I seem to not understand the layout behavior in my application. In the following sketch I have a TextBox that expands as text is being entered. How can I prevent that from happening and have the Height stay constant and get a Scrollbar instead? The size of the right TextBox should the size the left three TextBoxes take.
Initial state:
After adding several values:
Here's the XAML:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" Background="LightBlue">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBox Grid.Row="0" Grid.Column="0" Text="One" Margin="5" />
<TextBox Grid.Row="1" Grid.Column="0" Text="Two" Margin="5" />
<TextBox Grid.Row="2" Grid.Column="0" Text="Three" Margin="5" />
<TextBox
Grid.RowSpan="3" Grid.Column="1" Margin="5"
AcceptsReturn="True"
Text="Hello World!"
VerticalScrollBarVisibility="Auto"
/>
</Grid>
<Rectangle Grid.Row="1" Fill="Blue" />
</Grid>
Simple Answer
Assuming that the font size and margins of the TextBoxes are going to remain constant, and that the TextBoxes on the left are single-line only, you can just set a fixed height for the top RowDefinition:
<Grid.RowDefinitions>
<RowDefinition Height="84" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
Complicated Answer
If the left TextBoxes are multiline, or if the font size or margins can change, then you'll have to get a bit more complicated. I don't think there's an existing Panel that can handle that, you'd have to manually set the Height of the right TextBox to match the sum of the ActualHeight + Margin.Top + Margin.Bottom for all of the left TextBoxes. This would need to be done whenever SizeChanged was raised on any of the left TextBoxes.
I'm developing a resolution independent application in WPF. I am using mahapps metro controls in my application. I have a grid which is divided into rows and columns in * and 4 TextBoxes are occupying specific rows and columns in that grid.
The problem is that the TextBox is not occupying the row as in the bottom border of
Textbox is not visible but when I change style to x:Null the problem disappears. Is this a problem specific to metro TextBox?. I tried VerticalAlignment = "Stretch" but this does'nt help.
Also the bottom part is visible in higher resolution like 1440 X 900 but not in 1366 X 768. What am I missing?
<Grid Background="Azure">
<Grid.RowDefinitions>
<RowDefinition Height="13.1578*"/>
<RowDefinition Height="4.8157*"/>
<RowDefinition Height="13.1578*"/>
<RowDefinition Height="4.8157*"/>
<RowDefinition Height="13.1578*"/>
<RowDefinition Height="4.8157*"/>
<RowDefinition Height="13.1578*"/>
<RowDefinition Height="4.8157*"/>
<RowDefinition Height="13.1578*"/>
<RowDefinition Height="4.8157*"/>
<RowDefinition Height="18.4210*"/>
<RowDefinition Height="4.8157*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="5*"/>
<ColumnDefinition Width="90*"/>
<ColumnDefinition Width="5*"/>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0"
Grid.RowSpan="12"
Grid.Column="0"
Grid.ColumnSpan="3">
<Border BorderBrush="Black"
BorderThickness="1"/>
</Grid>
<TextBox x:Name="txt_1"
Controls:TextBoxHelper.Watermark="Textbox 1"
Style="{x:Null}"
Grid.Row="2"
Grid.Column="1"/>
<TextBox x:Name="txt_2"
Controls:TextBoxHelper.Watermark="Textbox 2"
Style="{x:Null}"
TextWrapping="Wrap"
Grid.Row="4"
Grid.Column="1"/>
<TextBox x:Name="txt_3"
Controls:TextBoxHelper.Watermark="Textbox 3"
Style="{x:Null}"
TextWrapping="Wrap"
Grid.Row="6"
Grid.Column="1"/>
<TextBox x:Name="txt_4"
Controls:TextBoxHelper.Watermark="Textbox 4"
VerticalAlignment="Stretch"
TextWrapping="Wrap"
Grid.Row="8"
Grid.Column="1"/>
<Grid Grid.Row="10"
Grid.Column="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="32.5*"/>
<ColumnDefinition Width="35*"/>
<ColumnDefinition Width="32.5*"/>
</Grid.ColumnDefinitions>
<Button x:Name="btn_add"
Content="Add"
Grid.Row="8"
Grid.Column="1"
Click="btn_add_Click"/>
</Grid>
<StackPanel Background="#C0F368"
Grid.Row="0"
Grid.Column="0"
Grid.ColumnSpan="3">
</Grid>`
I have a DockPanel, which contains some controls including a ScrollViewer.
What I WANT to happen, is for the ScrollViewer to allow the grid to be scrolled, without pushing other controls off the bottom of the form.
Instead, the ScrollViewer expands to the height of the window, rather than the top of the Button, pushing the Button off for the bottom of the form. Why is this? How do I fix it?
