How do I get a TextBox to fill a resizable column? - wpf

Question

I'm trying to get a TextBox to fill the available space in a resizable column. The TextBox is part of a user control:
<UserControl x:Class="TextBoxLayout.FieldControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Label Grid.Column="0">Name</Label>
<TextBox Grid.Column="1"/>
</Grid>
</UserControl>
This user control is in a window with a vertical splitter:
<Window x:Class="TextBoxLayout.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TextBoxLayout"
Title="Text box layout" Height="400" Width="600">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="100"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition MinWidth="100"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<local:FieldControl Grid.Column="0" Grid.Row="0" MaxWidth="200" HorizontalAlignment="Left"/>
<TextBlock Grid.Column="0" Grid.Row="1" Text="Testing"/>
<GridSplitter Grid.Column="1" Grid.Row="0" Grid.RowSpan="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="3"/>
<TextBlock Grid.Column="2" Grid.Row="0" Grid.RowSpan="2" Text="Testing"/>
</Grid>
</Window>
The problem is the TexTBox appears to be very narrow - what I'd want it to do is fill the left column and resize with the splitter. How do I do that?

Answer 1

Use HorizontalAlignment="Stretch" instead of "Left" for FieldControl. Remove MaxWidth if required. Use TextAlignment to align text.

Answer 2

Just wanted to add to more examples for future code searches.
I put this in the top of the xaml file:
<UserControl.Resources>
<Style TargetType="{x:Type TextBlock}" x:Key="CenterCell">
<Setter Property="Background" Value="{Binding Included, Converter={StaticResource BoolToColorConverter}}"/>
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="TextAlignment" Value="Center"/>
</Style>
</UserControl.Resources>
And then in the datagrid:
<DataGridTextColumn Header="Excluded" Binding="{Binding Excluded}" ElementStyle="{StaticResource CenterCell}"/>
This centers the text and sorting is still enabled. The textbox fills the cell and in this case is colored using a bool converter.

Answer 3

just see whether is that you want
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="100" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition MinWidth="100" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition />
</Grid.RowDefinitions>
<local:FieldControl Grid.Column="0"
Grid.Row="0"
Margin="2"
/>
<TextBlock Grid.Column="0"
Grid.Row="1"
Text="Testing" />
<GridSplitter Grid.Column="1"
Grid.Row="0"
Grid.RowSpan="2"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Width="3" />
<TextBlock Grid.Column="2"
Grid.Row="0"
Grid.RowSpan="2"
Text="Testing" />
</Grid>