R – WPF grid row height doesn’t match the height that I input

gridheightwpf

I've been pulling my hair out all day on this. For some reason when I set up my grid while I'm using some custom controls the actual height of the grid rows changes around and doesn't bother to use the height values that I give it. I originally thought it was because I was loading in custom controls in the code, but even when I take the custom controls out the problem remains. Here's what I have for the xaml

<Window x:Class="Pokemon_Planner.PokePlan"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="PokePlan" Height="600" Width="800">
<Grid x:Name="myGrid">

    <Grid.RowDefinitions>
        <RowDefinition Height="25" Name="row0"></RowDefinition>
        <RowDefinition Height="Auto" Name="row1"></RowDefinition>
        <RowDefinition Height="48" Name="row2"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto"></ColumnDefinition>
        <ColumnDefinition Width="Auto"></ColumnDefinition>
    </Grid.ColumnDefinitions>
    <StackPanel Orientation="Horizontal" Grid.Column="1" Grid.Row="0">
        <ComboBox Name="cmbSort" Width="100">
            <ComboBoxItem Content="Name"></ComboBoxItem>
            <ComboBoxItem Content="Type"></ComboBoxItem>
            <ComboBoxItem Content="Element"></ComboBoxItem>
            <ComboBoxItem Content="BP"></ComboBoxItem>
            <ComboBoxItem Content="Min Damage"></ComboBoxItem>
            <ComboBoxItem Content="Max Damage"></ComboBoxItem>
        </ComboBox>
        <Button Name="btnSort" Click="btnSort_Click">Sort</Button>
        <Button Name="btnRefresh" Click="btnRefresh_Click">Refresh</Button>
        <Button Name="btnFilter">Filter</Button>
    </StackPanel>
    <StackPanel Grid.Column="0" Grid.Row="2" Orientation="Horizontal" VerticalAlignment="Top" Name="stkMoveSet1">

    </StackPanel>
    <StackPanel Grid.Column="0" Grid.Row="3" Orientation="Horizontal" Name="stkMoveSet2">

    </StackPanel>
    <ScrollViewer Grid.Row="1" Grid.Column="1" Grid.RowSpan="6" Height="Auto" Name="scrollViewerMoves" >
        <StackPanel Grid.Row="1" Grid.Column="1" Grid.RowSpan="6" Name="moveStackPanel"></StackPanel>
    </ScrollViewer>
</Grid>

The row that was set to have a height of 48 still had that height set, but the 'actual height' was 446 which is still really screwing my grid up. The numbers vary and I've tried a lot of different combinations between set numbers and auto but I can't seem to get this one window to behave correctly. Any ideas?

Best Answer

you might want to change "row2" grid row height definition to "auto" and set height to 48 for the "scrollViewerMoves" scrollviewer. Smth like this:

...
<RowDefinition Height="Auto" x:Name="row2"></RowDefinition>
...
<ScrollViewer Grid.Row="1" Grid.Column="1" Height = "48" Name="scrollViewerMoves" >
...

I guess this should do what you need, regards

Viewport-Percentage (or Viewport-Relative) Lengths

What are Viewport-Percentage Lengths?

From the linked W3 Candidate Recommendation above:

The viewport-percentage lengths are relative to the size of the initial containing block. When the height or width of the initial containing block is changed, they are scaled accordingly.

These units are vh (viewport height), vw (viewport width), vmin (viewport minimum length) and vmax (viewport maximum length).

How can this be used to make a divider fill the height of the browser?

For this question, we can make use of vh: 1vh is equal to 1% of the viewport's height. That is to say, 100vh is equal to the height of the browser window, regardless of where the element is situated in the DOM tree:

HTML

<div></div>

CSS

div {
    height: 100vh;
}

This is literally all that's needed. Here is a JSFiddle example of this in use.

What browsers support these new units?

This is currently supported on all up-to-date major browsers apart from Opera Mini. Check out Can I use... for further support.

How can this be used with multiple columns?

In the case of the question at hand, featuring a left and a right divider, here is a JSFiddle example showing a two-column layout involving both vh and vw.

How is `100vh` different from `100%`?

Take this layout for example:

<body style="height: 100%">
    <div style="height: 200px">
        <p style="height: 100%; display: block;">Hello, world!</p>
    </div>
</body>

The p tag here is set to 100% height, but because its containing div has 200 pixels height, 100% of 200 pixels becomes 200 pixels, not 100% of the body height. Using 100vh instead means that the p tag will be 100% height of the body regardless of the div height. Take a look at this accompanying JSFiddle to easily see the difference!

Html – Make body have 100% of the browser height

Try setting the height of the html element to 100% as well.

html, 
body {
    height: 100%;
}

Body looks to its parent (HTML) for how to scale the dynamic property, so the HTML element needs to have its height set as well.

However the content of body will probably need to change dynamically. Setting min-height to 100% will accomplish this goal.

html {
  height: 100%;
}
body {
  min-height: 100%;
}

Best Answer

Related Solutions

Html – How to make a div 100% height of the browser window