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POWPF DataGrid: Get column binding property for filtering
 

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  1. POWPF DataGrid: Get column binding property for filtering
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    <p>I am trying to develop a filtering functionality for WPF <code>DataGrid</code> (from the WPF Toolkit). I want a user to right-click any cell and select <code>Filter</code> from its <code>CcontextMenu</code>, and then the grid should be filtered by the cell's value.</p> <p>I am trying the M-V-VM pattern. My windows's datacontext is <code>MainWindowViewModel</code> which has a property <code>Transactions</code>. This property returns <code>ObservableCollection&lt;TransactionViewModel&gt;</code>, and the data grid uses this collection as its items source. So basically each row is bounded to <code>TransactionViewModel</code> (as you can guess, this grid lists transactions). <code>MainWindowsViewModel</code> has <code>ICollectionView</code> which is used for filtering and tracking the currently selected row. The <code>DataGrid</code> has its property <code>IsSynchronizedWithCurrentItem</code> set to "true", so <code>myCollectionView.CurrentItem</code> gives me the currently selected <code>TransactionViewModel</code>.</p> <p>The only thing I still need to know is by which column I need to filter. This depends on where the user clicked the context menu. So I am trying to pass this information using <code>CommandProperty</code> of the context menu item. And here I have a real problem. I tried this:</p> <pre><code>CommandParameter="{Binding Column.Binding.Path.Path, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type tk:DataGridCell}}}" /&gt; </code></pre> <p>This is really ugly, but this works for <code>DataGridTextColumn</code>s. Unfortunately, I have also <code>DataGridTemplateColumn</code>s, and they don't work (the path is different there, because I need to reach the actual cell template)... </p> <p>So how can I implement this functionality? Perhaps the whole way is wrong? I didn't find any valuable example on that. The only thing I found is the WPF <code>DataGrid</code> autofilter implementation on the Codeproject which doesn't work at all for some reason...</p> <p>Thank you.</p>
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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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