I have a listbox with dynamically added items which are custom user controls (PriceGroupControl).
I am trying to resize that custom user control based on the size of the parent, but it always has a fixed size not related to the size of the listboxitem as far as I can see and resizing just clips the control.
I am using a similar control in a grid and that resizes perfectly.
My page has a grid, the first row has a combobox, the second has the custom control that resizes and the third row has a scrollviewer with a listbox in it. Since the listbox items are quite large and dynamically added, I use the scrollviewer.
The reason why I use a listbox is that, because based on the selected item, the content of the custom control on the second row of the grid is updated.
In XAML:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="2*"/>
<RowDefinition Height="5*"/>
</Grid.RowDefinitions>
<StackPanel Margin="12" Grid.Row="0">
<ComboBox Name="comboBoxPriceGroups" ItemsSource="{Binding Groups}"
SelectedValuePath="GroupName"
Width="250" SelectionChanged="comboBoxPriceGroups_SelectionChanged">
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding GroupDescription}" />
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
</StackPanel>
<Frame x:Name="ModPriceFrame" NavigationUIVisibility="Hidden" Grid.Row="1" Margin="10"/>
<ScrollViewer Grid.Row="2" VerticalScrollBarVisibility="Auto">
<ListBox x:Name="PriceListBox" Margin="10" Background="{StaticResource BackgroundLightBrush}" BorderThickness="0" SelectionChanged="PriceList_SelectionChanged"/>
</ScrollViewer>
</Grid>
The way I bound my listbox content to the listbox is the following:
List<PriceGroupControl> priceGroupControls = new List<PriceGroupControl>();
foreach (GroupDetail detail in groupDetails)
{
priceGroupControls.Add(new PriceGroupControl(detail.GroupName, detail.GroupDetailDescription));
}
PriceListBox.ItemsSource = priceGroupControls;
I have tried the following:
listbox: width set to auto in XAML, width = double.NaN code behind
my custom control: horizontalAlignment = stretch, horizontalContentAlignment = stretch, width = double.NaN.
bind a list of listboxitems with each listboxitem having a pricegroupcontrol.
If I put an actual number e.g. 1000 as the minimum width of pricegroupcontrol, it sizes to this width and looks more normal (now everything is cramped together in the minimum space needed), but obviously doesn't resize with the screen.
I am fairly new to WPF, so maybe I am missing the obvious.
I have used the live visual tree to get an idea which part is causing the issue and this seems to indicate that it is the PriceGroupControl that is too small, while the listbox is the size of the screen.
Any help would be appreciated.
Related
I have a ListView in a Grid inside a MainWindow, and it has defined a DateTemplate inside of the ItemTemplate, which includes a TextBlock, each TextBlock has a different length of text, some are long, and some short.
The application needs to fit different screen resolutions, that is, the FontSize of each TextBlock needs to be autoscaled accordingly.
So I wrap the TextBlock with a ViewBox, but the problem is, the short text will get a bigger FontSize than the long text, I want all TextBlock's can share the same FontSize and can autoscale to fit different screen size and resolution, any idea?
My ListView is as below:
<ListView x:Name="specs" Margin="10 15 10 15" VerticalAlignment="Center"
ScrollViewer.HorizontalScrollBarVisibility="Disabled" Background="Transparent" BorderThickness="0">
<ListView.ItemTemplate>
<DataTemplate>
<Viewbox>
<TextBlock Text="{Binding}" TextWrapping="Wrap" FontFamily="Kaiti Regular"/>
</Viewbox>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
You can use a shared size group to force the textblocks all to have the same width as the widest one, which in turn will force the Viewboxes to scale identically.
The key things here are Grid.IsSharedSizeScope="True" on the ListView, and putting the content of the ViewBox in a grid column with SharedSizeGroup="SomeArbitraryString". Under a given parent that's a shared size scope, all the grid columns in a particular named shared size group will have the same width as the widest one (and the same for grid rows and height).
