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POBinding to a method in DataContext
 

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    <p>Is it possible to use a method of the DataContext in a binding?</p> <p>E.g. the signature <code>public bool ProjectIsActive(int number)</code> [note: not static], can it be declared in a binding?</p> <p>EDIT: Following the suggestion of ywm and Sheridan I tried adding a resource to my Window with name _this.<br> I changed the signature to <code>public bool ProjectIsActive(object number)</code>.</p> <pre><code>&lt;Window.Resources&gt; &lt;ObjectDataProvider x:Key="ProjectIsActive" ObjectInstance="_this.DataContext" MethodName="ProjectIsActive"&gt; &lt;ObjectDataProvider.MethodParameters&gt; &lt;sys:Object&gt;&lt;/sys:Object&gt; &lt;/ObjectDataProvider.MethodParameters&gt; &lt;/ObjectDataProvider&gt; &lt;/Window.Resources&gt; </code></pre> <p>Then the Binding of the Trigger is set as:</p> <pre><code>&lt;Binding Source="{StaticResource ProjectIsActive}" Path="MethodParameters[0]" BindsDirectlyToSource="true" /&gt; </code></pre> <p>It gives the error: <em>System.Windows.Data Error: 35 : ObjectDataProvider: Failure trying to invoke method on type; Method='ProjectIsActive'; Type='String'; Error='No method was found with matching parameter signature.' MissingMethodException:'System.MissingMethodException: Method 'System.String.ProjectIsActive' not found. at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams) at System.Windows.Data.ObjectDataProvider.InvokeMethodOnInstance(Exception&amp; e)'</em></p> <p>The method signature of ObjectDataProvider.MethodParameters doesn't distinghuish return value from input paramter, I don't know how to proceed.</p> <p>NOTE: The objective can be also achieved by using a MultiValueConverter and casting in the Convert method etc. I was only curious because binding to a property is so easy, and binding to a method [in my case] so difficult. There are also still better ways to avoid a call to a method.</p>
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