In WPF, how do I get the content of a tabItem to fill available space?

StackOverflow https://stackoverflow.com/questions/819520

  •  03-07-2019
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Question

I do not know what I am doing wrong here. In the XAML below, the Border does not fill the available space on the tabItem (just lots of whitespace). How do I fill the entire tab page?

<TabControl>
    <TabItem Header="Plant State">
        <Border Background="Red" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"></Border>
    </TabItem>
</TabControl>
Was it helpful?

Solution

I figured this out with the help of Matt Hamilton. This actually works fine if you are using a regular TabControl (default Template).

I am using a xaml "theme" that alters the default control template. That is causing the layout to fail, so I will have to investigate and figure out what is wrong.

OTHER TIPS

Nest a DockPanel in there, have you tried that?

Andrew

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