I have this combobox which contains a data tempate with a checkbox and a textbox. All is working but I would like to make it a little bit easier to select a value. Right now I have to click on the chechbox to change the value of the check box. Now I would like to be able to just click on the item in the combobox which also should toggle the checkbox.
Is this possible? If yes then how?
Here is a picture of my solution right now
Here is the code for my combobox
<ComboBox Name="employeeComboBox" Margin="2,0,2,0"
ScrollViewer.CanContentScroll="False"
DataContext="{Binding EmployeesOverviewViewModel, Source={StaticResource ViewModelLocator}}"
ItemsSource="{Binding Employees}">
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<CheckBox IsChecked="{Binding Path=IsSelected}" Margin="2,0,2,2" VerticalAlignment="Center"/>
<TextBlock Text="{Binding Path=Name}" VerticalAlignment="Center"/>
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
Change your DataTemplate to this:
<DataTemplate>
<CheckBox IsChecked="{Binding Path=IsSelected}"
Margin="2,0,2,2"
Content="{Binding Path=Name}"
VerticalAlignment="Center"/>
</DataTemplate>
and it should work.
Why don't you use the Content property on the CheckBox?
<CheckBox Content="Hello, World" />
This way, the checkbox would toggle even when you click on the text (content).
As for your specific case, you can bind Name to Content instead of creating a separate TextBlock for it, and it should work as you want it to.
Whats happning here is, Your Checkbox and text are two different entities, you need to make them one, by simply using checkbox's text property and binding it. that way whenever you click on text your checkbox gets selected.
Related
I have a ListBox in my WPF MVVM app using the following code:
<GroupBox Grid.Column="0" Margin="0,0,0,-58">
<DockPanel>
<TextBlock DockPanel.Dock="Top"
HorizontalAlignment="Center"
Margin="0,0,0,8"
FontWeight="Bold"
Text="{x:Static p:Resources.AvaliableLEDsLabel}" />
<ListBox Name="AvailableLEDsListbox" SelectionMode="Extended"
dd:DragDrop.IsDragSource="True"
dd:DragDrop.IsDropTarget="True"
dd:DragDrop.DropHandler="{Binding}"
ItemTemplate="{StaticResource DataTemplateListBoxItem}"
ItemsSource="{Binding AvailableLeds}"
ScrollViewer.VerticalScrollBarVisibility="Hidden"
>
<ListBox.GroupStyle>
<StaticResource ResourceKey="StyleListBoxGroup" />
</ListBox.GroupStyle>
</ListBox>
</DockPanel>
</GroupBox>
This displays grouped lists of devices, with LEDs under them. The DataTemplate is the following:
<GroupStyle x:Key="StyleListBoxGroup">
<GroupStyle.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Button Command="{Binding HideGroupCommand}">X</Button>
<TextBlock VerticalAlignment="Center"
HorizontalAlignment="Left"
FontWeight="Bold"
Text="{Binding Name}" />
</StackPanel>
</DataTemplate>
</GroupStyle.HeaderTemplate>
</GroupStyle>
<DataTemplate x:Key="DataTemplateListBoxItem">
<TextBlock x:Name="LedId" Text="{Binding LedId}"/>
</DataTemplate>
I would like to make the X button in the header hooked up to the HideGroupCommand toggle the hiding of all the items under that particular header. How would I go about doing this? Thanks in advance.
You have few options.
First one :
You would need to have a property in your view model something like 'ListBoxVisibility' then u would bind that property to your UI. In command text u just changed visibility property of that property in view model- so u have it reflected on UI. This visibility property can be of type 'bool' , or 'Visibility' or whatever. Only if it's type of Visibility u don't need converter when binding.
NOTE : Some people use it - even though it kinda goes out of general principel of MVVM patter. But sometimes u have to do it.
Second
If wanna stick to MVVM , then u need to fully separate your UI from your viewmodel. Create click event and change visibility.
I have a ComboBox that has a check box and a text block inside it.
I would like that when an item in the ComboBox is selected, the state of CheckBox contained by the ComboBox item is toggled.
I have looked a fair bit here and elsewhere on the internet but I didn’t find anything specific to this.
Please help. Thanks.
I would try something like this:
<ComboBox ItemsSource="{Binding MySource}">
<ComboBox.ItemTemplate>
<DataTemplate>
<ToggleButton x:Name="Wrapper"> <!-- CheckBox are good too -->
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding TheString}" />
<CheckBox IsChecked="{Binding Path=IsChecked, ElementName=Wrapper, Mode=OneWay}" />
</StackPanel>
</ToggleButton>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
You just have to rewrite the template for the the "Wrapper" ToggleButton (or CheckBox) so that it only shows its content.
I hope I was helpful.
I have a datagrid bound to a collection of timesheet lines.
In each row I have included a custom usercontrol consisting of 3 Radio buttons in the last column. These indicate whether each line should be "Bill", "Hold" or "Write off".
In the header template for the datagrid, i have included a slightly different control which allows the user to select "Bill All", "Hold All", "Write Off All"
[The buttons in question...1
How can i get the header buttons to affect change on the row buttons beneath.
This is my first attempt at using WPF, and I'm trying to ensure i stick with proper WPF ideals and structures. I have tried to assign an Click event to the header buttons which would create an array of the row buttons, setting their IsSelected property to true.
But i'm sure i should be using something like an Attached Property.
