Here is the parent Xaml:
<Grid VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="20" />
<RowDefinition Height="*" /><!-- Should stretch vertically -->
</Grid.RowDefinitions>
<DockPanel Grid.Row="0">
<!-- Menu definition removed for brevity -->
</DockPanel>
<DockPanel Grid.Row="1"
VerticalAlignment="Stretch"
LastChildFill="True">
<ItemsControl DockPanel.Dock="Top"
ItemsSource="{Binding Designer}"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalAlignment="Stretch"
VerticalContentAlignment="Stretch"
Background="YellowGreen"/>
</DockPanel>
</Grid>
The ItemsSource binding is to an ObservableCollection. When the view is added to the collection, it gets updated in the main shell (view). Here is the UserControl that is added:
<UserControl x:Class="Prototype.StateMachineDesignerApp.Views.ProjectDesigner"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Prototype.StateMachineDesignerApp.Views"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="500"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalAlignment="Stretch"
VerticalContentAlignment="Stretch"
Margin="0">
<Grid VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="20" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Border Grid.Row="0"
BorderBrush="DimGray"
BorderThickness="1"
Background="LightSlateGray"
Margin="1" />
<Border Grid.Row="1"
Margin="1">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="3" />
<ColumnDefinition Width="5*" />
</Grid.ColumnDefinitions>
<Border Grid.Column="0"
BorderBrush="DarkGoldenrod"
BorderThickness="1" />
<GridSplitter Grid.Column="1"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch" />
<Border Grid.Column="2"
BorderBrush="DarkGoldenrod"
BorderThickness="1" />
</Grid>
</Border>
</Grid>
</UserControl>
The UserControl is not filling the entire vertical space:
Row[1] of the outermost Grid is stretching vertically as is evidenced by the ItemsControl.Background filling the area.
For reference, this is what I am expecting:
For what its worth, I've looked at numerous questions on SO regarding this exact issue but none of the solutions seem to help. Then again, none of the examples I saw used an ItemsControl with binding.
This happens because the ItemsControl throw all of our items into a vertically aligned StackPanel by default. It's very easy to change though, since the ItemsControl allows you to change which panel type is used to hold all the items.
<ItemsControl DockPanel.Dock="Top"
ItemsSource="{Binding Designer}"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalAlignment="Stretch"
VerticalContentAlignment="Stretch"
Background="Transparent">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
Related
I'm guessing this is probably an easy mistake I am making somewhere. I have a custom control, stripped down to the basics:
<local:CustomUserControl x:Class="Test.UI.CustomUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Test.UI"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300"
IsEnabled="True" Loaded="CustomUserControl_Loaded">
<!-- Main border -->
<Border BorderBrush="#9B000000" BorderThickness="1" Margin="0,0,0,0" Padding="0">
<Grid Margin="0" Name="outerGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Margin="0" Grid.Row="0" Grid.Column="0" Name="innerGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<!-- Backgound -->
<Rectangle Fill="#FF5B87B8" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Name="headerRectangle" PreviewMouseLeftButtonUp ="headerRectangle_MouseLeftButtonUp" />
<!-- Text -->
<Label Grid.Row="0" Grid.Column="0" HorizontalContentAlignment="Left" VerticalContentAlignment="Center" Name="HeaderLabel" Content="Hello" Margin="5,0,0,0" Foreground="White" FontSize="18" Background="#FF5B87B8" PreviewMouseLeftButtonUp ="HeaderLabel_MouseLeftButtonUp" />
</Grid>
<!-- Content -->
<ContentPresenter Name="MainContent" Grid.Row="1" Grid.Column="0" Content="{Binding Content}" />
</Grid>
</Border>
</local:CustomUserControl>
When displaying on the form, like the following, it draws a box, with a shaded top, with white text:
<ui:CustomUserControl Grid.Row="0" Grid.Column="2" Name="borderDiagram" Header="Hello" />
But, if I try and add content to the ContentPresenter:
<ui:CustomUserControl Grid.Row="0" Grid.Column="2" Name="borderDiagram" Header="Hello">
<Label Content="Um..." />
</ui:CustomUserControl >
It overrides the entire custom control, leaving only the 'Um...' label.
I presume I am managing to override the entire control when I set the content, so how does one ensure that it's the ContentPresenter that takes the content, rather than the parent control?
CustomUserControl has some default Content:
<!-- Main border -->
<Border> ...
</Border>
and that Content is replaced with <Label Content="Um..." />
to make it work as expected (Label displayed in ContentPresenter) you should define default template:
<UserControl.Template>
<ControlTemplate TargetType="UserControl">
<Border BorderBrush="#9B000000" BorderThickness="1" Margin="0,0,0,0" Padding="0">
<Grid Margin="0" Name="outerGrid">
...
