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    <p><strong>Why you get that error</strong></p> <p>Do you have something like this in the content of a Resources property?</p> <pre><code>&lt;local:BoolToCursorConverter x:Key="CursorConverter" /&gt; </code></pre> <p>If not then that's what is wrong but I'm guessing you already do.</p> <p>In that case you I suspect you have placed it in the <code>Resources</code> property of the <code>Grid</code> it applies to. That would be why it can not be found. <code>StaticResource</code> are resolved immediately as the Xaml is parsed. Hence any key used must already be loaded into a resource dictionary prior to use. The Xaml parser knows nothing of the contents of the Grid's <code>Resources</code> property because it hasn't processed it yet. Hence:-</p> <pre><code>&lt;UserControl&gt; &lt;Grid Cursor="{Binding IsLoading, Converter={StaticResource CursorConverter}}"&gt; &lt;Grid.Resources&gt; &lt;local:BoolToCursorConverter x:Key="CursorConverter" /&gt; &lt;/Grid.Resources&gt; &lt;!-- Contents here --&gt; &lt;/Grid&gt; &lt;/UserControl&gt; </code></pre> <p>will fail. Where as:-</p> <pre><code>&lt;UserControl&gt; &lt;UserControl.Resources&gt; &lt;local:BoolToCursorConverter x:Key="CursorConverter" /&gt; &lt;/UserControl.Resources &gt; &lt;Grid Cursor="{Binding IsLoading, Converter={StaticResource CursorConverter}}"&gt; &lt;!-- Contents here --&gt; &lt;/Grid&gt; &lt;/UserControl&gt; </code></pre> <p>would at least not fail in finding the converter.</p> <p><strong>What you actually need to do</strong></p> <p>I've presented the above to answer your question but I can see it doesn't really help you. You can't bind to the Cursor property like this. (It doesn't expose a public identifier field, Xaml uses the <em>NameOfThing</em> + "Property" convention to find a field that is the <code>DependencyProperty</code> for the property being bound).</p> <p>The solution is to create an Attached property:-</p> <pre><code>public class BoolCursorBinder { public static bool GetBindTarget(DependencyObject obj) { return (bool)obj.GetValue(BindTargetProperty); } public static void SetBindTarget(DependencyObject obj, bool value) { obj.SetValue(BindTargetProperty, value); } public static readonly DependencyProperty BindTargetProperty = DependencyProperty.RegisterAttached("BindTarget", typeof(bool), typeof(BoolCursorBinder), new PropertyMetadata(false, OnBindTargetChanged)); private static void OnBindTargetChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e) { FrameworkElement element = sender as FrameworkElement; if (element != null) { element.Cursor = (bool)e.NewValue ? Cursors.Wait : Cursors.Arrow; } } } </code></pre> <p>Now you can actually do the binding like this:-</p> <pre><code> &lt;Grid local:BoolCursorBinder.BindTarget="{Binding IsLoading}"&gt; </code></pre>
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    1. POHow to Bind the Cursor property of a Grid to a Property of my ViewModel in Silverlight 3.0?
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    1. USAnthonyWJones
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    1. POHow to Bind the Cursor property of a Grid to a Property of my ViewModel in Silverlight 3.0?
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    1. COWorked like a charm, thanks!!
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    2. COAnd thanks for the great explanation too
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