I have a couple of xamDataGrids (version 11.2) on my WPF form. I created a style to colour the whole row yellow when a trigger is met.
<Style TargetType="{x:Type igDP:DataRecordPresenter}" >
<Style.Triggers>
<DataTrigger Binding="{Binding Path=somePropertyNameHere}" Value="1">
<Setter Property="Background" Value="#ECEC85" />
</DataTrigger>
</Style.Triggers>
</Style>
The thing is that the second grid viewModel doesn't have the property that the data trigger is using and this generates a binding exception that I would like to fix. So I think the easiest way to fix this is to apply the style to the first grid specifically but I don't know how to do this...any help please?
You can give a specific style to the grid. refer the below code.
<Page.Resources>
<Style x:Key="FirstGridDRP" TargetType="igDP:DataRecordPresenter" >
<Style.Triggers>
<DataTrigger Binding="{Binding Path=somePropertyNameHere}" Value="1">
<Setter Property="Background" Value="#ECEC85" />
</DataTrigger>
</Style.Triggers>
</Style>
</Page.Resources>
<Grid>
<igDP:XamDataGrid x:Name="FirstGird">
<igDP:XamDataGrid.FieldLayoutSettings>
<igDP:FieldLayoutSettings DataRecordPresenterStyle="{StaticResource FirstGridDRP}"/>
</igDP:XamDataGrid.FieldLayoutSettings>
</igDP:XamDataGrid>
<igDP:XamDataGrid x:Name="SecondGrid">
</igDP:XamDataGrid>
</Grid>
Related
I am working on WPF MVVM project and I have a ObservableCollection with class that contains a boolean property and a string property. That Observablecollection is bound xceedwpfgrid. I am trying to add a datatrigger that checks the boolean and based on that property shows or hides the row. I tried a few things but im not able to hit the datatrigger on the xceedgrid can someone help me.
<TreeGrid:XceedColumnBindingGrid ItemsSource="{Binding Path=.DataList}"
AutoCreateColumns="False"
IsTabStop="False"
SelectedItem="{Binding Path=.SelectedItem}"
ContextMenuBuilder="{Binding Path=.ContextMenuBuilder}">
<TreeGrid:XceedColumnBindingGrid.Resources>
<Style TargetType="{x:Type DataGridRow}" >
<Style.Triggers>
<DataTrigger Binding="{Binding Path=.DataList.IsOnExclusionList}" Value="true">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=.DataList.IsOnExclusionList}" Value="false">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
</Style>
</TreeGrid:XceedColumnBindingGrid.Resources>
<TreeGrid:XceedColumnBindingGrid.Columns>
<xcdg:Column FieldName="IsOnExclusionList" Title="IsOnExclusionList" Width="30" CellContentTemplate="{StaticResource cellCashDeliveringTemplate}" CellEditorDisplayConditions="None"/>
<xcdg:Column FieldName="Name" Title="Name" Width="30" CellContentTemplate="{StaticResource cellCashDeliveringTemplate}" CellEditorDisplayConditions="None"/>
</TreeGrid:XceedColumnBindingGrid.Columns>
</TreeGrid:XceedColumnBindingGrid>
I am hoping that the datatrigger will show and hide the row depnding on the boolean variable
So I need to know how to set up a xmlns to let me use the CalendarMode in a Trigger's value.
I have tried using xmlns:cal="clr-namespace:System.Windows.Controls", xmlns:cal="clr-namespace:System.Windows.Controls.Calendar" and I've built the project each time, but I got error telling me that the CLR namespace is undefined and cannot be found.
Here is where I used it
<DataTrigger Binding="{Binding Source=_Calendar, Path=Calendar.DisplayMode}">
<DataTrigger.Value>
<cal:CalendarMode>Month</cal:CalendarMode>
</DataTrigger.Value>
<Setter Property="Grid.Opacity" Value="1" />
</DataTrigger>
I guess I could just listen to the DisplayModeChanged event on the calendar but since I've been searching online for this solution all day, I'd really like to know how I can approach this problem in this way.
Any input will be highly appreciated. Thanks!
actually I did not understand exactly what you need. But I'll try to help.
the definition we see:
then able to use the xaml we have to do:
xmlns:presentation="clr-namespace:System.Windows.Controls;assembly=PresentationFramework"
Now, if you want something to happen with a dependency property of the own control, you should use Triggers and not DataTriggers
Sample:
<Calendar Height="170" HorizontalAlignment="Left" Margin="83,112,0,0" Name="calendar1" VerticalAlignment="Top" Width="180">
<Calendar.Style>
<Style TargetType="Calendar">
<Setter Property="Opacity" Value="0.4"/>
<Style.Triggers>
<Trigger Property="SelectionMode" Value="{x:Static presentation:CalendarMode.Month}">
<Setter Property="Opacity" Value="1.0"/>
</Trigger>
</Style.Triggers>
</Style>
</Calendar.Style>
</Calendar>
Normally DataTriggers are used for objects created by you, which implementational INotifyPropertyChanged. Do not mess.
