Hide grid row in WPF

Question

I have a simple WPF form with a Grid declared on the form. This Grid has a bunch of rows:

Answer 1

The best and clean solution to collapse rows or columns is to use a DataTrigger so in your case:

<Grid>
    <Grid.RowDefinitions>
      <RowDefinition Height="Auto" MinHeight="30" />
      <RowDefinition Name="rowToHide">
        <RowDefinition.Style>
          <Style TargetType="{x:Type RowDefinition}">
            <Setter Property="Height" Value="Auto" />
            <Style.Triggers>
              <DataTrigger Binding="{Binding SomeBoolProperty}" Value="True">
                <Setter Property="Height" Value="0" />
              </DataTrigger>
            </Style.Triggers>
          </Style>
        </RowDefinition.Style>
      </RowDefinition>
      <RowDefinition Height="Auto" MinHeight="30" />
    </Grid.RowDefinitions>
  </Grid>

Answer 2

Set the Row's content visibility to Visibility.Collapsed instead of Hidden. This will make the content stop taking up space, and the row will shrink appropriately.