I have a StackPanel control in my WPF project, and it is in column 0 row 2 of a Grid. How can I autofit the StackPanel size to the size of that grid cell? Setting the StackPanel width and height to "auto" will just size it to its contents. I could explicitly set its width and height to numerical values, but I was wondering if there was a cleaner, more accurate way. Thank you.
Relevant XAML:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="74*"/>
<RowDefinition Height="74*"/>
<RowDefinition Height="421*"/>
</Grid.RowDefinitions>
<Label Content="{StaticResource LoginWindow_Title}" Style="{StaticResource TitleH1}" Grid.ColumnSpan="2"/>
<Label Content="{StaticResource LoginWindow_Subtitle}" Style="{StaticResource TitleH2}" Grid.Row="1" Grid.ColumnSpan="2"/>
<Border BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Center" Grid.Row="2" VerticalAlignment="Top">
<StackPanel HorizontalAlignment="Left" Grid.Row="2" VerticalAlignment="Top">
<Label Content="Log in"/>
</StackPanel>
</Border>
</Grid>
Your StackPanel is not in Grid, it`s inside Border. So for it to take all available space you can set horizontal and vertical alignment to Stretch both for it and its parent Border:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="74*"/>
<RowDefinition Height="74*"/>
<RowDefinition Height="421*"/>
</Grid.RowDefinitions>
<Border HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
BorderBrush="Black" BorderThickness="1" Grid.Row="2">
<StackPanel VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
<Label Content="Log in"/>
</StackPanel>
</Border>
</Grid>
Even so, like others mentioned, some other panel almost definetely will be better in this case.
The answer is always the same... don't use a StackPanel for layout purposes. They are primarily used to arrange UI elements that are very unlikely to change size. Even if you resized the StackPanel to the correct size, it would not help because a StackPanel does not rearrange or resize it's content items. If you want this functionality, you'll have to use one of the other Panel controls like a Grid instead.
<Grid>
<Border>
<StackPanel VerticalAlignment="Center" ...
Related
This question already has answers here:
How do I make a WPF data template fill the entire width of the listbox?
(8 answers)
Closed 1 year ago.
I have a problem with my first ListView usage. My custom item should have (currently) 2 rows with 3 columns each containing a label (1st column width="Auto"), a textbox (fill-up 2nd column (tested with="" or width="100") and a button in the 3rd column (width="Auto")
Unfortunately the second column does not scale to use full Listview width but behaves like width="Auto".
Note that initially I used a StackPanel as top control in the DataTemplate and replaced it by a grid, just to check if it could solve the problem.
Testing the DataTemplate Grid in a test application directely in a window dows work as expected.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Label Content="Input Paths"/>
<ListView Grid.Row="1" ItemsSource="{Binding PathListAccess.PathList.PathList}">
<ListView.ItemTemplate>
<DataTemplate>
<Grid>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<!--Row 0-->
<Label Grid.Row="0" Grid.Column="0" Content="Input Directory:"/>
<TextBox Grid.Row="0" Grid.Column="1" HorizontalAlignment="Stretch" Text="{Binding InputPath}"/>
<Button Grid.Row="0" Grid.Column="2" Content="..."/>
<!--Row 1-->
<Label Grid.Row="1" Grid.Column="0" Content="Output Directory:"/>
<TextBox Grid.Row="1" Grid.Column="1" HorizontalAlignment="Stretch" Text="{Binding OutputPath}"/>
</Grid>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
I think the problem is that the ListView default value for HorizontalContentAlignment is Left.
Try to set HorizontalContentAlignment to Stretch
<ListView Grid.Row="1" ItemsSource="{Binding PathListAccess.PathList.PathList}"
HorizontalContentAlignment="Stretch">
How can I tell a ComboBox to not influence the column width of the grid that it is in?
Here is a minimal example:
<StackPanel Orientation="Vertical">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="5"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Label>This is some text</Label>
<Label Grid.Row="1">This is some text</Label>
<GridSplitter Grid.Column="1" Grid.RowSpan="2" HorizontalAlignment="Stretch"/>
<Label Grid.Column="2" Background="Beige" HorizontalAlignment="Right">This is some text</Label>
<ComboBox Grid.Row="1" Grid.Column="2">
<ComboBoxItem IsSelected="True">This is some text</ComboBoxItem>
<ComboBoxItem>This is some really lengthy text that is really long</ComboBoxItem>
</ComboBox>
</Grid>
</StackPanel>
The ComboBox changes its size when the second item is selected, and together with it, the size of the third column is changed (as can be seen by the beige background of the label).