Now, if you want to change another control (when CalendarMode changes) you should do:
<Calendar Height="170" HorizontalAlignment="Left" Margin="83,112,0,0"
Name="calendar1" VerticalAlignment="Top" Width="180"/>
<Grid>
<Grid.Style>
<Style TargetType="Grid">
<Setter Property="Opacity" Value="0.5"/>
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=calendar1, Path=CalendarMode}">
<DataTrigger.Value>
<presentation:CalendarMode>Month</presentation:CalendarMode>
</DataTrigger.Value>
<Setter Property="Opacity" Value="1.0"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Grid.Style>
</Grid>
I suggest you read more about triggers, datatriggers and bindings.
I have an very, very huge application in WPF with a Ribbon in it. The ribbon contain a bunch of RibbonControls, each binded to a different command. On every control, we put a ToolTip. We overrided these ToolTip templates to use a control of our own, which gives more information. We could call il a superToolTip.
The override of the tooltip templates is working just fine. Now we want to unify the way the tooltips are showing. What I mean is we want the same initialShowDelay, ShowDuration, etc., for every single tooltips in the application (there are tooltips elsewhere than in the ribbon, which use the same home made control that the ones of the ribbon). So, I binded the ToolTipService.InitialShowDelay, ToolTipService.BetweenShowDelay, ToolTipService.ShowDuration properties to global constants in the application.
InitialShowDelay :
The property InitialShowDelay is working just fine for almost every control in the application... The only one not working is RibbonSplitButton, which keep the default value of 400...
BetweenShowDelay :
The property BetweenShowDelay is working just fine when the tooltip is on a ListBoxItem... but not working in the Ribbon nor in a complex control of our own (a Property Grid).
These properties are set in the control on which the tooltip is set, and not on the tooltip themselves.
I honestly have absolutely no idead why it is behaving this way... Anyone has any idea on what could cause this or how to solve it?
If you need more information, do not hesitate to ask, i really am desperate about this.
Thank you very much!
The problem was that the condition for BetweenShowDelay wasn't respected, you need to have a value set for the property "ToolTip", in this case you were using a template, so the value was at null. You can resolve it this way :
<Style x:Key="{x:Type ToolTip}" TargetType="ToolTip">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToolTip">
<Utils:ToolTipControl DataContext="{Binding ToolTipInfo}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
and then place the dummy in the specified button :
<!-- RibbonButton -->
<Style TargetType="{x:Type ribbon:RibbonButton}" BasedOn="{StaticResource RibbonControlStyle}" >
<Style.Triggers>
<DataTrigger Value="true" >
<DataTrigger.Binding>
<Binding Converter="{StaticResource IsBoundConverter}" />
</DataTrigger.Binding>
<Setter Property="Command" Value="{Binding}" />
<Setter Property="ribbon:RibbonControlService.Label" Value="{Binding Name}" />
<Setter Property="ribbon:RibbonControlService.SmallImageSource" Value="{Binding Icon}" />
<Setter Property="ribbon:RibbonControlService.LargeImageSource" Value="{Binding LargeIcon}" />
<Setter Property="Visibility" Value="{Binding Visibility}" />
<Setter Property="ToolTip" Value="dummy"/> <!-- Use dummy value to force tooltip to show and to Bind the tooltip-->
</DataTrigger>
<DataTrigger Value="false" >
<DataTrigger.Binding>
<Binding Converter="{StaticResource IsBoundConverter}" />
</DataTrigger.Binding>
<Setter Property="Background" Value="#FF900000" />
</DataTrigger>
</Style.Triggers>
</Style>
That way the dummy value will be override.
:D
Here is some code showing how I implemented my ToolTips
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:ribbon="http://schemas.microsoft.com/winfx/2006/xaml/presentation/ribbon"
...>
...
<!-- Ribbon Tooltips Style -->
<Style TargetType="ribbon:RibbonToolTip">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Utils:ToolTipControl DataContext="{Binding ToolTipInfo}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
...
