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POCaliburn Micro 'Enter' Key Event
 

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  1. POCaliburn Micro 'Enter' Key Event
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    <p>I am attempting to bind an event with Caliburn Micro and I am having some issues getting the right messages to the method. I would like to add the ability to press the 'Enter' key after changing the value in a text box and it execute the same method that the button next to is bound to. However, regardless of which key is pressed, I get the following exceptions: </p> <blockquote> <p>A first chance exception of type 'System.InvalidCastException' occurred in MyApp.exe</p> <p>A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll</p> <p>A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in WindowsBase.dll</p> </blockquote> <p>At the suggestion of another, similar question <a href="https://stackoverflow.com/questions/12714727/binding-keydown-event-silverlight">Binding KeyDown Event Silverlight</a>, I've tried using ActionExecutionContext, but to no avail.</p> <p>Here is the xaml:</p> <pre><code>&lt;TextBox Name="Threshold" Margin="5" Grid.Column="1" &gt; &lt;i:Interaction.Triggers&gt; &lt;i:EventTrigger EventName="KeyDown"&gt; &lt;cal:ActionMessage MethodName="ExecuteFilterView"&gt; &lt;cal:Parameter Value="$executionContext"/&gt; &lt;/cal:ActionMessage&gt; &lt;/i:EventTrigger&gt; &lt;/i:Interaction.Triggers&gt; &lt;/TextBox&gt; </code></pre> <p>And the method:</p> <pre><code> public void ExecuteFilterView(ActionExecutionContext context) { //Do stuff... } </code></pre> <p>I understand that I could probably save myself some headaches and simply do a standard event handler in the code behind, but this app is an exercise in MVVM and learning to utilize Caliburn.Micro, so I would like to stick with making this particular approach work.</p> <p>Am I just trying to send the wrong information from the event? Is my xaml not coded properly to get what I want? Or I have missed something else entirely?</p>
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