<Window x:Class="Class1.MainWindow"
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"
xmlns:local="clr-namespace:Class1"
mc:Ignorable="d"
Title="MainWindow" Height="800" Width="600"
WindowStartupLocation="CenterScreen">
<DockPanel LastChildFill="False">
<Menu DockPanel.Dock="Top">
<MenuItem Header="File">
<MenuItem Name="miQuit" Header="Quit" Click="miQuit_Click" />
</MenuItem>
</Menu>
<ToolBarTray DockPanel.Dock="Top" IsLocked="True">
<ToolBar>
<Button Name="btnQuit" ToolBar.OverflowMode="Never" Click="btnQuit_Click">
Quit
</Button>
</ToolBar>
</ToolBarTray>
<ScrollViewer VerticalScrollBarVisibility="Auto" DockPanel.Dock="Top" VerticalAlignment="Stretch">
<Grid Name="gMainGrid" ScrollViewer.CanContentScroll="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<TextBox Grid.Column="0" Grid.Row="0" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="1" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="2" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="3" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="4" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="5" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="6" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="7" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="8" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="9" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="10" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="11" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="12" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="13" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="14" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="15" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="16" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="17" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="18" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="19" Width="100" Margin="10,10,10,10"/>
<TextBox Grid.Column="0" Grid.Row="20" Width="100" Margin="10,10,10,10"/>
</Grid>
</ScrollViewer>
<Button Name="btnButton1" DockPanel.Dock="Bottom" Click="btnButton1_Click" >ButtonText</Button>
</DockPanel>
I want the menu bar at the top of the screen, the button at the bottom of the screen, and the grid with the ScrollViewer in the middle. What am I doing wrong?
The problem is that the ScrollViewer doesn't know how much height it should get. ScrollViewer is a control that tries to get as much size as its children need. DockPanel also gives as much size as the ScrollViewer need and therefore your problem. You can fix height of the ScrollViewer with pixels (i.e. Height=100) To make it a fixed height. I don't know your use case so this might be useful if you are showing an image carousel for example.
In more general layout advice I might say that you'd better use a grid instead of a DockPanel:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="auto" />
<RowDefinition Height="auto" />
<!-- Next one is for middle part of the page -->
<RowDefinition Height="*" />
<RowDefinition Height="auto" />
</Grid.RowDefinitions>
<!-- your controls here -->
</Grid>
I found that I could have a dynamic height with the DockPanel if I stuck the whole thing in a Grid. This appears to work, as I can now have a dynamic height for the ScrollViewer.
<Window x:Class="Class1.MainWindow"
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"
xmlns:local="clr-namespace:Class1"
mc:Ignorable="d"
Title="MainWindow" Height="800" Width="600"
WindowStartupLocation="CenterScreen">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<DockPanel Grid.Column="0" Grid.Row="0" LastChildFill="False">
Everything is then as normal EXCEPT that I move my button outside of the DockPanel and into the Grid's second row:
</DockPanel>
<Button Grid.Column="0" Grid.Row="1" Name="btnButton1" DockPanel.Dock="Bottom" Click="btnButton1_Click" >ButtonText</Button>
</Grid>
The rows with a Height of "Auto" will size to fit their content. The rows with a Height of asterisk (*) will size to fill the remaining space after the size of the Autos has been calculated. Thus everything sizes up correctly and nicely.
Alternatively, at this point I can do-away with the DockPanel entirely and have the Menu, ToolBarTray, ScrollViewer, and Button in their own separate grid rows, like Emad suggests in their answer (although I'm not sure what the extra row is for in their example).
<Grid.ColumnDefinitions>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
I ultimately decided to go for that approach, so I'll mark it as the answer, but I'm putting this all here for the full explanation, for completeness (in case people do happen to want to keep their DockPanel).
Like others I have a DataGrid that is not showing scrollbars. What I think is unique to my situation is that I do not see a StackPanel anywhere in the visual or logical tree. I am using WPF Inspector to view the trees. I have tried various suggestions to set the height and width of the containing Grid columns and rows with no success. I'm certain there is something I'm missing that is allowing the content to extend beyond the visible area but I cannot tell what it is yet. Any help would be appreciated. This application is a WPF Prism with MEF app and the DataGrid is within a UserControl which is in a Prism region.
Shell Window XAML:
<Window>
<Grid x:Name="GridOuterShell">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ribbon:Ribbon Grid.Row="0" >
...
