I am having some problems with a menu that is displayed as tabs (displayed vertically on the left side)
I have defined a headertemplate that defines a grid consisting of two columns where the first holds a textblock with the text retrieved via binding. The second column holds an image whose visibility is tied to a property - this image is used by validation and shown when data entered in another view has been validated.
The problem I have is getting the columns to share the same width. Example:
Text1| Image
MuchLongerText| Image
This looks a bit wonky and so am trying to get the Images to line up but can't seem to do this. The HeaderTemplate has a datatemplate specified as below
<Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="Auto"/> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Text="{Binding Name}" HorizontalAlignment="Left" VerticalAlignment="Center"/>
<Image Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Center" Width="20" Height="20" x:Name="ValidationImage" Source="/Images/validationimage.bmp"/> </Grid>
I've tried putting it in a stackpanel and using sharedsize but no luck. Any help with this would be much appreciated!
Cheers
/Sakic21
Take a look at the Grid.IsSharedSizeScope and DefinitionBase.SharedSizeGroup properties.
Related
I am designing a Windows Phone application and I would like to stack a TextBlock and a Button next to each other horizontally. This is my pseudo-code on what I would like to achieve:
<StackPanel Name="titlePanel" Orientation="Horizontal" Margin="0,-6.5,0,26.5">
<TextBlock Name="titleBox" Text="{Binding Title}" Style="{ThemeResource HeaderTextBlockStyle}" CharacterSpacing="{ThemeResource PivotHeaderItemCharacterSpacing}"/>
<Button Content="press" Width="whatever space is left" Length="what the width is"/> <!--how do I do this?-->
</StackPanel>
I got an error when I tried to put Width="*", so I'm looking to do something like Width="titlePanel.Width - titleBox.Width" and Length="this.Width", only I can't seem to be able to reference other objects inside XAML. I don't want to put into the code-behind file to format the size of the Button every time that page comes up... how would this be achieved?
You can't do it with StackPanel because, the stack panel measures every child element with positive infinity as the constraint for the axis that it is stacking elements along. The child controls have to return how big they want to be (positive infinity is not a valid return from the MeasureOverride in either axis) so they return the smallest size where everything will fit. They have no way of knowing how much space they really have to fill.
So you should use grid to achieve desired behavior.
You can use grid control for this kind of purpose
try this one
<Grid HorizontalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Name="titleBox" Grid.Column="0" Margin="5,0" HorizontalAlignment="Stretch" TextWrapping="Wrap" Text="Your text goes here." />
<Button Content="press" Grid.Column="1" Margin="5,0" HorizontalAlignment="Stretch"/>
</Grid>
Hope this helps.
I have an ObservableCollection which contains ViewModel which in turns defines my buttons definitions.
I've been at it for hours, reading articles after articles but to no avail. I've tried using a Listbox and this is the closest I've got to. My buttons are getting build horizontally but assuming I'm displaying 3 buttons, I want one displayed on the left, one displayed in the middle and one displayed on the right.
<ListBox Grid.Row="2" ItemsSource="{Binding Links}">
<ListBox.ItemsPanel>
<ItemsPanelTemplate ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<StackPanel Background="Beige" Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<Button Grid.Column="{Binding Column}"
Grid.Row="0"
Width="90"
Height="90">
<ContentControl>
<StackPanel Orientation="Vertical">
<Image Source="{Binding Image}" Width="36" Height="36"
Margin="5" Stretch="UniformToFill"
HorizontalAlignment="Center"/>
<TextBlock Text="{Binding Description}"
Foreground="#0F558E"
FontSize="18"
HorizontalAlignment="Center"/>
</StackPanel>
</ContentControl>
</Button>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
As you can see, I set the column dynamically using a property from my ViewModel but I no longer have a grid as I couldn't get it to work, but ideally I'd like to use a grid so that I can specify in which Column to set the button.
When I use a StackPanel, it works but the buttons are right next to each other rather than being split evenly through the entire width of the screen.
I've done something similar to the above using ItemsControl and using a grid, and I can see each button getting added but they overlap each other in row 0, col 0. If I bind the row to the Column property for testing purposes, it build it correctly but my buttons are displayed on different rows which is not what I want. I want each button to be aligned horizontally.
How can I achieve this? I know I could just hard code 3 buttons and just change their icons and text and handle the relevant code by passing the relevant button as binded parameter, but ideally I'd like to build the buttons dynamically in a grid and position them using the column.
Note that the number of column would be fixed i.e. 3, as I'll never have more than this.
Thanks.
but ideally I'd like to use a grid so that I can specify in which
Column to set the button.
In any Xaml variant, why not just use that Grid, such as shown below, where the Grid is set to consumes all the horizontal space.
Then with the grid's center column to be star sized and to have the rest of the remaining space be consumed after button 1 and button 3, which auto size into their own spaces:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Button Grid.Column="0"/>
<Button Grid.Column="1" HorizontalAlignment="Center"/>
<Button Grid.Column="2"/>
</Grid>
If that fails, set button one's HorizontalAlignment to be Left and button three's as Right.