<ListView
x:Name="specs"
Margin="10 15 10 15"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ItemsSource="{Binding Words}"
Grid.IsSharedSizeScope="True"
>
<ListView.ItemTemplate>
<DataTemplate>
<Viewbox>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" SharedSizeGroup="Text" />
</Grid.ColumnDefinitions>
<TextBlock
Grid.Column="0"
Text="{Binding}"
TextWrapping="Wrap"
FontFamily="Kaiti Regular"
/>
</Grid>
</Viewbox>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
I'm not convinced this will resolve the entire issue, but it'll get you another step along. And in general, it's a wonderfully useful tool for DataTemplate layout in ItemsControls.
I have the following piece of XAML code in my WPF application,
<StackPanel DockPanel.Dock="Top" >
<TextBlock Style="{StaticResource HeaderTextBlock}">Import Log</TextBlock>
<ScrollViewer Height="400" VerticalScrollBarVisibility="Auto">
<TextBlock Name="ImportFeedBack"></TextBlock>
</ScrollViewer>
</StackPanel>
which dispalys the ImportFeedBack string (in case someone is wondering, I'm using Caliburn.Micro as MVVM framework, so that the content of the TextBlock is bound by naming convention to a property of same name in my ViewModel).
The value can vary heavily in length. I want it to use the whole available space (but it should not resize the application!), and only if that is not enough, add a vertical scroll bar.
If I delete the Height="400" in the ScrollViewer, it resizes the app for big strings, and if I leave it there, it (obviously) just uses 400 height, but ads he scroll bar when needed.
How can I get it to use all the available space, and only if that is not enough, to creata a vertical scroll bar?
Instead of StackPanel use different panel like Grid or DockPanel. In the example below second row will take all available space not allocated by first row and not expand beyond that which is when scroll bar should appear when text is longer.
<Grid DockPanel.Dock="Top" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Style="{StaticResource HeaderTextBlock}">Import Log</TextBlock>
<ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto">
<TextBlock Name="ImportFeedBack"></TextBlock>
</ScrollViewer>
</Grid>
I'm designing a imaging gallery with Scroll Viewer and Stack Panel in WPF like the following:
<ScrollViewer x:Name="ShopsScroll" Grid.Row="1" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden">
<StackPanel x:Name="stackPanel" Margin="0" Orientation="Horizontal" Height="Auto">
<Image Source="Images/1F/L1_angesb.jpg"/>
<Image Source="Images/1F/L1_chanel.jpg"/>
<Image Source="Images/1F/L1_dior.jpg"/>
<Image Source="Images/1F/L1_gucci.jpg"/>
<Image Source="Images/1F/L1_LV.jpg"/>
<Image Source="Images/1F/L1_nike.jpg"/>
</StackPanel>
Since the image is large in size, I would like to resize them to fit the height of the StackPanel. However, when I set the value of height in StackPanel as "Auto", it just used the height of the image, not its parent ScrollViewer. If I set a fix value to StackPanel, the problem seems being fixed, but I need to use my application in different size of screen in full screen. Thus, it should adapt different size but not hard code a fix value.
How I I do it?
You could use an element binding to bind the height of your images to the height of the StackPanel element. Sorry I can't test this code right now, but try something like
<Image Source="Images/1F/L1_nike.jpg" Height="{Binding ElementName=ShopsScroll, Path=Height}" />
See MSDN documentation on the Binding.ElementName property.
This property is useful when you want to bind to the property of another element in your application. For example, if you want to use a Slider to control the height of another control in your application, or if you want to bind the Content of your control to the SelectedValue property of your ListBox control.
Try to set HorizontalAlignment = "Stretch" and VerticalAlignment = "Stretch" for stackpanel
In my opinion better to have ItemsControl with images in it in your case
<ItemsControl HorizontalContentAlignment="Stretch">
<Image Source="Images/1F/L1_angesb.jpg"/>
<Image Source="Images/1F/L1_chanel.jpg"/>
<Image Source="Images/1F/L1_dior.jpg"/>
<Image Source="Images/1F/L1_gucci.jpg"/>
<Image Source="Images/1F/L1_LV.jpg"/>
<Image Source="Images/1F/L1_nike.jpg"/>
</ItemsControl>
Hope this helps
I don't know how this works technically but my requirement is as follows. I have a DataGrid and to input data into the DataGrid, I want a panel at the bottom of the DataGrid that slides out on a button click showing input options. Except, as the panel slides out, the DataGrid has to resize vertically as well. Can someone throw some light on how I can implement this?
