Inside my itemsControl the item are not occupying the whole width of the user control. Am using DataTemplateSelector (manually written class) for selecting the type of template.
I checked the post Silverlight: Set Items Widths in ItemsControl to Stretch but its not working for me. Items are not automatically stretching and utilizing the full space. Please help! Thanks in advance
<ItemsControl ItemsSource ="{Binding}" Margin="0,5,0,0" HorizontalContentAlignment="Stretch" >
<ItemsControl.ItemTemplate>
<DataTemplate>
<local:AddressFieldsTemplateSelector Content="{Binding}" x:Name="addressTemplateSelectorObject">
<!-- TextBox template-->
<local:AddressFieldsTemplateSelector.TextBoxDataTemplate>
<DataTemplate>
<Grid Margin="0,0,0,5" HorizontalAlignment="Stretch" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.5*" />
<ColumnDefinition Width=".1*" />
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding AddressFieldName}" Grid.Column="0" Style="{StaticResource DefaultTheme_TextBlockStyle}"/>
<TextBox Text="{Binding AddressFieldValue, Mode=TwoWay}" Grid.Column="2" Style="{StaticResource TextBoxStyle}" TextWrapping="NoWrap" MaxLength="50" HorizontalAlignment="Stretch" />
</Grid>
</DataTemplate>
</local:AddressFieldsTemplateSelector.TextBoxDataTemplate>
</local:AddressFieldsTemplateSelector>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
Items inside your datatemplate will always take up all available width due to the star width. The problem is most likely with the itemscontrol itself. Are you sure that the itemscontrol is not contained in a StackPanel, or auto-width Grid column. Is the HorizontalAlignment of the ItemsControl set to Left ?
Related
I have this bit of XAML:
<StatusBar Grid.Row="2">
<StatusBar.ItemsPanel>
<ItemsPanelTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
</Grid>
</ItemsPanelTemplate>
</StatusBar.ItemsPanel>
<StatusBarItem>
<ComboBox ItemsSource="{Binding StatusMessages}"/>
</StatusBarItem>
</StatusBar>
StatusBarItem is taking up the entire width of the window but the combobox within it is still taking up minimal width. How do I get it to fill the entire width?
Try adding HorizontalContentAlignment = "Stretch" to ComboBox.
<StatusBar>
<StatusBarItem HorizontalContentAlignment="Stretch">
<ComboBox ItemsSource="{Binding StatusMessages}" SelectedIndex="{Binding SelectedStatusIndex, Mode=OneWay}"/>
</StatusBarItem>
</StatusBar>
This worked
i have create my own tree-view with multi column Headers using standard wpf controls
Dock Panel
DataGrid , Just for creating the columns and having sorting and resizing capabilities. The height of datagrid is only 25 , we only need to show columns not data here.
The TreeView Control with hierarchy
i have add the image just to understand the problem and the XAML code
The Account Type should be always align at the left no matter how many levels are expanded in the "first column"
somewhere in the xaml of the TreeViewItemTemplate i lost the idea.. Can anyone help me to fix the alignments
<DockPanel DataContext="{StaticResource cust}">
<Button Command="{Binding rld}" Content="reload" DockPanel.Dock="Top"/>
<!--Unbound DataGrid just to display the headers-->
<DataGrid Height="25" DockPanel.Dock="Top" ItemsSource="{Binding Customers}" AutoGenerateColumns="False" Margin="0,0,0,0">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Name}" Header="Name" x:Name="col0"></DataGridTextColumn>
<DataGridTextColumn Binding="{Binding AccountType}" Header="Account Type" x:Name="col1"></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
<!--Actual Binding with Tree View and item Template to display the properties-->
<TreeView ItemsSource="{Binding Customers}" DockPanel.Dock="Top">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding rel}">
<Grid HorizontalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding ElementName=col0,Path=ActualWidth}"></ColumnDefinition>
<ColumnDefinition Width="{Binding ElementName=col1,Path=ActualWidth}" ></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="{Binding Name}" VerticalAlignment="Center"/>
<TextBlock Grid.Column="1" Text="{Binding AccountType}" VerticalAlignment="Center" />
</Grid>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
</DockPanel>
The TreeView naturally indents child items, so its normal what you see.
A possible fix could be to set a negative left margin in the AccountType TextBlock with the same value of the indent, therefore neutralizing the gap.
You need to apply it only if its parent is expanded. This can easily be done modifying a bit your viewmodels.
