I am using Silverlight 4 for a project. I want to know if there is a way I can get the main canvas to stretch to the height and width of the browser window it is hosted in?
I want the controls within to resize in proportion to the main control that hosts all the rest of the controls in the host browser window.
This is a Prism application which has a Shell.xaml and a ContentControl within the shell.
In this prism case I want the content control to span to 100% of the screen height and width.. and when a Page.xaml loads within it I want the Page's usercontrol to fill up the entire content control of the xaml. Similarly, within the Page.xaml if I have a grid I want the grid to grow to a size no more than a fixed number of pixels
The Grid within the Page.xaml's user control seems to be sizing properly. I am having trouble getting the root user control of the Page.xaml to stretch to the entire width of the browser window. Is there a way this can be done using xaml properties only? I dont want to specify the height and width to 800 and 1200 like I have done below.
This is my code
<UserControl x:Class="MyNamespace.MyClass"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
Background="#FF2D8543"
Height="800" Width="1200"
>
<Grid x:Name="LayoutRoot" Background="#FFEB0A0A"
VerticalAlignment="Center" HorizontalAlignment="Center"
Height="Auto" Width="Auto"
>
</Grid>
Thanks for your time.
Yes, use Grid instead of Canvas as top level element. Grid takes all the available space by default.
Learn more about Silverlight layout system here and here.
Update:
Just remove Width and Height attributes from the UserControl:
Height="800" Width="1200"
By setting those explicitly you are giving the control fixed size. If you don't specify Width and Height the control will take all the available space.
Related
According to the Microsoft documentation, it states the following for the Two Pane View:
By default, Pane1Length is set to Auto and it sizes itself to fit its content. Pane2Length is set to * and it uses all the remaining space.
With the following code, I don't see that defualt behavior being applied. Am I missing some extra properties I need to explicitly set? My end goal is simply for Pane1 to always show on a Single screen device, and hide Pane2.
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<muxc:TwoPaneView x:Name="MyTwoPaneView">
<muxc:TwoPaneView.Pane1>
<Grid x:Name="Pane1Root"
Background="Orange">
</Grid>
</muxc:TwoPaneView.Pane1>
<muxc:TwoPaneView.Pane2>
<Grid x:Name="Pane2Root"
Background="Green">
</Grid>
</muxc:TwoPaneView.Pane2>
</muxc:TwoPaneView>
</Grid>
Fixed. Since Pane1 has no content or min width, Auto sizing gives it 0px of width in wide mode. Setting MinWidth will find that it appears when the window is wide enough.
I am trying to get a RichEditBox to take over the entire width of the app window and to be responsive to window resizing, so far the code I have is the following:
<RichEditBox HorizontalAlignment="Stretch"
TextWrapping="WrapWholeWords"
Height="250"
Name="Intro"/>
What I am getting from the code above is this:
Any ideas on how can I get this to work? Why is it that I tell the text to wrap and it doesn't follow?
UPDATE
I also tried this:
<RichEditBox HorizontalAlignment="Stretch"
Height="250"
Name="Intro"/>
But the result is:
The problem that I am having is that it seems that HorizontalAlignment="Stretch" does not really do anything. The only way I am able to set a decent width is by hard-coding it, for example: Width="600". But if I do this my UI will not respond correctly to resizing. I also tried HorizontalContentAlingment="Stretch" but the result is exactly the same.
How can I get my RichEditBox take up all the available Width and Wrap at the same time?
If you look at the documentation of RichEditBox.TextWrapping, you'll notice that WrapWholeWords is invalid. You have to use
<RichEditBox TextWrapping="Wrap"/>
-or-
<RichEditBox TextWrapping="NoWrap"/>
Since Wrap is the default value, you can drop the property.
<RichEditBox HorizontalAlignment="Stretch"
Height="250"
Name="Intro"/>
Edit: in reply to the updated question:
A control only takes the width of it's parent control. Some container controls (e.g. Grid) automatically take the full width available, while others (e.g. StackPanel) only take the required size of it's children. Using HorizontalAlignment="Stretch" in combination with a StackPanel as a parent control, will only use the MinWidth property instead of the full available width on your screen. Sometimes you can't directly see this issue, e.g. when your control is inside an itemtemplate of a ListView. Use the Live Visual Tree in Visual Studio to find the parent containers and locate the issue.