These are the Radio buttons wrapped up into a UserControl
LineButtons.xaml
<StackPanel Orientation="Horizontal" IsHitTestVisible="True">
<RadioButton Style="{StaticResource GridLineButton}" x:Name="BillButton" Template="{DynamicResource ToggleButtonLeft}">Bill</RadioButton>
<RadioButton Style="{StaticResource GridLineButton}" x:Name="HoldButton" Template="{DynamicResource ToggleButtonMid}">Hold</RadioButton>
<RadioButton Style="{StaticResource GridLineButton}" x:Name="WOButton" Template="{DynamicResource ToggleButtonRight}">Write Off</RadioButton>
</StackPanel>
HeaderButtons.xaml
<StackPanel Orientation="Horizontal" IsHitTestVisible="True">
<RadioButton Style="{StaticResource GridLineButton}" >Bill All</RadioButton>
<RadioButton Style="{StaticResource GridLineButton}" >Hold All</RadioButton>
<RadioButton Style="{StaticResource GridLineButton}" >Write Off All</RadioButton>
</StackPanel>
Datagrid.xaml
<DataGridTemplateColumn>
<DataGridTemplateColumn.HeaderTemplate>
<DataTemplate>
<local:HeaderButtons Padding="0"/>
</DataTemplate>
</DataGridTemplateColumn.HeaderTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<local:LineButtons Padding="4"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
I want all the row buttons to be setable from the header buttons.
E.g. If a user clicks Bill All (in the header) i'd like all the row "Bill" buttons to be set to Selected.
Any help would be much appreciated.
I've searched and tried many different things and can't find anything that works. I have two columns in a GridView that are CheckBoxes. The rows are of values that can be set to test the device connected.
Column one is saying if the row contains the default value and is bound to the value from the database whether or not it's checked. This can't be changed by the user. I've set the IsEnabled="false".
Column two allows the user to select a custom value other than the default value. I would love to have it so the row with the default value doesn't have this checkbox. Can't figure out how to make it invisible. So I bind the IsEnabled to a bool in the ViewModel that is set in the code behind based on if it's a default value or not before adding it to the ObservableCollection used for the ListView that holds this GridView. Yet the user can still click on this checkbox in the Default Value's row and it will change to show it was checked. I don't want that either.
I remember in WinForms there was a way to make the CheckBox completely ReadOnly but I could still manipulate its checked state in code. I can't seem to do that with WPF. Help!
XAML:
<GridViewColumn x:Name="lsvThresholdDefaultValue" Header="Default" Width="50">
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox x:Name="cbxDefaultValue"
IsChecked="{Binding DefaultValue}"
IsEnabled="False"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn x:Name="lsvThresholdCustomValue" Header="Use This" Width="55">
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox x:Name="cbxUseThis"
IsChecked="{Binding UseThisValue}"
IsHitTestVisible="False"
IsEnabled="{Binding AllowUse}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
Code Behind:
if (oneThreshold.DefaultValue)
{
oneThreshold.AllowUse = false;
}
else
{
oneThreshold.AllowUse = true;
}
EDIT:
Here is what the answer is that I got from my coworker (which is what I really wanted to do anyway).
At the top added (maintenance is my namespace):
<Window.Resources>
<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
<maintenance:InverseBooleanToVisibilityConverter
x:Key="InverseBooleanToVisibilityConverter" />
</Window.Resources>
Then on the checkbox, I replaced IsEnabled with Visibility:
<CheckBox x:Name="cbxUseThis"
IsChecked="{Binding UseThisValue}" IsHitTestVisible="False"
Visibility="{Binding AllowUse, Converter={StaticResource
BooleanToVisibilityConverter}}" />
Then to make the box NOT appear on the default value row, I added Visibility:
<CheckBox x:Name="cbxDefaultValue"
IsChecked="{Binding DefaultValue}" IsEnabled="False"
Visibility="{Binding AllowUse, Converter={StaticResource
InverseBooleanToVisibilityConverter}}"/>
The Inverse... was some code he wrote since there is no negate on BooleanToVisibilityConverter.
I have a listbox and I have set the itemstemplate as shown below.
XAML:
<ListBox ItemsSource="{Binding DataList}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<CheckBox x:Name="CheckBox" HorizontalAlignment="Center" VerticalAlignment="Center" />
<TextBlock x:Name="TextBlock" Text="{Binding Title}" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="10,0,0,10" FontSize="26.667" TextWrapping="Wrap"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I want to get which all check box has been selected.Is there any way to get checkbox control for each item so that I can check its IsChecked property.
I can think of a way of binding the IsChecked property.But Is there any other way to do it?
Yes. One way to do is to bind the IsChecked property. And if you are using MVVM, probably that's the right way to do it.
Anyways, if you don't want to go the binding way, and assuming you want to iterate over all items of listbox, and prepare a list of checked items, see if this helps:
WPF - Find a Control from DataTemplate in WPF
If you're already binding to the Title property in the item template then it would certainly make sense to bind to IsChecked, too.
If you really need to, you can walk the visual tree by using the VisualTreeHelper to find the CheckBox instances.
Binding the IsChecked property to a boolean property on your object instance contained within DataList would be the simplest and cleanest way. Alternatively, if you want to avoid code behind, then you could write an attached property.
See also How to access a specific item in a Listbox with DataTemplate?
I bet it cannot be simpler than that:
<ListBox SelectionMode="Multiple" >
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox
IsChecked="{Binding Path=IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"
Content="{Binding Path=Content, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>