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POHow to reference right-clicked object in WPF Context Menu item click event handler?
 

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  1. POHow to reference right-clicked object in WPF Context Menu item click event handler?
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    <p>In WPF application there is a <code>Grid</code> with a number of objects (they are derived from a custom control). I want to perform some actions on each of them using context menu:</p> <pre><code> &lt;Grid.ContextMenu&gt; &lt;ContextMenu&gt; &lt;MenuItem Name="EditStatusCm" Header="Change status" Click="EditStatusCm_Click"/&gt; &lt;/ContextMenu&gt; &lt;/Grid.ContextMenu&gt; </code></pre> <p>But in the event handler I cannot get know which of the objects was right-clicked:</p> <pre><code> private void EditStatusCm_Click(object sender, RoutedEventArgs e) { MyCustControl SCurrent = new MyCustControl(); MenuItem menu = sender as MenuItem; SCurrent = menu.DataContext as MyCustControl; // here I get a run-time error SCurrent.Status = MyCustControl.Status.Sixth; } </code></pre> <p>On that commented line Debugger says: <strong><em>Object reference not set to an instance of an object.</em></strong></p> <p>Please help, what is wrong in my code?</p> <p><strong>Edited (added):</strong></p> <p>I tried to do the same, using <strong>Command</strong> approach:</p> <p>I declared a <code>DataCommands</code> Class with <code>RoutedUICommand Requery</code> and then used <code>Window.CommandBindings</code></p> <pre><code>&lt;Window.CommandBindings&gt; &lt;CommandBinding Command="MyNamespace:DataCommands.Requery" Executed="RequeryCommand_Executed"&gt;&lt;/CommandBinding&gt; &lt;/Window.CommandBindings&gt; </code></pre> <p>XAML of MenuItem now looks like:</p> <pre><code>&lt;Grid.ContextMenu&gt; &lt;ContextMenu&gt; &lt;MenuItem Name="EditStatusCm" Header="Change status" Command="MyNamespace:DataCommands.Requery"/&gt; &lt;/ContextMenu&gt; &lt;/Grid.ContextMenu&gt; </code></pre> <p>And event handler looks like:</p> <pre><code> private void RequeryCommand_Executed(object sender, ExecutedRoutedEventArgs e) { IInputElement parent = (IInputElement)LogicalTreeHelper.GetParent((DependencyObject)sender); MyCustControl SCurrent = new MyCustControl(); SCurrent = (MuCustControl)parent; string str = SCurrent.Name.ToString();// here I get the same error MessageBox.Show(str); } </code></pre> <p>But debugger shows the same run-time error: <strong><em>Object reference not set to an instance of an object.</em></strong></p> <p>What is missing in my both approaches?</p> <p>How I should reference right-clicked object in WPF Context Menu item click event handler?</p>
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    1. COI tried using Command approach as more WPF-ish, but got the same error. I edited my question and added steps of my Command approach attempt. My understanding of how to get the clicked object reference is missing something in both cases
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