Databases
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PO
 

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  1. PO
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    <p>Is this what you want? Notice the GridSplitter property ResizeBehavior.</p> <pre><code>&lt;Grid &gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="5*"/&gt; &lt;ColumnDefinition Width="auto"/&gt; &lt;ColumnDefinition Width="2*"/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;TreeView&gt; &lt;TreeViewItem Header="1"&gt; &lt;TreeViewItem Header="2"&gt; &lt;TreeViewItem Header="3"/&gt; &lt;/TreeViewItem&gt; &lt;TreeViewItem Header="3"&gt; &lt;TreeViewItem Header="4"/&gt; &lt;/TreeViewItem&gt; &lt;TreeViewItem Header="5"/&gt; &lt;TreeViewItem Header="6"/&gt; &lt;/TreeViewItem&gt; &lt;/TreeView&gt; &lt;GridSplitter Grid.Column="1" Width="10" ResizeDirection="Columns" ResizeBehavior="PreviousAndNext"/&gt; &lt;Canvas Grid.Column="2" Background="LightGray"/&gt; &lt;/Grid&gt; </code></pre> <p>Edit: Here is a working example, showing both approaches. If this is not what you want, then please say so.</p> <pre><code>&lt;Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="WpfApplication1.MainWindow" Title="MainWindow" d:DesignWidth="516" d:DesignHeight="310"&gt; &lt;Grid&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="*"/&gt; &lt;ColumnDefinition Width="*"/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="auto"/&gt; &lt;RowDefinition Height="*"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;Label Content="Change size of content"/&gt; &lt;Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Margin="10"&gt; &lt;Expander Header="Expander" &gt; &lt;Grid &gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="5*"/&gt; &lt;ColumnDefinition Width="auto"/&gt; &lt;ColumnDefinition Width="2*"/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;TreeView&gt; &lt;TreeViewItem Header="1"&gt; &lt;TreeViewItem Header="2"&gt; &lt;TreeViewItem Header="3"/&gt; &lt;/TreeViewItem&gt; &lt;TreeViewItem Header="3"&gt; &lt;TreeViewItem Header="4"/&gt; &lt;/TreeViewItem&gt; &lt;TreeViewItem Header="5"/&gt; &lt;TreeViewItem Header="6"/&gt; &lt;/TreeViewItem&gt; &lt;/TreeView&gt; &lt;GridSplitter Grid.Column="1" Width="10" ResizeDirection="Columns" ResizeBehavior="PreviousAndNext"/&gt; &lt;Canvas Grid.Column="2" Background="LightGray"/&gt; &lt;/Grid&gt; &lt;/Expander&gt; &lt;/Border&gt; &lt;Label Content="Change size of expander" Grid.Column="1"/&gt; &lt;Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Grid.Column="1" Margin="10"&gt; &lt;Grid &gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="5*"/&gt; &lt;ColumnDefinition Width="auto"/&gt; &lt;ColumnDefinition Width="2*"/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Expander&gt; &lt;TreeView&gt; &lt;TreeViewItem Header="1"&gt; &lt;TreeViewItem Header="2"&gt; &lt;TreeViewItem Header="3"/&gt; &lt;/TreeViewItem&gt; &lt;TreeViewItem Header="3"&gt; &lt;TreeViewItem Header="4"/&gt; &lt;/TreeViewItem&gt; &lt;TreeViewItem Header="5"/&gt; &lt;TreeViewItem Header="6"/&gt; &lt;/TreeViewItem&gt; &lt;/TreeView&gt; &lt;/Expander&gt; &lt;GridSplitter Grid.Column="1" Width="10" ResizeDirection="Columns" ResizeBehavior="PreviousAndNext"/&gt; &lt;Canvas Grid.Column="2" Background="LightGray"/&gt; &lt;/Grid&gt; &lt;/Border&gt; &lt;/Grid&gt; &lt;/Window&gt; </code></pre>
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    1. POHow to resize the Expander.Content?
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    1. USAkselK
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    1. This table or related slice is empty.
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    1. COI don’t see an `Expander`!?
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    2. CODepending on the purpose, the root grid goes into the expander's content, or the treeview is placed into the expander. Try both and see which one works as intended.
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    3. COOk, i will try it… but it sounds a little bit like you’re just took a wild guess.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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