As an aside with the list box, it may not be stretching to the whole horizontal size of the screen. Check out my answer to a WP8 sizing issue:
ListBoxItem HorizontalContentAlignment.
I eventually found the answer to my problem in an article I found on the web.
You can check it out here: Using Grids with ItemsControl in XAML
In short, you need to subclass the itemsControl and you need overwrite the GetContainerForItemOverride method which will take care of copying the "data" of the ItemTemplate to the ContentPresenter. In this instance, the row and column, but for my requirement, it is just the Column, since my row will always be 0.
Here is core part of the code if you don't want to check the full article which resolve the problem of setting controls horizontally in a grid using ItemsControl but note the article takes care of creating rows & columns dynamically as well, which I'm not interested in for my project.
public class GridAwareItemsControl : ItemsControl
{
protected override DependencyObject GetContainerForItemOverride()
{
ContentPresenter container = (ContentPresenter)base.GetContainerForItemOverride();
if (ItemTemplate == null)
{
return container;
}
FrameworkElement content = (FrameworkElement)ItemTemplate.LoadContent();
BindingExpression rowBinding = content.GetBindingExpression(Grid.RowProperty);
BindingExpression columnBinding = content.GetBindingExpression(Grid.ColumnProperty);
if (rowBinding != null)
{
container.SetBinding(Grid.RowProperty, rowBinding.ParentBinding);
}
if (columnBinding != null)
{
container.SetBinding(Grid.ColumnProperty, columnBinding.ParentBinding);
}
return container;
}
}
The final xaml looks like this:
<controls:GridAwareItemsControl ItemsSource="{Binding Links}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid Background="Pink">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
</Grid>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button
Grid.Column="{Binding Column}"
Grid.Row="0"
Width="120" Height="120">
<ContentControl>
<StackPanel Orientation="Vertical">
<Image Source="{Binding Image}" Width="36" Height="36" Margin="5"
Stretch="UniformToFill" HorizontalAlignment="Center"/>
<TextBlock Text="{Binding Description}" Foreground="#0F558E"
FontSize="18" HorizontalAlignment="Center"/>
</StackPanel>
</ContentControl>
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</controls:GridAwareItemsControl>
Once I used the new control, my buttons were correctly placed inside the grid, and therefore were evenly spaced out as the grid took care of that wit the ColumnDefinitions.
If anyone knows how to achieve the same without having to create a new control and overriding the method (in other words, pure XAML), please post it as I'd be very interested to see how this can be done.
Thanks and thank you to Robert Garfoot for sharing this great code!
PS: Note that I've simplified my xaml in order to create a test sample without any style on the buttons, so these are rather large if you try based on this sample.
UPDATE:
Small typo correction but my grid column definition was defined as
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
but as #OmegaMan suggested, to be evenly spread, it should have been defined as
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
I was able to accomplish this with a stackpanel inside of a grid, avoiding columns altogether. If you set the stackepanel's HorizontalAlignment to "center", it will center itself inside the grid and grow as buttons are added, still staying centered inside of the grid. Then it's just a matter of margins to have the buttons equally spaced:
<Grid>
<StackPanel
VerticalAlignment="Stretch"
HorizontalAlignment="Center"
Orientation="Horizontal"
>
<Button HorizontalAlignment="Center" Content="Add" Width="104" Height="32" Margin="24,0"/>
<Button HorizontalAlignment="Center" Content="Edit" Width="104" Height="32" Margin="24,0"/>
<Button HorizontalAlignment="Center" Content="Remove" Width="104" Height="32" Margin="24,0"/>
</StackPanel></Grid>
Basically I'm getting some data from a service and displaying the results in a listbox. The template for the items is using a grid. NOTE: If there is a better way let me know.
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Image Grid.Column="0"/>
<TextBlock Grid.Column="1"/>
</Grid>
The problem is, that sometimes an image is not returned. In that case the column for the image should collapse and the text column should take up the full width.
I've tried a couple of different ways already with no luck. How can I collapse this column when no image is returned?
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image Grid.Column="0"/>
<TextBlock Grid.Column="1"/>
</Grid>
Setting the image column width to auto will resize the column width according to the image size. If there is no image the size will be set to 0. The text column is set to *, this way it always takes all the available space.
Note: If your images are big, you may need to set MaxWidth as well.
You can use Expander control and set IsExpanded property.
I am building a ListView that needs to have five columns - the first one needs to have text that can be any length and needs to wrap whenever the window size changes (in addition to changing the row height so the wrapped text is visible) and the other four columns are a static width of 45. I've been searching for hours on this and every solution I come across either requires a static width or doesn't work.
Solutions tried:
Column widths of auto, 1*, 2*, etc. (settings ignored)
DockPanel (settings ignored)
WrapPanel (ignored)
Setting Width to RelativeSource of parent for ActualWidth (ignored)
Any ideas? It seems like a significant number of people have had this same problem, but I would highly prefer to not have to go the static width route for this column. Especially since the content just gets cut off when I do that anyway (even with height="Auto" for the row). The width of the overall window could be as small as 1024, but could also be 1600+ which is why I want dynamic sizing. That way smaller screens will have the content wrap and larger screens will just show the one line since the content fits.
