Question

The property MaxHeight seems to be ignored on RowDefinitions with Height="Auto":

Consider the following XAML:

<Grid>
  <Grid.RowDefinitions>
    <RowDefinition Height="Auto" MaxHeight="100"/>
  </Grid.RowDefinitions>
  <ListBox>
    <ListBox.Items>
      <ListBoxItem>a</ListBoxItem>
      <ListBoxItem>b</ListBoxItem>
      <ListBoxItem>c</ListBoxItem>
      <ListBoxItem>d</ListBoxItem>
      <ListBoxItem>e</ListBoxItem>
      <ListBoxItem>f</ListBoxItem>
      <ListBoxItem>g</ListBoxItem>
      <ListBoxItem>h</ListBoxItem>
      <ListBoxItem>i</ListBoxItem>
      <ListBoxItem>j</ListBoxItem>
    </ListBox.Items>
  </ListBox>
</Grid>

The Grid will be bigger than 100 dip.

How can I constrain a RowDefinition in its Height?

Answer 1

Must be something else. Tried it in a clean Window and the listbox stops at 100 pixels.
Maybe check your styling.