<ComboBox x:Name="ddDate" SelectedItem="{Binding SelectedDate}" HorizontalAlignment="Right" VerticalAlignment="Center" Width="170" Margin="0,4,0,0" Style="{StaticResource Light-ComboBoxStyle}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<cal:ActionMessage MethodName="DropDownSelectionChanged" cal:View.Model="{Binding Source={StaticResource VMResource}}">
<!--<cal:Parameter Value="{Binding Hierarchy}" />-->
</cal:ActionMessage>
</i:EventTrigger>
</i:Interaction.Triggers>
<ComboBoxItem IsSelected="True">Current Week</ComboBoxItem>
<ComboBoxItem>Last Week</ComboBoxItem>
<ComboBoxItem>Year to Date</ComboBoxItem>
</ComboBox>
ComboxItem Value by default not selected when i have added attribute isSelected = True.
Please pay attention that each item in the combobox is ComboBoxItem therefore if you bind it to a string it will give you the value of ComboBoxItem.ToString()
You can use SelectedValue and SelectedValuePath properties to force the binding give you the value of each comboBoxItem content:
<ComboBox x:Name="ddDate" SelectedValuePath="Content" SelectedValue="{Binding SelectedDate}" HorizontalAlignment="Right" VerticalAlignment="Center" Width="170" Margin="0,4,0,0">
<ComboBoxItem IsSelected="True">Current Week</ComboBoxItem>
<ComboBoxItem>Last Week</ComboBoxItem>
<ComboBoxItem>Year to Date</ComboBoxItem>
</ComboBox>
Related
<ComboBox x:Name="PrimaryCountyFIPS" Grid.Row="3" Grid.Column="3" Margin="3"
IsSynchronizedWithCurrentItem="False"
IsEditable="True"
LostFocus="{Binding LostFocusCommand }"
ItemContainerStyle ="{StaticResource ComboBoxItemStyle}"
IsEnabled="{Binding IsChecked, ElementName=IncludePrimZipCodeCheckBox}"
ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type viewmodel:GeocoderDataCleanerViewModel}, AncestorLevel=1}, Path=DestinationColsDictionary}" DisplayMemberPath="Value" SelectedItem="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type viewmodel:GeocoderDataCleanerViewModel}, AncestorLevel=1}, Path=PrimaryCountyFIPSField, Mode=OneWay}">
</ComboBox>
I have a ComboBox that I am wanting to Bind it's lost focus event to a command that I have in it's ViewModel. When I try to bind it I get an error that says "LostFocus is not a method" How would I go about binding it to that Command or is that even possible?
I guess this is what you are looking for:
<ComboBox>
<i:Interaction.Triggers>
<i:EventTrigger EventName="LostFocus">
<i:InvokeCommandAction Command="{Binding Path=DoSomethingCommand}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</ComboBox>
I have this (simplified for SO) listbox:
<ListBox x:Name="CurriculumList"
ItemsSource="{Binding FilteredCurriculums}"
SelectedIndex="0"
SelectionMode="Single"
IsSynchronizedWithCurrentItem="True">
<ListBox.ItemTemplate>
<DataTemplate>
<Button Name="TheButton"
HorizontalContentAlignment="Stretch"
Content="{Binding DisplayMember}"
CommandParameter="{Binding Id}"
Command="{Binding OpenCurriculumEditViewCommand}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I can navigate up and down the listBoxItems with the keyboard to change selection, but it doesn't change the detail view - the Button in the DataTemplate doesn't actually get clicked, so the OpenCurriculumEditViewCommandnever gets executed.
Anyone have any idea how I can do this?
Well, if you want to execute OpenCurriculumEditViewCommand when the ListBox selection changes, you could do the following:
First:
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
And then..
<ListBox x:Name="CurriculumList"
ItemsSource="{Binding FilteredCurriculums}"
SelectedIndex="0"
SelectionMode="Single"
IsSynchronizedWithCurrentItem="True">
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<i:InvokeCommandAction CommandParameter="{Binding Path=SelectedItem.Id, RelativeSource={RelativeSource AncestorType=ListBox}}" Command="{Binding OpenCurriculumEditViewCommand}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</ListBox>
You should not use a Button at all if you want it to trigger on selection.
I have a strange behavior of my application on some computers (it only happens at some customer pcs, i can't reproduce it on my machines).
I have an application to enter and view production scrap data. Every column is an control on it's own. The Expanders are accordion Controls from the WPF Toolkit.
