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    <p>As others have said the VM shouldn't know about the view directly in MVVM so it doesn't make sense really that the VM triggers something on your custom control to clear everything. </p> <p>I would have set the <code>DataContext</code> of the custom control to an object that has all the properties you want to clear, which are all each bound (two-way) to your textboxes etc. Then in the Save() method you can set a new object (which the custom control <code>DataContext</code> is bound to) and all the properties will be cleared for you (assuming you have implemented <code>INotifyPropertyChanged</code> on the object).</p> <p>UPDATED:</p> <p>As per my comment, see an example of the workaround for your current setup (untested btw):</p> <pre><code> public static DependencyProperty SelectedItemProperty = DependencyProperty.Register("SelectedItem", typeof(CustomObject), typeof(ExampleCustomControl), new PropertyMetadata(default(CustomObject), OnSelectedItemChanged)); private static void OnSelectedItemChanged(DependencyObject source, DependencyPropertyChangedEventArgs e) { var cont = source as ExampleCustomControl; //do all the clearing of txtboxes etc here.... cont.SearchTextBox = string.Empty; } </code></pre> <p>But I would still try and move all this into the VM. i.e. have a clear command, like you do with the save command and bind the textbox text etc to a property in the VM and when the command is called it clears everything, which you can then easily call from the Save method in the VM too. But obviously I have no idea what you are trying to achieve in the long run or how selectedItem and the textboxes etc are related, so depends (as always) i guess.</p>
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    1. COThe suggested solution won't work since the SearchTextBox is not statically-typed.
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    2. COnot if you use the DependencyObject and cast back to your ExampleCustomControl, see my updated answer
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    3. COHow would I implement the ExampleCustomControl as a View/ViewModel so that I can reuse the control (and the contained search functionality) easily and bind it to the SelectedItem from within my TestViewModel?
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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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