You should be able to use a StackPanel with 2 children, your grid and your panel. Set the initial height of your panel to 0. Once the button is clicked, set the height to whatever you need it to be (e.g., MyPanel.Height = 20). You might want to wrap the grid in a ScrollViewer in case that is needed.
<StackPanel Orientation="Vertical">
<ScrollViewer Height="Auto" VerticalAlignment="Stretch">
<Grid Height="*" VerticalAlignment="Stretch" />
</ScrollViewer>
<ContentControl x:Name="MyPanel" Height="0" />
</StackPanel>
You might need to experiment with VerticalAlignment and Height="Auto" or Height="0" to get the layout you want.
You can use Expander. Please look at the following code snippet.
<DockPanel>
<Expander DockPanel.Dock="Bottom">
<StackPanel>
<TextBlock Height="25"></TextBlock>
<TextBlock Height="25"></TextBlock>
<TextBlock Height="25"></TextBlock>
</StackPanel>
</Expander>
<Border BorderBrush="LightGreen" BorderThickness="2">
<DataGrid/>
</Border>
</DockPanel >
I'm building a project that loads data from a webservice into a TreeView Control. When the TreeView is contained on the LayoutRoot grid by itself and it's height is set to Auto, if the contents extend beyond the vertical or horizontal limits of the treeview scrollbars appear automatically, as expected.
If that same TreeView control is placed inside a StackPanel, it's behavior changes. When data extends past it's limits, no scrollbar appears and data simply clips off the edge with no access to it. If I manually set the height of the TreeView in this scenario, the scrollbars will appear again as expected.
Clearly there seems to be some interaction between the StackPanel and TreeView that I'm not seeing.
Can anyone explain this and suggest an appropriate way to handle the situation?
Per request in comments:
The following XAML works fine and renders scrollbars as expected (notice the Height on the TreeView is Specified):
<StackPanel >
<controls:TreeView ItemTemplate="{StaticResource MainEntryIndexTemplate}"
x:Name="CodeBookIndexTreeView" Height="500" />
</StackPanel>
The following also displays scrollbars as expected (notice no StackPanel, but the TreeView's Height is set to Auto):
<controls:TreeView ItemTemplate="{StaticResource MainEntryIndexTemplate}"
x:Name="CodeBookIndexTreeView" Height="Auto" />
Finally, this code fails in that the TreeView will not display scrollbars and data scrolls off the bottom and/or right hand side of the control (notice the TreeView is in a StackPanel and the TreeView's Height is set to Auto):
<StackPanel >
<controls:TreeView ItemTemplate="{StaticResource MainEntryIndexTemplate}"
x:Name="CodeBookIndexTreeView" Height="Auto" />
</StackPanel>
Cheers,
Steve
Managed to get this one figured out with some help from the Silverlight.net forums. You can read the original question and answer here. It turns out that a StackPanel oriented vertically (the defaul orientation) will give infinite size to its children, so since the TreeView has infinite size, the scroll bars will never display. This does NOT happen when using a grid as your layout element.
The following XAML will render the TreeView scroll bars as expected. (Notice that the TreeView is contained in row 2 of a Grid, not a StackPanel and that the Height of the TreeView is set to Auto.) There are some additional controls in this code snippet because that was the reason for the extra container in the first place:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel Orientation="Horizontal" Grid.Row="0">
<TextBlock Text="Enter Search Term" />
<TextBox x:Name="SearchTermTextBox" Width="200" KeyUp="SearchTermTextBox_KeyUp"/>
</StackPanel>
<Button x:Name="SearchButton" Content="Search" Click="SearchButton_Click" Width="100"
HorizontalAlignment="Left" Grid.Row="1" />
<controls:TreeView ItemTemplate="{StaticResource MainEntryIndexTemplate}"
x:Name="CodeBookIndexTreeView" Height="Auto" Grid.Row="2" />
</Grid>
Yeh - StackPanels don't seem to be a great control for containing variable sized objects.
Similarly; I have had trouble with DataTemplates composed of textblocks within a stackpanel, used as ListItem templates within a ListBox. Intention was for the text block to wrap, but instead it just continues beyond the bounds of the list box, for which there is no horizontal scroll. Best I've managed so far was to fix the width of the Grid containing the stackpanels but not yet found a satisfactory solution.. would love to know if there is one!