<!-- RibbonControl -->
<Style x:Key="RibbonControlStyle">
<Setter Property="ribbon:RibbonControlService.ToolTipTitle" Value="dummy" /><!-- Use dummy value to force tooltip to show -->
<Setter Property="ToolTipService.InitialShowDelay" Value="{x:Static Utils:ToolTipViewModel.ToolTipInitialDelay}"/>
<Setter Property="ToolTipService.ShowDuration" Value="{x:Static Utils:ToolTipViewModel.ToolTipShowDuration}"/>
<Setter Property="ToolTipService.BetweenShowDelay" Value="{x:Static Utils:ToolTipViewModel.ToolTipBetweenShowDelay}"/>
<!-- This style is used to select the "Editors" tab when opening Editor without a world, and to select the "Home" tab otherwise -->
<Style.Triggers>
<DataTrigger Binding="{Binding IsWorldLoaded, Source={x:Static ViewModels:ViewportSettingsViewModel.Instance}}" Value="false">
<Setter Property="ribbon:Ribbon.SelectedIndex" Value="2"/>
</DataTrigger>
<DataTrigger Binding="{Binding IsWorldLoaded, Source={x:Static ViewModels:ViewportSettingsViewModel.Instance}}" Value="true">
<Setter Property="ribbon:Ribbon.SelectedIndex" Value="0"/>
</DataTrigger>
</Style.Triggers>
</Style>
Also, for the splitbutton problem it was that the tooltipservice werent set for the child of the splitbutton ( the two parts) wich are named PART_HeaderButton and PART_ToggleButton. So even if you create your own style it will be override by the style of the ribbonsplit button ( see this link for the splitbutton.xaml file :
https://wpfcontrolextension.svn.codeplex.com/svn/trunk/Common/RibbonControlsLibrary/v3.5/Themes/Generic.xaml
So to bypass this overriding problem ( because we don't have access to the part directly we have to go via code. Im my case, I overrided the RibbonSplitButton class and the OnLoadTemplate method. That way with getchild we can access the property of the part and change them.
public partial class DuniaRibbonSplitButton : RibbonSplitButton
{
public DuniaRibbonSplitButton()
{
InitializeComponent();
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
var HeaderButton = base.GetTemplateChild("PART_HeaderButton");
var ToggleButton = base.GetTemplateChild("PART_ToggleButton");
OverrideAttributes(HeaderButton as Control);
OverrideAttributes(ToggleButton as Control);
}
private void OverrideAttributes(Control control)
{
control.ToolTip = "Dummy";
ToolTipService.SetInitialShowDelay(control, ToolTipViewModel.ToolTipInitialDelay);
ToolTipService.SetShowDuration(control, ToolTipViewModel.ToolTipShowDuration);
ToolTipService.SetBetweenShowDelay(control, ToolTipViewModel.ToolTipBetweenShowDelay);
}
}
I'm thinking out different ways to have a WPF ComboBox show blank as if nothing is selected when IsEnabled is set to false. Like always I'm trying to do this without having to redefine the whole control template for the ComboBox which is always a struggle I have with WPF. If anybody has any solutions more elegant than redefining the whole ComboBox control template please let me know.
The reason for what I'm trying to do is I have a CheckBox that represents an "All" option and when checked it disables the ComboBox which is used to pick only a single individual item. If my CheckBox is checked it is sometimes confusing to the users to see a value remaining in the ComboBox since that value has no meaning in that state of the UI.
Another requirement is that the solution cannot modify the SelectedValue, SelectedIndex, or SelectedItem values of the ComboBox since I would like to retain the previuosly selected item in the case that the users unchecks the "All" CheckBox.
Solution based on HCL's answer:
<ComboBox IsEnabled="{Binding ElementName=myCheckBox, Path=IsChecked}"
ItemsSource="{Binding Path=MyItems}"
SelectedValue="{Binding Path=MySelectedItem}">
<ComboBox.ItemTemplate>
<DataTemplate>
<ContentControl x:Name="content" Content="{Binding MyItemDescription}" />
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=ComboBox}, Path=IsEnabled}"
Value="False">
<Setter TargetName="content"
Property="Visibility"
Value="Hidden" />
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
You can do something with triggers:
Try setting the ItemTemplate to an empty DataTemplate when the box is disabled. This will affect the rendering of the selected item and therefore hide it.
Another simple but not very nice solution would be to set the foreground color to the same as a background color.
I believe you can do this with a Style, rather than redefining the control template. Use a Trigger on the IsEnabled property to set the text shown in the ComboBox. Altering the SelectedItem would be my first approach, but since you don't want to do that, you may find success setting the DisplayMemberPath. Something like this (untested)...
