<ColumnDefinition Width="100" />
<ColumnDefinition Width="1.5*" MinWidth="300"/>
<ColumnDefinition Width="4*"/>
</Grid.ColumnDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<TextBlock Text="Col0Row0:" Grid.Row="0" Grid.Column="0"/>
<TextBlock Text="Col0Row1:" Grid.Row="1" Grid.Column="0"/>
<TextBlock Text="Col0Row2:" Grid.Row="2" Grid.Column="0"/>
<CheckBox Content="Col2Row0" Grid.Row="0" Grid.Column="2"/>
<Button Content="SpansCol1-2Row1-2" Grid.Row="1" Grid.Column="1" Grid.RowSpan="2" Grid.ColumnSpan="2"/>