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  1. PO
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    <p>Grid width should be calculated as </p> <pre><code>grid1.Width = (scrollViewer1.ViewportWidth / 3) * grid1.ColumnDefinitions.Count; grid1.Height = (scrollViewer1.ViewportHeight / 2) * grid1.RowDefinitions.Count; </code></pre> <p>This seemed to work for me:</p> <p>XAML:</p> <pre><code>&lt;DockPanel&gt; &lt;ListBox Width="150" DockPanel.Dock="Left" BorderBrush="AliceBlue" BorderThickness="2"&gt; &lt;Button Name="AddColumn_Button" Width="100" Height="25" Content="Add Column" Click="AddColumn_Button_Click" Margin="5"/&gt; &lt;Button Name="AddRow_Button" Width="100" Height="25" Content="Add Row" Margin="5" Click="AddRow_Button_Click" /&gt; &lt;/ListBox&gt; &lt;ScrollViewer Name="scrollViewer1" BorderBrush="AliceBlue" BorderThickness="2" SizeChanged="scrollViewer1_SizeChanged" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" Margin="1"&gt; &lt;Grid Name="grid1" ShowGridLines="True" &gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition /&gt; &lt;RowDefinition /&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition /&gt; &lt;ColumnDefinition /&gt; &lt;ColumnDefinition /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;/Grid&gt; &lt;/ScrollViewer&gt; &lt;/DockPanel&gt; </code></pre> <p>CODE BEHIND:</p> <pre><code> private void scrollViewer1_SizeChanged(object sender, SizeChangedEventArgs e) { SizeGrid(); } private void AddColumn_Button_Click(object sender, RoutedEventArgs e) { ColumnDefinition gridColN = new ColumnDefinition(); grid1.ColumnDefinitions.Add(gridColN); SizeGrid(); } private void AddRow_Button_Click(object sender, RoutedEventArgs e) { RowDefinition row = new RowDefinition(); grid1.RowDefinitions.Add(row); SizeGrid(); } private void SizeGrid() { grid1.Width = (scrollViewer1.ViewportWidth / 3) * grid1.ColumnDefinitions.Count; grid1.Height = (scrollViewer1.ViewportHeight / 2) * grid1.RowDefinitions.Count; } </code></pre>
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    1. COIs the only way to resize the columns, so that they are always 1/3 of ViewPortWidth's, is to loop through all the column definitions?
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      1. USAustin Henley
    2. COThe solution I provided doesn't do any looping. It just re-sizes the grid based on the number of columns & rows defined so you keep 6 cells in view. Re-size occurs when a new column/row is added or the ScrollViewer changes size. Am I missing something in your question?
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    3. COI got it to work (I was manually setting the width of each column) although it is very laggy (probably a question of its own).
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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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