Set Row Height and column Width for Grid
<Window x:Class="Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="GridButton" Height="193" Width="219"> <Grid> <Button Name="btnGrid" Height="100" Width="150"> <Grid Height="90" Width="140"> <Grid.RowDefinitions> <RowDefinition Height="33*" /> <RowDefinition Height="33*" /> <RowDefinition Height="33*" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="33*" /> <ColumnDefinition Width="33*" /> <ColumnDefinition Width="33*" /> </Grid.ColumnDefinitions> <Label Content="Left" Grid.Row="0" Grid.Column="0" /> <Label Content="Middle" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3" VerticalAlignment="Center" HorizontalAlignment="Center" /> <Label Content="Right" Grid.Row="2" Grid.Column="2" VerticalAlignment="Bottom" HorizontalAlignment="Right" /> </Grid> </Button> </Grid> </Window>