<TextBlock Grid.Column="1" Margin="{Binding marginPropertyInVM}" Text="{Binding AccountType}" VerticalAlignment="Center"/>
You can limit the size of your first column by changing your template grids column definition to:
<Grid HorizontalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="{Binding ElementName=col1,Path=ActualWidth}" ></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="{Binding Name}" VerticalAlignment="Center"/>
<TextBlock Grid.Column="1" Text="{Binding AccountType}" VerticalAlignment="Center" />
</Grid>
This way the first column will only be allowed the remaining width once the 2nd column and indent have been allocated their space.
I am trying to fit Textblock and a button in DataGrid Cell. The Textblock holds a portion of my text and when I click the button a dialog is display. I general my code looks like the one below
<DataGridTemplateColumn Header="Message" Width="Auto" MinWidth="60">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientetion="Horrizontal">
<TextBlock MinWidth="200" TextTrimming="CharacterEllipsis" Text="{Binding Text}" />
<Button DockPanel.Dock="Right" Width="90" Margin="1" />
</StackPanel>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
I want the Button to be always at righter side of the cell and its width to be fixed. The TextBlock needs to be variable, for example when I resize the window, and so the DataGrid, the TextBlock should stretch also.
The problem is that, I can not achieve this behaviour / view. The TextBlock varies on each DataGrid line and in some case the button is not at the righter of the cell.
I tried to change the StackPanel to Grid or DockPanel but still I can not get the desirable result.
Using Grid
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="100" Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" TextTrimming="CharacterEllipsis" Text="{Binding Text}" />
<Button Grid.Column="1" Margin="1" />
</Grid>
Any thoughts to share?
StackPanel doesn't really have the concept of aligning to the right. It stacks the elements as close as it can. You can get around this in different ways but in this case, use a DockPanel instead:
<DockPanel>
<Button DockPanel.Dock="Right" Width="90" Margin="1" />
<TextBlock MinWidth="200" TextTrimming="CharacterEllipsis" Text="{Binding Text}" />
</DockPanel>
Note that I moved the TextBlock to be the last child element of the DockPanel. DockPanel, after laying out the other child elements, allocates the remaining space to the last child element (unless you specify LastChildFill=false). In this case, we want the TextBlock to take up the remaining space.
UPDATE: based on the comments above, in addition to changing the panel type to a DockPanel (or Grid), you can use DataGridTemplateColumn.Width to a fixed value instead of Auto. This would make the column load with the specified with but the user can still modify the column with if they want to:
<DataGridTemplateColumn Header="Message" Width="60" MinWidth="60">
I'd set a static value to the DataGridTemplateColumn.Width--it can help with rendering performance. Set the size on your buttons too, so it doesn't size to fit text.
This works for me (I used the border for visualization purposes):
<Window ...
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<DataTemplate DataType="{x:Type local:Model}"
x:Key="VmItem">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Border BorderBrush="Black" BorderThickness="1">
<TextBlock Grid.Column="0" TextTrimming="CharacterEllipsis" Text="{Binding Original}" />
</Border>
<Button Grid.Column="1" Margin="1" Content="{Binding Encoded}" MinWidth="90" MaxWidth="90"/>
</Grid>
</DataTemplate>
</Window.Resources>
<Grid>
<DataGrid ItemsSource="{Binding Items}" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTemplateColumn Header="Message" CellTemplate="{StaticResource VmItem}" Width="300" MinWidth="100"/>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>
Proof:
I am trying to layout a couple of controls:
The light gray vertical lines are grid splitters. Each line in this table is a grid with three columns, the label on the left, the splitter in the middle and the control on the right, including the text boxes and the image.
I want all columns to be aligned. Here is the data template I use for each line:
<DataTemplate x:Key="PropertyLineTemplate">
<Grid Margin="0,0,0,1">
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Name"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition SharedSizeGroup="Value"/>
</Grid.ColumnDefinitions>
<TextBlock
Grid.Column="0"
VerticalAlignment="Center"
Text="{Binding Title}" />
<GridSplitter Grid.Column="1" Width="2"/>
<SomeUserControl
Grid.Column="2"
Content="{Binding}"
Margin="4, 0, 0, 0"/>
</Grid>
</DataTemplate>
and the template for the view itself:
<DataTemplate DataType="{x:Type vm:PropertiesViewModel}">
<DockPanel>
<!-- Properties -->
<ScrollViewer>
<StackPanel Margin="10">
<ItemsControl ItemsSource="{Binding Properties}"
ItemTemplate="{StaticResource PropertyLineTemplate}" />
</StackPanel>
</ScrollViewer>
</DockPanel>
</DataTemplate>
and the usage of both:
<ContentControl Content="{Binding SelectedItem}" Grid.IsSharedSizeScope="True">
</ContentControl>
where SelectedItem is of type PropertiesViewModel.