This also has the effect of the text in the beige label sometimes being outside of the visible area even though there is enough space to display it completely:
What I would want is that the third column always has the width of beige label (or any other element that is in the column and is not a ComboBox), and the ComboBox shortens its text so that it fits that width. The popup part of the ComboBox can be larger, I'm just talking about the button part here. I have tried setting up a ComboBox with TextBlock Content and TextTrimming set to CharacterEllipsis, but to no avail.
Here this should do it for you:
<StackPanel Orientation="Vertical">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="5"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Label>This is some text</Label>
<Label Grid.Row="1">This is some text</Label>
<GridSplitter Grid.Column="1" Grid.RowSpan="2" HorizontalAlignment="Stretch"/>
<Label x:Name="Label" Grid.Column="2" Background="Beige" HorizontalAlignment="Right">This is some text</Label>
<ComboBox Grid.Row="1" Grid.Column="2" Width="{Binding ElementName=Label, Path=ActualWidth, Mode=OneWay}">
<ComboBoxItem IsSelected="True">This is some text</ComboBoxItem>
<ComboBoxItem>This is some really lengthy text that is really long</ComboBoxItem>
</ComboBox>
</Grid>
</StackPanel>
Set MaxWidth of combobox control. It will allow combo box to expend to that value. If you want a fixed width then you need to set width property of combo box.
You can use the Width property of Combobox like
<ComboBox Grid.Row="1" Grid.Column="2" Width="200">
Also text wrapping may help you, following link has an example to how you can use text wrapping for combobox: ComboBox TextWrap Binding
Below is code for your reference
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="4*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<ComboBox HorizontalAlignment="Stretch" Grid.Column="1">
I'm trying to hide a column in a Grid with a GridSplitter when a button is clicked (the button sets the visibility of all items in the third column to collapsed). If I don't move the GridSplitter it works properly and the third column disappear, but if I move the GridSplitter the content disappear but the others columns don't resize to fill the empty space.
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition Height="25"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="a" Width="*"/>
<ColumnDefinition x:Name="b" Width="3"/>
<ColumnDefinition x:Name="c" Width="Auto" MaxWidth="600"/>
</Grid.ColumnDefinitions>
<Border Grid.Column="0" Grid.Row="0" HorizontalAlignment="Stretch" Background="Green">
<Image Source="te/Dante.png" Height="Auto" Margin="0,128,2,71"/>
</Border>
<Button Grid.Column="0" Grid.Row="0" Width="30" Height="30" Margin="0,10,10,0" HorizontalAlignment="Right" VerticalAlignment="Top" Click="Button_Click"></Button>
<GridSplitter Width="5" Grid.Column="1" Grid.Row="0" Grid.RowSpan="2" ResizeDirection="Columns" HorizontalAlignment="Left" Background="White" BorderBrush="Black" BorderThickness="1,0" ResizeBehavior="PreviousAndCurrent"/>
<WrapPanel x:Name="wpC" Grid.Column="2" Grid.Row="0" Grid.RowSpan="2" MinWidth="300" HorizontalAlignment="Stretch" Background="Aqua" Panel.ZIndex="-1"></WrapPanel>
</Grid>
Here is an example of my problem (gif):
How can i solve this problem? Possibly respecting MVVM pattern.
The problem is simple, you set GridSplitter ResizeBehavior="PreviousAndCurrent", but previous grid column width is * and as soon as you move splitter its width units will be changed to absolute (so it will not be able to resize when 3d column width is changed).
Simply set GridSplitter ResizeBehavior="PreviousAndNext" to solve the problem. If you do so the splitter will modify width of 3d column, but shouldn't touch first one anymore.
Btw, instead of using button and click event you can utilize ToggleButton (which IsChecked is bound to Visibility of container with content you want to hide), see this answer. Using converters with pure xaml view is better MVVM than the one with some code behind and x:Name.
Right, you have few layout problems, here is a complete solution:
<Window.Resources>
<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
</Window.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Border Background="Green" />
<ToggleButton x:Name="toggleButton"
Width="30"
Height="30"
Margin="0,10,10,0"
HorizontalAlignment="Right"
VerticalAlignment="Top" />
<Grid Grid.Column="1"
Visibility="{Binding IsChecked, ElementName=toggleButton, Converter={StaticResource BooleanToVisibilityConverter}}">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="300"
MinWidth="300"
MaxWidth="600" />
</Grid.ColumnDefinitions>
<GridSplitter Width="5"
ResizeBehavior="CurrentAndNext" />
<WrapPanel Grid.Column="1"
Background="Aqua" />
</Grid>
</Grid>
No need for code-behind, get converter from here.