<!-- Content -->
<ContentPresenter Name="MainContent" Grid.Row="1" Grid.Column="0"
Content="{TemplateBinding Content}" />
</Grid>
</Border>
</ControlTemplate>
</UserControl.Template>
pay attention to one important change:
Content="{TemplateBinding Content}"
ContentPresenter uses template binding to get and display custom content
I have the following example:
<Window x:Class="WpfOverlayTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="400" Width="600">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Width="600" Height="200" Background="LightBlue">
<Grid Margin="0,125,0,0" Height="75" Width="200" Background="Red">
<Grid Margin="0,75,0,0" Background="Black" Height="20" Width="200" />
</Grid>
</Grid>
<Grid Grid.Row="1" Height="200" Width="600" Background="LightGreen" />
</Grid>
How can I make the Black Grid being displayed?
edit:
To make the Problem a bit more clear:
I Want to define the Black Grid inside the Red Grid, but it should be displayed over the Green Grid.
See the Red Grid as a UserControl and the Black Grid as a Menu Overlay.
Sometimes I see questions and answers here that I just can't believe. If you want to put two or more elements into one Grid.Row or Column, then just set their Grid.Row values to the same value. The lower the element is defined in the XAML, the further in front the element will be in the UI. So to add the black Grid on top of the green Grid, you can just do this:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Width="600" Height="200" Background="LightBlue">
<Grid Margin="0,125,0,0" Height="75" Width="200" Background="Red">
</Grid>
</Grid>
<Grid Grid.Row="1" Height="200" Width="600" Background="LightGreen" />
<Grid Grid.Row="1" Background="Black" VerticalAlignment="Center"
Height="20" Width="200" /> <!-- This will be on top -->
</Grid>
UPDATE
It's pretty difficult to work out what you actually want, but after reading the comments, it seems as though you might want this instead:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Width="600" Height="200" Background="LightBlue">
<Grid Margin="0,125,0,0" Height="75" Width="200" Background="Red">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="Black" VerticalAlignment="Center" Height="20" Width="200" />
</Grid>
</Grid>
<Grid Grid.Row="1" Height="200" Width="600" Background="LightGreen" />
</Grid>
This is basic Grid stuff. I recommend the material in the Grid Class page on MSDN.
UPDATE 2
Now that you have provided a description of your problem in your question, I can finally provide the correct XAML for your requirements:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Width="600" Height="200" Background="LightBlue" />
<Grid Grid.Row="1" Height="200" Width="600" Background="LightGreen" />
<Grid Grid.Row="1" VerticalAlignment="Center" Height="75" Width="200" Background="Red">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<!-- This will be on top -->
<Grid Grid.Row="0" Background="Black" VerticalAlignment="Center" Height="20" Width="200" />
</Grid>
</Grid>
Set a RowDefinition on your Red grid and assign the Black Grid to it
<Canvas>
<Grid Width="600" Height="200" Background="LightBlue">
</Grid>
<Grid Margin="0,200,0,0" Height="175" Width="600" Background="LightGreen" />
<Grid Margin="200,125,0,0" Height="100" Width="200" Background="Red">
<Grid Margin="0,75,0,0" Background="Black" Height="20" Width="200" />
</Grid>
</Canvas>
EDIT: Added a screenshot
EDIT: Switched to a Canvas
There are known problems for setting up caliburn binding in DataTemplates.
In this answer EisenbergEffect suggests extracting Data Templates into a user control.
How can this be achieved?
In my user control I have lots of DataTemplates and ran into those problems. Conventions are not applied and I have to use "classical" Binding.
I could only imagine to extract the whole control with the DataTemplate, this would give me lots of smaller controls, but I see no way to only extract the DataTemplate.
Here is an example XAML
<Grid>
<Grid.Resources />
<Grid.RowDefinitions>
<RowDefinition Height="10*" />
<RowDefinition Height="2*" />
<RowDefinition Height="1*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*" />
</Grid.ColumnDefinitions>
<Border HorizontalAlignment="Stretch"
BorderBrush="Transparent"
BorderThickness="0">
<ScrollViewer HorizontalContentAlignment="Stretch"
Background="Yellow"
BorderBrush="Transparent"
BorderThickness="0"
CanContentScroll="True"
HorizontalScrollBarVisibility="Auto"
VerticalScrollBarVisibility="Auto">
<!-- Conventions work here -->
<ListView x:Name="Computers"
HorizontalContentAlignment="Stretch"
Background="Red"
BorderThickness="0">
<ListView.ItemTemplate>
<DataTemplate>
<Border Background="Transparent"
BorderBrush="Transparent"
BorderThickness="0">
<ListView HorizontalContentAlignment="Stretch"
Background="Black"
ItemsSource="{Binding HardwareComponents}"> <!-- Conventions to not work here -->
<ListView.ItemTemplate>
<DataTemplate>
<Border Background="Aquamarine"
BorderBrush="DarkGray"
BorderThickness="1">
<Grid Background="Transparent" cal:Message.Attach="[Event MouseDown] = [Action Expand($dataContext)]" >
<Grid.RowDefinitions>
<RowDefinition Height="20" />
</Grid.RowDefinitions>
<Border BorderBrush="Red" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<!-- Even more DataTemplates come here -->
</Border>
</Grid>
</Border>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Border>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollViewer>
</Border>
</Grid>
I'm trying to make a WPF DataGrid show scrollbars when necessary.
