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POGrid SharedSizeGroup - columns are bouncing, resizing in infinite loop
 

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  1. POGrid SharedSizeGroup - columns are bouncing, resizing in infinite loop
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    <p>I need table with both horizontal and vertical header (simple PivotGrid). I have found some similar (or almost same) problems here, but no one give the solution. In XAML I have defined this structure:</p> <pre><code>&lt;Grid x:Name="grdMain" Background="White" Grid.IsSharedSizeScope="True"&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="Auto"/&gt; &lt;ColumnDefinition Width="Auto"/&gt; &lt;ColumnDefinition Width="Auto"/&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;Grid Grid.Row="0" Grid.Column="1" x:Name="grdHorizontalHeader"&gt; &lt;!-- place for column definitions and header labels defined in code --&gt; &lt;/Grid&gt; &lt;Grid Grid.Row="1" Grid.Column="0" x:Name="grdVerticalHeader"&gt; &lt;!-- place for column definitions and header labels defined in code --&gt; &lt;/Grid&gt; &lt;Grid Grid.Row="1" Grid.Column="1" x:Name="grdContent"&gt; &lt;!-- place for column definitions and header labels defined in code --&gt; &lt;/Grid&gt; &lt;/Grid&gt; </code></pre> <p>So both header consist of grid with some ColumnDefinitions (resp. RowDefinitions) and I need to size Header-ColumnDefinitions according to Content-ColumnDefinitions. I do it in code:</p> <pre><code>foreach (var row in myColumnSource) { // Content columns definitions var cD = new ColumnDefinition(); cD.Width = GridLength.Auto; cD.SharedSizeGroup = "ColumnSharedSizeGroup" + row.Value; this.grdContent.ColumnDefinitions.Add(cD); // Header columns definitions var cD2 = new ColumnDefinition(); cD2.Width = GridLength.Auto; cD2.SharedSizeGroup = "ColumnSharedSizeGroup" + row.Value; this.grdHorizontalHeader.ColumnDefinitions.Add(cD2); ... </code></pre> <p>So Header-Column should share it's Width with Content-Column. But when I run the program, the columns are bouncing and resizing in infinite loop. Row's height sharing work fine. Where could be the problem?</p> <p><strong>EDIT</strong> only columns in header (grdHorizontalHeader) are resizing. Columns in grdContent have correct and stable width.</p>
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    1. COWhen I remove the `+ row.Value` piece of code, it work fine as well. But I need each column to be sized individualy.
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    2. COWhen I don't use GridLength.Auto, then it works fine also. It appears, that this autosize is source of problems.
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