I want my whole Page to be scalable, so I put my Grid into a Viewbox.
<Viewbox>
<Grid>
...
</Grid>
</Viewbox>
The Viewbox streches to the window's size but the problem is that the Grid does not.
Why is that happening?
You may want to experiment with Viewbox's Stretch property. Here is my sample:
<Viewbox Stretch="Fill">
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Button Content="Button1" Grid.Row="0"/>
<Button Content="Button2" Grid.Row="1"/>
<Button Content="Button3" Grid.Row="2"/>
</Grid>
</Viewbox>
This gives:
While a value of Uniform gives:
If you want a uniform fill you may want to wrap your Viewbox with a ScrollViewer, this gives a complete uniform fill and with the scroll viewer you can scroll to those parts that you may not see. Like the following picture:
... and resizing the window to make all controls visible...
Hope this helps!
Related
I created a WPF project in which I need display two StackPanels like this:
This screen is child of main Grid
StackPanel 1 will be displayed without any alternation of width and height and I need to display the entire second StackPanel on top of previous StackPanel. Using Canvas and DockPanel doesn't help me in this case.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel VerticalAlignment="Center" Grid.Row="0" x:Name="web1">
<wv2:WebView2 Name="MyWebView"
Height="800" >
</wv2:WebView2>
</StackPanel>
<StackPanel Grid.Row="0" x:Name="videoPlayerPanel">
<Canvas >
<local:VideoPlayer x:Name="videoPlayer" Background="AntiqueWhite"/>
</Canvas>
</StackPanel>
</Grid>
I agree with #thatguy answer , if we use the zIndex we can overlap the element in WPF, But the question here is related to webview2 and mediaElement.
As of now webview2 not allow another element to come on top.
So there is no way to display your mediaElement on top of webview as of now.
Reffer to this Link for this issue : Webview2 issue
You can try to display mediaElement using popup but this will give other problems
I think this is the only answer to your question right now .
The order in which you define the StackPanels inside the Grid matters. The next item is displayed above the previous one. In your example, videoPlayerPanel will be above web1, because it is defined after web1. There are two options to alter this behavior.
Change the order, define videoPlayerPanel before web1, to display web1 above videoPlayerPanel.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel Grid.Row="0" x:Name="videoPlayerPanel">
<Canvas >
<local:VideoPlayer x:Name="videoPlayer" Background="AntiqueWhite"/>
</Canvas>
</StackPanel>
<StackPanel VerticalAlignment="Center" Grid.Row="0" x:Name="web1">
<wv2:WebView2 Name="MyWebView"
Height="800" >
</wv2:WebView2>
</StackPanel>
</Grid>
Define the Z-Order explicitly by setting a ZIndex for the items.
Gets or sets a value that represents the order on the z-plane in which an element appears. [...] The greater the value of a given element, the more likely the element is to appear in the foreground.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel VerticalAlignment="Center" Grid.Row="0" x:Name="web1" ZIndex="1">
<wv2:WebView2 Name="MyWebView"
Height="800" >
</wv2:WebView2>
</StackPanel>
<StackPanel Grid.Row="0" x:Name="videoPlayerPanel">
<Canvas >
<local:VideoPlayer x:Name="videoPlayer" Background="AntiqueWhite"/>
</Canvas>
</StackPanel>
</Grid>
The default ZIndex is zero, and that explains why the order in the Grid matters.
Members of a Children collection that have equal ZIndex values are rendered in the order in which they appear in the visual tree. You can determine the index position of a child by iterating the members of the Children collection.
I have a ListView inside a Grid which in turn is inside an "overall ScrollViewer".
Users should be able to scroll across the entire page horizontally and then scroll vertically down several child list like elements. While I am able to scroll horizontally, placing the outer ScrollViewer around the page content breaks my ListViews
Here is a cut down version of my XAML setup:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid.RowDefinitions>
<RowDefinition Height="140" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<TextBlock x:Uid="Title" Text="Title"/>
<ScrollViewer Grid.Row="1" ZoomMode="Disabled"
VerticalScrollBarVisibility="Hidden"
HorizontalScrollBarVisibility="Auto"
VerticalScrollMode="Disabled"
HorizontalScrollMode="Enabled">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="380" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<!--My List-->
<ListView x:Name="MyList" Grid.Column="0" />
<Grid x:Name="AppointmentDetailView" Grid.Column="1">
<!--Some other stuff-->
</Grid>
</Grid>
</ScrollViewer>
</Grid>
If I set a fixed height on any parent of the ListView or the ListView itself the scrolling works as expected but fixing the height is undesirable for screens of varying sizes. I tried binding to the ActualHeight of the ListViews parents but no luck.
It seems like the ScrollViewers children are not constrained to the height available even when the ScrollViewer.VerticalScrollMode is disabled. Seems rather odd to me, I would have expected the ScrollViewer's layout logic to be similar to Grid in the direction it has been disabled.
Any help with this is appreciated, Thank you!
