Whenever Expander is expanded I would like to shrink grid cell above containing ListBox, so that you can always access every ListItem(if the listbox's grid cell would not shrink, lowest part would be inacessible). To illustrate:
item item *scrollbar*
item -> item *scrollbar*
item expanderItems
expander expander
I found bunch of threads for resizable expander, but none mentioning resizing other content. The problem is, grid containing listbox in 1st row and expander in 2nd with 2nd row Height set to Auto do not resize itself when expander is expanded.
<Grid.RowDefinitions>
<RowDefinition Height="1*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
I managed to code an ugly workaround using Expanded/Collapsed events:
private void Expander_Expanded(object sender, System.Windows.RoutedEventArgs e)
{
//grid1.Height is named content of expander
this.LayoutRoot.RowDefinitions[1].Height = new GridLength(this.LayoutRoot.RowDefinitions[1].ActualHeight + grid1.Height, GridUnitType.Pixel);
this.LayoutRoot.RowDefinitions[0].Height = new GridLength(1, GridUnitType.Star);
}
What would be the proper way? Preferably with no code behind and more "automated".
EDIT: xaml
<Grid x:Name="LayoutRoot">
<Grid.RowDefinitions>
<RowDefinition Height="1*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Expander Header="Expander" Margin="0" Grid.Row="1" VerticalAlignment="Bottom" Height="23" Panel.ZIndex="1" ExpandDirection="Up" Grid.RowSpan="2" Expanded="Expander_Expanded" Collapsed="Expander_Collapsed">
<Grid x:Name="grid1" Background="#FF762CF7" Height="100" Margin="0,-100,0,0"/>
</Expander>
<ListBox Margin="0" Background="#19FFFFFF">
<Button Height="150" Width="100"/>
<Button Height="150" Width="100"/>
<Button Height="150" Width="100"/>
</ListBox>
<Grid Margin="0" Grid.Row="1" Background="#FFAEFFAE"/>
<Grid Margin="0" Background="#FFFFD8D8"/>
</Grid>
The main problem you have is setting the Height property of the Expander. It changes its height when you expand it. But if you are setting it, it has to respect the height you gave it and cannot properly expand.
Instead of setting the Height, I would set the MinHeight (or completely remove height constraints, depending on what you want to do).
Additionally you should remove the Margin of the grid inside the expander.
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've been trying to have one canvas with two layers. One layer scrolls horizontally, the second one is on top and scrolls vertically.
In the second layer (the one that scrolls vertically), I stacked a transparent grid (or panel) and a panel with information so that we can see the first layer that is under this one and if we scroll up, we have the information that appears on the screen.
That works like a charm except that if I scroll horizontally, the first layer (the one under) does not scroll at all. It's not a problem if the vertical scrolls does not scroll if we swipe the transparent grid.
This is my xaml
<Canvas x:Name="Canvas">
<local:MyPage x:Name="PageContainer"/> <!--This one scrolls horizontally -->
<ScrollViewer
HorizontalScrollBarVisibility="Disabled"
VerticalScrollBarVisibility="Hidden"
Height="{Binding ActualHeight, ElementName=UcRoot}">
<!--This one scrolls vertically and appears on top -->
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid Height="600" Width="600" Grid.Row="0" x:Name="TransparentGrid" ></Grid>
<Grid x:Name="Information" Background="Azure" Height="1200" Width="600" Grid.Row="1">
</Grid>
</Grid>
</ScrollViewer>
</Canvas>
I tried many things on the transparent grid (setting width to 1, removing it and setting the information grid margin top to 1200 for example) but the grid captures the event and does not relay to my page.
Can I get some help?
Thanks!