So in short: make sure your RichEditBox is inside a Grid (or similar control) instead of a StackPanel.
My problem is that I have class library where some user control is defined. I have several projects that use this library. In one of these projects I need to change layout of control. Is it possible to redefine Xaml file in Application project to change layout of the user control ?
May I suggest that you are approaching this problem with the wrong solution? First, I acknowledge that what you are wanting is technically possible. In fact, you could generate your XAML at runtime if you wanted - and make it endlessly dynamic. But that's so complicated when the solution could be so simple.
Visual States
A visual state lets you define the layout of a control or group of controls. Then, it let's you define another layout of a control or group of controls. And, then, again. When your control should look one way for Landscape, you change the state. When your control should look one way for Portrait, you change the state. And, when your control should look a totally different way for a certain app that is consuming it, you just switch the state.
This solution gives you the full design-time support provided through the XAML tooling. It is also aligned with the way XAML was intended to be used. And, it's the simplest. I think it is, at least.
Read this: http://blog.jerrynixon.com/2013/11/windows-81-how-to-use-visual-states-in.html
You just need to set the Width and the Height of the root element(layout) of the UserControl to Auto in its Xaml File, then, you can edit its height and width from your application project as you desire.
Here's a thread about how to set the size of the user control in DesignTime, this may clarify things to you as well.
http://lfhck.com/question/157908/wpf-usercontrol-design-time-size
You can achieve that by naming your controls/elements than accessing them from the application project, this example is in WPF but it would be the same in WinRT:
MainWindow.Xaml :
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:wpfApplication1="clr-namespace:WpfApplication1"
Title="MainWindow" Height="350" Width="525">
<Grid>
<wpfApplication1:UserControl1 x:Name="UserControl1"></wpfApplication1:UserControl1>
</Grid>
</Window>
UserControl.Xaml :
<UserControl x:Class="WpfApplication1.UserControl1"
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"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid x:Name="MainGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Button x:Name="button">button in user control</Button>
</Grid>
</UserControl>
MainWindow.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Grid.SetColumn(UserControl1.button,1);
}
}
When you run this example the button will figure in the second collumn of the MainGrid.
Notice that I'm changing the layout from CodeBehind, if you still want to make changes directly from Xaml in the Application Project, you should create Properties
in the UserControl and make some binding stuff.
I set a background image to my Gird, and it displays correct in the designer, but when I run the app, the image doesn't appear, the background is black, anyone has any ideas? Below is my code.
<Page.Resources>
<ImageBrush x:Key="BackgroundImage" ImageSource="People/Images/Background.jpg"/>
</Page.Resources>
<Grid Background="{StaticResource BackgroundImage}">
</Grid>
I had the same problem. As Jim suggests, you need to have the correct absolute path.
I originally had:
Assets\Quizzes\image.png
It displayed fine in the designer but not at runtime. I switched it to:
ms-appx:///Assets/Quizzes/image.png
Now it displays correctly in the designer and runtime.
So I have a grid with a background. Inside the grid is a WebView and then some space on the left hand side of the screen where I have just placed a Button for now.
As the program runs, the left hand bar (that shows the grid with the background and the button laid out on it) doesn't render, instead I get the background, no controls on it and a black triangle (or geometric shape) at the bottom.
I suspect it's an issue with the VM and the video driver. I had a similiar issue with WPF a few years ago and MS's response was that I had an incompatible video driver that was causing the form to not render correctly at all times (this is very much the same behavior).
What can I do to prevent this? I'm including an image.
I'm going to include the small XAML I used and then a screenshot of the behavior (The XAML I rekeyed by hand):
<Grid>
<Grid.Background>
<ImageBrush ImageSource="Media/Background.jpg" />
</Grid.Background>
<TextBlock FontSize="24" Margin="15,15,0,0">Sample Label</TextBlock>
<WebView x:Name="wv1" Margin="250,0,0,0"></WebView>
<Button Content="Do Something" HorizontalAlignment="Left" Height="42" Margin="57,131,0,0" VerticalAlignment="Top" Width="170" Click="Button_Click1" />
</Grid>
VMs don't work well with multimedia. You should expect all sorts of problems with video.