Fixed column width
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" HorizontalAlignment="Center" VerticalAlignment="Center"> <Grid Background="Beige" ShowGridLines="True"> <Grid.ColumnDefinitions> <ColumnDefinition Width="50" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition /> <RowDefinition /> </Grid.RowDefinitions> <TextBlock Grid.Column="0" Grid.Row="0">A:</TextBlock> <TextBlock Grid.Column="1" Grid.Row="0">a</TextBlock> <TextBlock Grid.Column="0" Grid.Row="1">B:</TextBlock> <TextBlock Grid.Column="1" Grid.Row="1">b</TextBlock> <TextBlock Grid.Column="0" Grid.Row="2">C:</TextBlock> <TextBlock Grid.Column="1" Grid.Row="2">c</TextBlock> </Grid> </Page>