Here is the XAML:
<ListView.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="45" />
<ColumnDefinition Width="45" />
<ColumnDefinition Width="45" />
<ColumnDefinition Width="45" />
</Grid.ColumnDefinitions>
<!-- This is the TextBlock that needs to wrap its content (and
change the height of the row (so the full content is still
visible) to whatever the available space is, but should not
make overall ListView wider than the parent's width. -->
<TextBlock Text="{Binding Content}" Padding="20,6,6,6" />
<!-- These four blocks will have other content eventually, but only need
to be 45 wide -->
<TextBlock Text="X" Grid.Column="1" HorizontalAlignment="Center" />
<TextBlock Text="X" Grid.Column="2" HorizontalAlignment="Center" />
<TextBlock Text="X" Grid.Column="3" HorizontalAlignment="Center" />
<TextBlock Text="X" Grid.Column="4" HorizontalAlignment="Center" />
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
Not so easy...but it can be done.
I wrote a solution for you. In short, use Expression Blend to create a copy of the ListView Template and delete the ScrollViewer surrounding the ItemPresenter.
Here is a more indepth explanation:
How to have the TextBlock in a left column of a Grid in a ListView Template expand or shrink with text wrapping?
<ListView HorizontalContentAlignment="Stretch" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListView.ItemTemplate>
...
</ListView.ItemTemplate>
</ListView>
I'd add TextWrapping="Wrap" to the first TextBlock element.
I was wondering if I can have 2 controls in a horizontal-oriented StackPanel so that the right item should be docked to the right side of the StackPanel.
I tried the following but it didn't work:
<StackPanel Orientation="Horizontal">
<TextBlock>Left</TextBlock>
<Button Width="30" HorizontalAlignment="Right">Right<Button>
</StackPanel>
In the snippet above I want the Button to be docked to the right side of the StackPanel.
Note: I need it to be done with StackPanel, not Grid etc.
You can achieve this with a DockPanel:
<DockPanel Width="300">
<TextBlock>Left</TextBlock>
<Button HorizontalAlignment="Right">Right</Button>
</DockPanel>
The difference is that a StackPanel will arrange child elements into single line (either vertical or horizontally) whereas a DockPanel defines an area where you can arrange child elements either horizontally or vertically, relative to each other (the Dock property changes the position of an element relative to other elements within the same container. Alignment properties, such as HorizontalAlignment, change the position of an element relative to its parent element).
Update
As pointed out in the comments you can also use the FlowDirection property of a StackPanel. See #D_Bester's answer.
Yo can set FlowDirection of Stack panel to RightToLeft, and then all items will be aligned to the right side.
For those who stumble upon this question, here's how to achieve this layout with a Grid:
<Grid>
<TextBlock Text="Server:"/>
<TextBlock Text="http://127.0.0.1" HorizontalAlignment="Right"/>
</Grid>
creates
Server: http://127.0.0.1
Could not get this working using a DockPanel quite the way I wanted and reversing the flow direction of a StackPanel is troublesome. Using a grid is not an option as items inside of it may be hidden at runtime and thus I do not know the total number of columns at design time. The best and simplest solution I could come up with is:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="1" Orientation="Horizontal">
<!-- Right aligned controls go here -->
</StackPanel>
</Grid>
This will result in controls inside of the StackPanel being aligned to the right side of the available space regardless of the number of controls - both at design and runtime. Yay! :)
This works perfectly for me. Just put the button first since you're starting on the right. If FlowDirection becomes a problem just add a StackPanel around it and specify FlowDirection="LeftToRight" for that portion. Or simply specify FlowDirection="LeftToRight" for the relevant control.
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" FlowDirection="RightToLeft">
<Button Width="40" HorizontalAlignment="Right" Margin="3">Right</Button>
<TextBlock Margin="5">Left</TextBlock>
<StackPanel FlowDirection="LeftToRight">
<my:DatePicker Height="24" Name="DatePicker1" Width="113" xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit" />
</StackPanel>
<my:DatePicker FlowDirection="LeftToRight" Height="24" Name="DatePicker1" Width="113" xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit" />
</StackPanel>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="Left" />
<Button Width="30" Grid.Column="1" >Right</Button>
</Grid>
If you are having a problem like the one I had where labels were centered in my vertical stack panel, make sure you use full width controls. Delete the Width property, or put your button in a full-width container that allows internal alignment. WPF is all about using containers to control the layout.
<StackPanel Orientation="Vertical">
<TextBlock>Left</TextBlock>
<DockPanel>
<Button HorizontalAlignment="Right">Right</Button>
</DockPanel>
</StackPanel>
Vertical StackPanel with Left Label followed by Right Button
I hope this helps.
for windows 10
use relativePanel instead of stack panel, and use
relativepanel.alignrightwithpanel="true"
for the contained elements.
Maybe not what you want if you need to avoid hard-coding size values, but sometimes I use a "shim" (Separator) for this:
<Separator Width="42"></Separator>