Point are: 1) put splitter inside hide-able container 2) setup grid columns to have * and fixed width (splitter doesn't work well with auto columns).
Demo:
I have the following code:
<DockPanel>
<Grid>
<Grid.ColumnDefinitions>
<!--This will make any control in this column of grid take 1/10 of total width-->
<ColumnDefinition Width="1*" />
<!--This will make any control in this column of grid take 4/10 of total width-->
<ColumnDefinition Width="4*" />
<!--This will make any control in this column of grid take 4/10 of total width-->
<ColumnDefinition Width="4*" />
<!--This will make any control in this column of grid take 1/10 of total width-->
<ColumnDefinition Width="1*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
</Grid.RowDefinitions>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="0" Grid.Column="0">
<StackPanel>
<Image Source="/SAMPLE;component/Images/1_Left.png"/>
<Image Source="/SAMPLE;component/Images/2_Left.png"/>
<Image Source="/SAMPLE;component/Images/3_Left.png"/>
<Image Source="/SAMPLE;component/Images/4_Left.png"/>
</StackPanel>
</Border>
<ScrollViewer Grid.Row="0" Grid.Column="1">
<Canvas Name="Canvas1">
<Image Name="LeftImage"/>
<Image Name="LeftIcon"/>
</Canvas>
</ScrollViewer>
<ScrollViewer Grid.Row="0" Grid.Column="2">
<Canvas Name="Canvas2">
<Image Name="RightImage"/>
<Image Name="RightIcon"/>
</Canvas>
</ScrollViewer>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="0" Grid.Column="3">
<StackPanel>
<Image Source="/SAMPLE;component/Images/5_Right.png"/>
<Image Source="/SAMPLE;component/Images/6_Right.png"/>
<Image Source="/SAMPLE;component/Images/7_Right.png"/>
<Image Source="/SAMPLE;component/Images/8_Right.png"/>
</StackPanel>
</Border>
</Grid>
</DockPanel>
Even though the "LeftImage" and "RightImage" are having more width and height, the scroll bars are not working. I cannot able to scroll to view the complete image. Any help ?
Thanks
Grid does not support scrolling functionality. If you want to scroll something you need ScrollViewer control. So place your grid within a ScrollViewer insted of DockPanel
<ScrollViewer HorizontalScrollBarVisibility="Visible" VerticalScrollBarVisibility="Visible">
//Your grid
</ScrollViewer>
It looks simple, but it is unbelievable hard.
I want to have such layout:
It's ListView which should take a maximum height of buttons (number of visible buttons is dynamic).
I tried this
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
...
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<StackPanel>
<Button/>
<Button/>
...
</StackPanel>
<ListView Grid.Column="1"/>
</Grid>
</Grid>
Problem: ListView has a very weird behavior to size self to content. If I add many items, then suddenly it takes all window space.
Question: how to limit ListView height to not exceed buttons total height (StackPanel height)?
P.S.: mvvm, so pure xaml is preferable.
P.S.S.: I have feeling it will be a binding of something to something. But of what to what?
You just need to data bind the ActualHeight of your StackPanel to the ListView.Height so that the ListView won't grow larger than the Button's StackPanel:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<StackPanel Name="ButtonPanel" Grid.Column="0">
<Button Content="Click" />
<Button Content="Click" />
<Button Content="Click" />
</StackPanel>
<ListView Grid.Column="1" ItemsSource="{Binding Tests}"
Height="{Binding ActualHeight, ElementName=ButtonPanel}" />
</Grid>
</Grid>
You can bind the MaxHeight property of your lower content grid to the ActualHeight of the buttons StackPanel. Futher more, you need to set the VerticalAlignment of the buttons panel to Bottom.
This way, you can add more parts in vertically, but still stick to the buttons panel height.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
...
<Grid Grid.Row="1"
MaxHeight="{Binding ElementName=ButtonPanel, Path=ActualHeight}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<StackPanel Name="ButtonPanel"
VerticalAlignment="Bottom">
<Button Content="Button"/>
<Button Content="Button"/>
<Button Content="Button"/>
</StackPanel>
<ListView Grid.Column="1"/>
<!-- Multiple controls can be added here,
but the lower part will still stick
to the size of the buttons panel -->
</Grid>
</Grid>