<Style TargetType="{x:Type ComboBox}">
<Style.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Trigger.Setters>
<Setter Property="DisplayMemberPath" Value="{x:Null}"/>
</Trigger.Setters>
</Trigger>
</Style.Triggers>
</Style>
Here's a style that does what you want. It employs a technique that I use all the time: a grid that contains multiple versions of the control, and data triggers that ensure that only one version is visible at any one time.
<ComboBox.Style>
<Style TargetType="ComboBox">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<DockPanel>
<CheckBox x:Name="IsActive" DockPanel.Dock="Left"/>
<Grid>
<ComboBox
ItemsSource="{TemplateBinding ItemsSource}"
SelectedItem="{TemplateBinding SelectedItem}"
SelectedIndex="{TemplateBinding SelectedIndex}"
SelectedValue="{TemplateBinding SelectedValue}">
<ComboBox.Style>
<Style TargetType="ComboBox">
<Setter Property="Visibility" Value="Visible"/>
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=IsActive, Path=IsChecked}" Value="False">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
</Style>
</ComboBox.Style>
</ComboBox>
<ComboBox>
<ComboBox.Style>
<Style TargetType="ComboBox">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=IsActive, Path=IsChecked}" Value="False">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</ComboBox.Style>
</ComboBox>
</Grid>
</DockPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ComboBox.Style>
This preserves the selected item, selected index, and selected value, just as you want. In fact, it does this a little too well; there's not actually a way of telling that the user deactivated the combo box, since there's no property on ComboBox that exposes this information. I'd probably actually implement this as a custom control derived from ComboBox that exposed the value of the check box as an IsActive property. There are lots of other ways to do it.
Why cant I code like this
<Border Width="130" Height="70">
<Border.Triggers>
<DataTrigger Binding="{Binding Path=CurrentStatus}" Value="0">
<Setter Property="Style" Value="{StaticResource ResourceKey=ListBoxItemBorder}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=CurrentStatus}" Value="200">
<Setter Property="Style" Value="{StaticResource ResourceKey=ListBoxItemBorderInactive}"/>
</DataTrigger>
</Border.Triggers>
</Border>
I get this error
Failed object initialization (ISupportInitialize.EndInit).
Triggers collection members must be of type EventTrigger.
Error at object '4_T' in markup file
What am I doing wrong plz help.
Abe is correct and explains the limitations well. One thing you might want to consider is:
Instead of having two border styles, and trying to pick between them based on a trigger...
Use a single style on your border, this style's setters represent your 'normal' look.
This style also contains your DataTrigger, and your DataTrigger has a collection of setters which essentially represents your second style (which have higher priority than the standard setters when this trigger evaluates to true!
Edit:
Something like this -
<Style TargetType="Border" x:Key="BorderStyle">
<!-- These setters are the same as your normal style when none of your triggers are true -->
<Setter Property="BorderBrush" Value="Black" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=CurrentStatus}" Value="0">
<!-- These setters are the same as your ListBoxItemBorder style -->
<Setter Property="BorderBrush" Value="Green" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=CurrentStatus}" Value="200">
<!-- These setters are the same as your ListBoxItemBorderInactive style -->
<Setter Property="BorderBrush" Value="Gray" />
</DataTrigger>
</Style.Triggers>
</Style>
Unfortunately, only EventTriggers can be applied directly to elements. If you want to use a Trigger or DataTrigger, they have to be in a Style, ControlTemplate, or DataTemplate.
From the resource names, it looks like this is a Border inside a ListBoxItem ControlTemplate. You could easily move the triggers into the template's triggers collection.
Here is a way for no limitations triggers.
Example:
<Border Width="130" Height="100" Grid.Row="1">
<ListBox x:Name="lstItems" ItemsSource="{Binding TestItems}">
</ListBox>
<tg:TriggerExtensions.Triggers>
<tg:TriggerCollections>
<tg:DataTriggerInfo Binding="{Binding CurrentStatus}" Value="0">
<tg:DataTriggerInfo.Setters>
<tg:SetterInfo ElementName="lstItems" Property="Style" Value="{StaticResource ListBoxRed}"/>
</tg:DataTriggerInfo.Setters>
</tg:DataTriggerInfo>
<tg:DataTriggerInfo Binding="{Binding CurrentStatus}" Value="0" IsInvert="True">
<tg:DataTriggerInfo.Setters>
<tg:SetterInfo ElementName="lstItems" Property="Style" Value="{StaticResource ListBoxBlue}"/>
</tg:DataTriggerInfo.Setters>
</tg:DataTriggerInfo>
</tg:TriggerCollections>
</tg:TriggerExtensions.Triggers>
</Border>
Link Sample
Link Component Github