You can see the basic XAML code of my user control below:
<Grid x:Name="Data" Grid.Column="0" VerticalAlignment="Stretch" Height="Auto" HorizontalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Expander Header="Route Setup" Grid.Row="0" VerticalAlignment="Top" Background="White">
</Expander>
<Expander Header="Select Locations" Grid.Row="1" VerticalAlignment="Top" Background="White">
</Expander>
<DataGrid Grid.Row="2" ItemsSource="{Binding Locations, Mode=TwoWay}" Height="Auto" AutoGenerateColumns="False" ScrollViewer.CanContentScroll="True"
ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Auto">
</DataGrid>
This isn't working, I don't see any scroolbars when the DataGrid grows beyond the available space. I've already tried to use a scrollview around my DataGrid but that doesn't change anything.
Update
It might be important to know that the usercontrol is loaded into the LeftRegion of a shell that has the following markup:
<Grid x:Name="LayoutRoot">
<Grid.ColumnDefinitions >
<ColumnDefinition Width="*" MinWidth="400" MaxWidth="600"/>
<ColumnDefinition Width="9" />
<ColumnDefinition Width="*" MinWidth="300" />
</Grid.ColumnDefinitions>
<GridSplitter x:Name="MainSplitter" HorizontalAlignment="Stretch"
VerticalAlignment="Stretch" Grid.Column="1"
Margin="0" Width="9" Style="{DynamicResource gridSplitterVerticalStyle}"/>
<ItemsControl Name="LeftRegion" Grid.Column="0" Background="Azure" Height="Auto" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" cal:RegionManager.RegionName="LeftRegion">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
<ItemsControl Name="RightRegion" Height="Auto" Background="DarkGreen" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" Grid.Column="2" cal:RegionManager.RegionName="RightRegion">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</Grid>
Best Regards
Jay
In your grid named "Data", remove the Height="Auto" from the third RowDefinition. At least one row must have the "*" height (which is the default) to take the remaining available space.
Solved it. I needed to remove Height="Auto" from the thrird RowDefinition.
I am trying to access a Grid inside the DataTemplate while the ItemsControl is binded by ItemsSource.
this is the full XMAL code, How do i find a certain element from outside?
for (int i = 0; i < allViewControl.Items.Count; i++)
{
var container = allViewControl.ItemContainerGenerator.ContainerFromItem(allViewControl.Items[i]) as FrameworkElement;
var grid = allViewControl.ItemTemplate.FindName("grid", container) as DataGrid;
}
i found this always returning null ?
<ScrollViewer Grid.Row="0" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto">
<ItemsControl x:Name="allViewControl" Focusable="False" HorizontalContentAlignment="Center"
Grid.IsSharedSizeScope="true" ItemsSource="{Binding AllClassCharacters}"
ItemTemplate="{StaticResource CharacterViewModelTemplate}" >
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Extensions:AnimatedWrapPanel IsItemsHost="true" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</ScrollViewer>
<DataTemplate x:Key="CharacterViewModelTemplate" DataType="{x:Type ViewModel:CharacterViewModel}">
<Grid x:Name="grid" Width="200" Height="Auto" MinHeight="115" Margin="1" MinWidth="130" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" RenderTransformOrigin="0.5,0.5" Background="#66000000" >
<Grid.RowDefinitions>
<RowDefinition Height="70"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<ProgressBar x:Name="playerProgressBar" VerticalAlignment="Top" Background="Transparent" Height="5" Width="Auto" Value="0" Visibility="Collapsed" Grid.Column="0" Grid.Row="0" Grid.ColumnSpan ="2" Grid.RowSpan="2" Foreground="White" BorderThickness="0" Style="{DynamicResource ProgressBarStyle1}" />
</Grid>
Short answer is that you shouldn't need to do this - using MVVM should give you simpler solutions to whatever you're trying to achieve.
If you need it for some niche cases like setting the focus, search for 'find control wpf' on so - there are some existing questions (example) to hack and get controls out of the WPF UI Tree