I also tried to place Grid.IsSharedSizeScope="True" in each individual grid directly and on the panels containing the control, without effects. How can I achieve that all columns share the width?
Grid.IsSharedSizeScope should be set on the first parent ItemsControl of a Grid, in your case it would be the ItemsControl in the ViewModel template. Then the columns width will be adjusted.
However, if you move one GridSplitter, then it will only adjust that row, not the others (See WPF SharedSizeGroup GridSplitter Issue for a potential solution, if you need resizing.)
Other stuff: you don't need the Stackpanel wrapper around the ItemsControl, since the ItemsControl is the only child. If you need to adjust the panel the ItemsControl uses, then set it on the Property ItemsPanel, like this:
<ItemsControl ItemsSource="{Binding Properties}"
Grid.IsSharedSizeScope="True"
ItemTemplate="{StaticResource PropertyLineTemplate}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel/> <!-- Or <WrapPanel/> or <UniformGrid/> etc. -->
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
However, the Stackpanel is the default panel of the ItemsControl.
Based on Nautious' answer I've solved the problem by defining two ColumnDefinitions as resources and binding the Width property of all columns in question to the Width property of these 'master column definitions':
<ColumnDefinition x:Key="MasterColumnDefinition" />
<ColumnDefinition x:Key="MasterColumnDefinition2" />
<DataTemplate x:Key="PropertyLineTemplate">
<Grid Margin="0,0,0,1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding Source={StaticResource MasterColumnDefinition}, Path=Width, Mode=TwoWay}"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="{Binding Source={StaticResource MasterColumnDefinition2}, Path=Width, Mode=TwoWay}"/>
</Grid.ColumnDefinitions>
...
</Grid>
</DataTemplate>
Might be a little hacky, but it's simple and works. Not, however, that the shared size scope of this solution is the scope in which the resources are defined. I.e. placing these template in the app's resources will lead to all columns in the application being resized synchronously.
I'm bulding a small WPF app over here. It's all built strictly with MVVM, using nothing but DataTemplates linked to view model types.
I've seen alot of questions about how to stretch and clip the contents of ListBoxes so that the items fill its parent. After alot of experimenting I managed to get my head around that but now I find myself in the same scenario with the ItemsControl but the same tricks doesn't seem to work.
Here's one of the DataTemplates in use (a simple TextBox). Note how I tried setting the HorizontalAlignment ...
<DataTemplate DataType="{x:Type vm:OneOfMyViewModelTypes}">
<TextBox
Text="{Binding Path=Value}"
HorizontalAlignment="Stretch"
/>
</DataTemplate>
Here's the ItemsControl inside a Grid ...
<Grid Background="Gray">
<Grid.Margin>
<Thickness
Left="{StaticResource ConfigurationDefaultMargin}"
Right="{StaticResource ConfigurationDefaultMargin}"
Bottom="{StaticResource ConfigurationDefaultMargin}"
Top="{StaticResource ConfigurationDefaultMargin}"
/>
</Grid.Margin>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="_key" Width="Auto"/>
<ColumnDefinition SharedSizeGroup="_value" Width="*"/>
</Grid.ColumnDefinitions>
<ItemsControl
Background="DimGray"
Grid.IsSharedSizeScope="True"
ItemsSource="{Binding Path=Configuration, Mode=OneWay}"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="_key"/>
<ColumnDefinition SharedSizeGroup="_value"/>
</Grid.ColumnDefinitions>
<TextBlock
Style="{StaticResource ExtensionConfigurationLabel}"
Grid.Column="0"
Margin="5,5,5,0"
Text="{Binding Path=Caption}"
/>
<ContentPresenter
Grid.Column="1"
HorizontalAlignment="Stretch"
Margin="5,5,5,0"
Content="{Binding}"
/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
I've used colors to see how the controls sizes. The Grid is gray and the ItemsControl is dark gray.
This is the result ...
As you can see from the colors the containing Grid stretches while the ItemsControl does not. I did set its HorizontalAlignment property to Stretch but it seems it has no effect. Is there anything else I need do?
Thanks
You have two columns in your main (outer) grid, yet you use only the first column.
The second column uses all the remaining space.