You have to set the background to 'Transparent' to the grid in order to be able to tap on it and swipe.. and you maybe need these properties to play with:
ScrollViewer.VerticalScrollMode
ScrollViewer.HorizontalScrollMode
Although, this is my suggested solutions:
<ScrollViewer ScrollViewer.VerticalScrollMode="Enabled" ScrollViewer.HorizontalScrollMode="Disabled" >
<Grid >
<TextBlock Text="contnet" />
</Grid>
</ScrollViewer>
<ScrollViewer ScrollViewer.VerticalScrollMode="Disabled" ScrollViewer.HorizontalScrollMode="Enabled" >
<Grid Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid Height="600" Width="600" Grid.Row="0" x:Name="TransparentGrid" Background="Transparent" ></Grid>
<Grid x:Name="Information" Background="Azure" Height="1200" Width="600" Grid.Row="1"/>
</Grid>
</ScrollViewer>
</Canvas>
I am using a GridView to display some products.
When I set the DataTemplate I use Width and Height with static values and define some rows for the data I want to display.
<Grid Width="97" Height="180"">
<Grid.RowDefinitions>
<RowDefinition Height="80"/>
<RowDefinition Height="20"/>
<RowDefinition Height="*"/>
The first row is for a 80x80 image and the second for the price.So far, so good.
Then I face the problem that even if the data shown (with the name of the product) in the last row, with a TextBlock, is just one line, the GridViewItem takes the value defined from the height property.
Is there a way for the height to adjust on TextBlock's Text. I tried setting Height to Auto, not including at all for the Grid and the TextBlock but then the text is not appearing whole on the screen.
I have a feeling what you want is the text to wrap around. You can achieve this by setting the text to wrap, like in the code demonstrated below:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="80"/>
<RowDefinition Height="20"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="Red" />
<Grid Grid.Row="1" Background="Blue" />
<TextBlock Grid.Row="2" TextWrapping="Wrap" Text="This is some text which will not fall off the edge because it is set to wrap around, and will continue filling down until the end of the screen because the grid is set to auto" />
</Grid>
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 am developing a WPF application. In that i have a Grid which has two rows. One row consist of datagrid and other row has some TextBlock to display the detailed view of selected item in DataGrid.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Name="datagrid" Height="8*"></RowDefinition>
<RowDefinition Name="detailedview" Height="2*"></RowDefinition>
</Grid.RowDefinitions>
<my:DataGrid
Grid.Row="0"
x:Name="dataGrid1"
Width="auto"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
AutoGenerateColumns="False" CanUserAddRows="True" Margin="0,0,0,0">
<Grid Grid.Row="2">
<!- Detailed View->
</Grid>
</Grid>
Problem is , I am assigning the ItemSource of the Datagrid to an IEnumerable collection in my code behind.
Row size of the Grid should have the size equal to the number of rows in the datagrid exactly.
Remaining space should be occupied by Detailed view.
When 2 or more rows are added. the height of the row which is having datagrid should expand as such it should accomadate exactly 2 rows and size of detailed view should decrease relatively.
How can I acheive it without harcoding it into 8* and 2*.?
For the datagrid row set Height to Auto and for the deatiled row set height to * as shown below.
<RowDefinition Name="datagrid" Height="Auto"></RowDefinition>
<RowDefinition Name="detailedview" Height="*"></RowDefinition>
Since the datagrid row height is Auto, set the MinHeight property of the Datagrid to some value so that the datagrid occupies more screen space even if there are no records to display. Below I have set the MinHeight to 80.
<my:DataGrid
MinHeight="80"
Grid.Row="0"
x:Name="dataGrid1"
Width="auto"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
AutoGenerateColumns="False" CanUserAddRows="True" Margin="0,0,0,0">
You may also want to set a minimum height to the TextBlock so that it doesn't completely shrink when there are more rows in the datagrid.
You can put you DataGrid into ScrollViewer. Try next markup:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="40"/>
</Grid.RowDefinitions>
<ScrollViewer Grid.Row="0">
<my:DataGrid ... />
</ScrollViewer>
<TextBlock Height="40" Grid.Row="1" />
</Grid>