I found a workaround that involves wrapping my ScrollViewer in a Grid and binding to the outer Grids ActualHeightProperty on the child element of the ScrollViewer. its a bit of a hack but does what I need it to and goes something like this
<Grid x:Name="ScrollViewerContainer" ...>
<ScrollViewer VerticalScrollMode="Disabled" ...>
<!--Page Content-->
<Grid Height="{Binding ActualHeight, ElementName=ScrollViewerContainer}" ...>
....
Personally I feel like the ScrollViewer should not allow its children to determine its Width/Height when the scroll mode is disabled in a particular direction as it breaks nested ScrollViewer's. It should revert back to the available space. But hey, I'm not Microsoft..
I have two elements inside a Grid, the first one has a dynamic height and the second has a fixed height. When the user resizes the window the first element is supposed to grow bigger until the scrollbar does not show. Here's the code:
<Grid VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="40" />
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<ScrollViewer>
<!-- MORE STUFF HERE -->
</ScrollViewer>
</Grid>
<Button Grid.Row="1" Width="126" HorizontalAlignment="Left" VerticalAlignment="Top" />
</Grid>
And when it's small looks like this:
When it's big it looks like this:
How can I attached the Button the bottom of the first element, or make the first element stop growing after the content is displayed?
Set the Grid's VerticalAlignment to Top instead of Stretch:
<Grid VerticalAlignment="Top">
...
</Grid>
I have a number of buttons within a grid, that all change size based on the application being resized. Some buttons have child elements such as an ellipse or rectangle. I can't seem to get these to resize as well.
Here is some code:
<Grid DockPanel.Dock="Right" Width="121">
<Grid.RowDefinitions>
<RowDefinition Height="121*" />
<RowDefinition Height="121*" />
// Snip
</Grid.RowDefinitions>
<Button Name="ellipseButton" PreviewMouseDown="EllipseButtonClickedEvent" HorizontalAlignment="Stretch" Grid.Row="0">
<Ellipse Width="90" Height="90" Stroke="Black"></Ellipse>
</Button>
// Snip
</Grid>
I know that the height and width of the ellipse is explicitly set, but when I remove that, I can't seem to get the ellipse to show at all.
I would appreciate any advice.
Thanks.
Just set the HorizontalContentAlignment and VerticalContentAlignment properties of the button to Stretch:
<Button Name="ellipseButton" PreviewMouseDown="EllipseButtonClickedEvent" HorizontalAlignment="Stretch" Grid.Row="0"
HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" >
<Ellipse Stroke="Black" />
</Button>
I am working on a WPF control whose content is a grid. I am relatively new to WPF so I am wondering if the below is the right way to go about this.
I placed two labels in the grid, both in the same column but adjacent rows:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="UntitledProject8.Window1"
x:Name="Window"
Title="Window1"
Width="200" Height="200">
<Grid x:Name="LayoutRoot">
<Grid HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" Height="100"/>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Label Grid.Row="0" Content="1.23" FontSize="18" HorizontalAlignment="Center" VerticalAlignment="Bottom"/>
<Label Grid.Row="1" Content="45" FontSize="48" HorizontalAlignment="Center" VerticalAlignment="Top"/>
</Grid>
I set the labels' vertical alignment so that the label on row zero is aligned to the bottom and the label on row 1 is aligned to the top.
Now, this is close to what I want but I need the actual text of the label in row 1 to be closer to the text of label in row zero. To do this I set the margin of the label in row 1 to a negative value:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="UntitledProject8.Window1"
x:Name="Window"
Title="Window1"
Width="200" Height="200">
<Grid x:Name="LayoutRoot">
<Grid HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" Height="100"/>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Label Grid.Row="0" Content="1.23" FontSize="18" HorizontalAlignment="Center" VerticalAlignment="Bottom"/>
<Label Grid.Row="1" Content="45" FontSize="48" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,-20,0,0"/>
</Grid>
Is that the right way to do it? Granted that my examples above are simplistic but as the grid contents grow and get more complicated (such as including other layout containers) is setting different values for control margins the correct way to make adjacent cells closer or farther apart?
I am just a little concerned since I am trying my best to avoid hard coding any types of "designer" values like I did when working with WinForms (such as setting exact coords for location and values for sizes) and would like to let the layout manager just take care of it. However, it looks like setting the margin is the only way to go.
Thanks for the help :)
That looks good! The only thing I was caught a little off guard with was the -20 for the top margin (instead of 20 for the bottom which should do the same thing), but I would only change that for clarity.
The main thing to note is the container of choice, which Grid will definitely work for you. Another feature of this is that as you stretch the Grid, the distance between your elements will proportionally grow (probably what you want anyway). The only weakness of the Grid is that it's not the most efficient. Mainly because you can do so much with it.
You could accomplish the same thing as above with a canvas (with the stretching feature) or if you didn't want the distance to stretch you might try a stackpanel, which is also going to be more efficient than the Grid. There are a few other panels as well, but becoming acquainted with what they can do (and how well they perform) is really helpful, especially when having to create more complex layouts.
As for the Margin, yeah that, along with setting width and height, are standard ways of setting spacing.