<Grid>
  <Grid.RowDef...>
     <RowDef... Height="Auto"/>
     <RowDef... Height="32"/>
     <Grid Grid.Row="0" Visibility="{Binding GridVisibility, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
        Тут любые контролы
     </Grid>
     <Label Grid.Row="0" Visibility="{Binding LabelVisibility, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Content="Some label text"/>
  </Grid.RowDef..>
</Grid>

this.DataContext = new ViewModel();

class ViewModel : INotifyPropertyChanged
{
      public event PropertyChangedEventHandler PropertyChanged;
      protected void OnPropertyChanged(string propertyName)
      {
          PropertyChangedEventHandler handler = PropertyChanged;
          if (handler != null)
          {
              handler(this, new PropertyChangedEventArgs(propertyName));
          }
      }
      
      public Visibility _gridVisibility;
      public Visibility GridVisibility 
      {
          get { return _gridVisibility; }
          set
          {
              if (_gridVisibility  != value)
              {
                    _gridVisibility = value;
                    OnPropertyChanged("GridVisibility ");
              }
          }
      }
      //Так же объявить и LabelVisibility
}