Light toolkit's EventToCommand example.
In this particular case, I am using Timeline control from Infragistics which represents events as EventTitle and when the EventTitle is clicked, I would like to raise the command (Note that Timeline control doesn't define any event like EventTitleClicked). Currently I am able to achieve the functionality by using events and calling my ViewModel method from the code behind, instead I would like to invoke the command directly from xaml.
<Style x:Key="EventTitleTopStyle" TargetType="igTl:EventTitle">
<!-- The following is not working -->
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseLeftButtonDown">
<!--<cmd:EventToCommand Command="{Binding MyCommand}" />-->
</i:EventTrigger>
</i:Interaction.Triggers>
<!-- Using event setter instead to achieve the same -->
<EventSetter Event="MouseLeftButtonDown" Handler="TopTitleMouseLeftButtonDown" />
....
<interactivity:Interaction.Triggers>
<interactivity:EventTrigger EventName="MouseDoubleClick">
<behaviours:ExecuteCommandAction Command="{Binding Path=DataContext.YourCommand, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type UserControl}}}"
CommandParameter="{Binding }"/>
</interactivity:EventTrigger>
</interactivity:Interaction.Triggers>
<TextBox x:Name="EditableControlTextBox" Loaded="RoomTextBox_Loaded">
<interactivity:Interaction.Triggers>
<interactivity:EventTrigger EventName="LostFocus">
<!--<cmd:EventToCommand Command="{Binding MyCommand}" />-->
</interactivity:EventTrigger>
</interactivity:Interaction.Triggers>
</TextBox>