Sometimes Textblocks are not visible:
When the bug happens to Textboxes, they are not even consuming any space:
This is the Datatemplate for the Content of the Accordion Item:
<DataTemplate x:Key="YieldAccContent" DataType="Models:Cell">
<DataTemplate.Resources>
<DataTemplate x:Key="It1">
<StackPanel >
<Label BorderBrush="{x:Static SystemColors.ControlLightBrush}" Padding="1" Height="22" BorderThickness="1" Content="{Binding Value}" Visibility="{Binding Cell.CellGroup.ParentMeasurement.IsEnabled, Converter ={StaticResource boolTovisinv}}"/>
<controls:NumberTextbox Text="{Binding Value, Converter ={StaticResource EmptyStringToNullConverter}, UpdateSourceTrigger=PropertyChanged}" Height="22" Width="80" Visibility="{Binding IsEnabledAndBad, Converter ={StaticResource boolTovis}}" Background="AliceBlue">
<i:Interaction.Triggers>
<i:EventTrigger EventName="LostFocus" >
<cmd:EventToCommand Command="{Binding MeasurmentViewModel.LostFocusCommand, Mode=TwoWay, Source={StaticResource Locator}}" PassEventArgsToCommand="True" />
</i:EventTrigger>
</i:Interaction.Triggers>
</controls:NumberTextbox>
<toolkit:MaskedTextBox Mask ="-99999999" Value="{Binding Value, Converter ={StaticResource EmptyStringToNullConverter}, UpdateSourceTrigger=PropertyChanged}" PromptChar=" " Height="22" Width="80" Visibility="{Binding IsEnabledAndGood, Converter ={StaticResource boolTovis}}" IncludeLiterals="True" IncludePrompt="False" Background="AliceBlue" ValueType="{x:Type sys:Int64}" GotFocus="MaskedTextBox_GotFocus_1" SelectionChanged="MaskedTextBox_SelectionChanged_1">
</toolkit:MaskedTextBox>
</StackPanel>
</DataTemplate>
</DataTemplate.Resources>
<StackPanel >
<Label BorderBrush="{x:Static SystemColors.ControlLightBrush}" BorderThickness="1" Padding="1" Height="22" Width="160" Content="{Binding YieldInput}" Background="Moccasin"/>
<Label BorderBrush="{x:Static SystemColors.ControlLightBrush}" BorderThickness="1" Padding="1" Height="22" Width="160" Content="{Binding YieldOutput}" Background="Moccasin"/>
<Label BorderBrush="{x:Static SystemColors.ControlLightBrush}" BorderThickness="1" Padding="1" Height="22" Width="160" Content="{Binding Yield}" Background="Moccasin"/>
<ItemsControl ItemsSource="{Binding Stations}" ItemTemplate="{StaticResource It1}">
</ItemsControl>
</StackPanel>
</DataTemplate>
This is the Accordion Item itself:
<System_Windows_Controls:Accordion ContentTemplate="{StaticResource Cont}" ItemTemplate="{StaticResource Head}" ItemsSource="{Binding Cells}" SelectedIndex="{Binding SelectedAccItem, Mode=TwoWay}" SelectionMode="{Binding MeasurmentViewModel.SelectionMode, Source={StaticResource Locator}}" HorizontalAlignment="Stretch" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectedItemsChanged" >
<cmd:EventToCommand Command="{Binding MeasurmentViewModel.SelectedItemsChangedCommand, Mode=TwoWay, Source={StaticResource Locator}}" PassEventArgsToCommand="True" />
</i:EventTrigger>
</i:Interaction.Triggers>
</System_Windows_Controls:Accordion>
What could be the cause of this behavior?
Going by your description about the missing TextBoxes not taking any space, I can only assume that you have a Trigger or Converter attached to their Visibility property. If you put a break point in the Converter that is attached to the offending TextBox, then you can debug whether this is the cause quite easily. I assume that the bool value(s) that you are binding to in the Visibility property is not being set correctly... please check whether this is true.
I was playing around, experimenting and googling this for the last hour and cannot figure out the problem. Basically, I have a listbox, each item has textblock and checkbox. I need to change text of textblock to green next to the checked checkbox. The code below is the best that I could come up with, but it doesn't work. Any help is appreciated.
<DataTemplate x:Key="ListBoxTemplate">
<Grid
Width="80">
<TextBlock
x:Name="textBlock"
HorizontalAlignment="Left"
Text="{Binding Data, Converter={StaticResource DataConverter}}"
Foreground="#FF859FAF"
FontSize="12"
TextWrapping="Wrap"
Width="50"
Margin="0"
Grid.Row="10" />
<CheckBox
x:Name="Btn6"
IsChecked="{Binding IsSelected, Mode=TwoWay}"
Cursor="Hand"
Padding="0"
HorizontalAlignment="Right"
Height="32"
VerticalAlignment="Bottom"
RenderTransformOrigin="0.5,0.5"
Width="26"
d:LayoutOverrides="GridBox">
<i:Interaction.Triggers>
<i:EventTrigger
EventName="textBlock">
<ei:ChangePropertyAction
TargetName="textBlock"
TargetObject="{Binding ElementName=textBlock}"
PropertyName="Width"
Value="100">
</ei:ChangePropertyAction>
<i:InvokeCommandAction
Command="{Binding SelectDataCommand, Source={StaticResource ControlViewModel}}"
CommandName="SelectDateRangeCommand"
CommandParameter="{Binding}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</CheckBox>
(sorry for my bad english)
This do not exactly answer your question but an easy alternative would be to bind IsSelected with the TextBox.Foreground and create a converter that return a SolidColorBrush green when the value is true
I have a combobox, using databinding and MVVM pattern. Everytime the user changes the selection, I added an event trigger, and a command is executed. the code is the following:
<ComboBox x:Name="myComboBox" Width="150" ItemsSource="{Binding Items}" >
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}"/>
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<i:InvokeCommandAction Command="{Binding LoadCommand}" CommandParameter="{Binding SelectedItem, ElementName=myComboBox}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</ComboBox>
the problem is that the parameter it passes is always null.
I changed the parameter from SelectedItem to SelectedIndex, this way I get the parameter and it is not null. Then i get my object using the index.