</ribbon:Ribbon>
<Grid x:Name="GridShellContent" Grid.Row="1">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="Auto" />
<RowDefinition />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="350" MinWidth="300"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<local:RegionBorderControl Grid.Row="0" Grid.Column="0" Grid.RowSpan="3" Margin="2,2,8,2" RegionName="{Binding MainRegionDisplayName}"
Style="{DynamicResource RegionBorderControlStyle}">
<ContentControl prism:RegionManager.RegionName="MainRegion"
VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch"/>
</local:RegionBorderControl>
<GridSplitter Grid.Row="0" Grid.Column="1" Grid.RowSpan="3" HorizontalAlignment="Center" VerticalAlignment="Stretch"
Width="3" ShowsPreview="True" ResizeDirection="Columns" />
<local:RegionBorderControl Grid.Row="0" Grid.Column="2" RegionName="{Binding RightTopRegionDisplayName}"
Style="{DynamicResource RegionBorderControlStyle}">
<ContentControl prism:RegionManager.RegionName="RightTopRegion"
VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch"/>
</local:RegionBorderControl>
<GridSplitter Grid.Row="1" Grid.Column="3" HorizontalAlignment="Stretch" VerticalAlignment="Center"
Height="3" ShowsPreview="true" ResizeDirection="Rows" ResizeBehavior="PreviousAndNext" Background="Silver"/>
<local:RegionBorderControl Grid.Row="2" Grid.Column="2" RegionName="{Binding RightBottomRegionDisplayName}"
Style="{DynamicResource RegionBorderControlStyle}">
<ContentControl prism:RegionManager.RegionName="RightBottomRegion"/>
</local:RegionBorderControl>
</Grid>
<StatusBar Grid.Row="2">
...
</StatusBar>
</Grid>
</Window>
UserControl XAML:
<UserControl>
<Grid x:Name="GridMain">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition />
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<DockPanel Grid.Row="0" LastChildFill="False" HorizontalAlignment="Stretch" Width="Auto" >
<ToolBar x:Name="tbToolBar" DockPanel.Dock="Left" Background="{x:Null}">
...
</ToolBar>
</DockPanel>
<DataGrid AutoGenerateColumns="False" Grid.Row="2" Name="DataGridList" ItemsSource="{Binding MyItems}" IsReadOnly="True" CanUserResizeRows="False" SelectionMode="Single"
SelectedItem="{Binding Path=SelectedDataGridRecord, Mode=TwoWay}" Style="{StaticResource DataGridDefault}" >
<DataGrid.Columns>
...
</DataGrid.Columns>
</DataGrid>
</Grid>
You have the DataGrid in a Grid row where the RowDefinition Height is auto so the grid will be measured with an infinite height and be arranged to its DesiredSize.Height and never show scrollbars. Seems like the grid should be in row 1 or make the height of row 2 to be * instead of auto.
I have a Window with a Grid inside:
<Grid KeyboardNavigation.TabNavigation="Local">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" MinHeight="70" />
<RowDefinition Height="*" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
<ContentControl Grid.Row="0" Content="{Binding ChildViewModel.View}" />
<DockPanel Grid.Row="1" Visibility="{Binding SearchResultViewVisibility}">
<GridSplitter DockPanel.Dock="Top" Background="LightGray" Height="5" HorizontalAlignment="Stretch" VerticalAlignment="Top" IsTabStop="False"/>
<Views:SearchResultView DataContext="{Binding SearchResultViewModel}" />
</DockPanel>
<UserControls:GradientBackgroundControl Grid.Row="2" Height="25">
<Validators:FocusSummaryControl x:Name="FocusSummary" ValidateOnlyFocusedElement="False" />
</UserControls:GradientBackgroundControl>
</Grid>
The ContentControl gets a UserControl with this Grid set:
<Grid KeyboardNavigation.TabNavigation="Local">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="35" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="80" />
<ColumnDefinition Width="80" />
</Grid.ColumnDefinitions>
<ScrollViewer Grid.Row="0" Grid.ColumnSpan="4">
<StackPanel>
...
</StackPanel>
</ScrollViewer>
The problem now is, that the ScrollViewer in the UserControl doesn't scroll. The content of the UserControl set to the ContentControl is heigher and the overflow ist just hidden.
If I am not wrong, StackPanel requires a Height to be set for scroll functionality to work because StackPanel, by design, grows in one direction (based on Orientation).
To confirm whether this is the cause of your problem, please test by setting the height of StackPanel to a fixed height. Alternately, you may want to replace the StackPanel with say DockPanel and see the behaviour. Also there is a ScrollViewer.CanContentScroll property that you may want to fiddle with.
Let us know the result of this test.
I think you need to rearrange things a little bit. My suggestions (I'm sure there are infinite variations that would work):
First, add a new row to your grid (Height="Auto") and set the height of your top row (with your ContentControl in it) to "*"
<Grid.RowDefinitions>
<RowDefinition Height="*" MinHeight="70" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
Second, move your GridSplitter out of the DockPanel. Put the splitter in row 1 and the dockpanel in row 2.
<ContentControl Grid.Row="0" Content="{Binding ChildViewModel.View}" />
<GridSplitter Grid.Row="1" Background="LightGray" Height="5" HorizontalAlignment="Stretch" VerticalAlignment="Top" IsTabStop="False" ResizeBehavior="PreviousAndNext"/>
<DockPanel Grid.Row="2" Visibility="{Binding SearchResultViewVisibility}">
<Views:SearchResultView DataContext="{Binding SearchResultViewModel}" />
</DockPanel>
Note that you'll probably also have to set the ResizeBehavior for your GridSplitter as shown above. I hope this will get you close to what you want.