Failed to assign to property when adding new ApplicationBarMenuItem icon

问题

I've added a new ApplicationBarMenu button with icon to a page in my wp7 project. when trying to run the page i get :

Failed to assign to property 'Microsoft.Phone.Shell.ApplicationBarIconButton.Click'. [Line: 56 Position: 124]

Which points to the new menu item button i have added (the second one, send_report_button ):

<phone:PhoneApplicationPage.ApplicationBar>
    <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
        <shell:ApplicationBarIconButton x:Name="take_photo_button" IconUri="/Images/appbar.feature.camera.rest.png" Text="Take photo" Click="TakePhotoClick" />
        <shell:ApplicationBarIconButton x:Name="send_report_button" IconUri="/Images/mail.sent.png" Text="Send report" Click="SendReportClick" />
        <shell:ApplicationBarIconButton x:Name="logout_button" IconUri="/Images/appbar.logout.rest.png" Text="Logout"/>
        <shell:ApplicationBar.MenuItems>
            <!--<shell:ApplicationBarMenuItem x:Name="menuItem1" Text="MenuItem 1"/>
            <shell:ApplicationBarMenuItem x:Name="menuItem2" Text="MenuItem 2"/>-->
        </shell:ApplicationBar.MenuItems>
    </shell:ApplicationBar>
</phone:PhoneApplicationPage.ApplicationBar>

I have checked ten times that i have a method in the .xaml.cs :

private void SendReportClick(object sender, RoutedEventArgs e)

But still, VS doesnt seem to recognize it, or something else is wrong.

Thanks

回答1:

The problem is in the event handler signature. You have RoutedEventArgs as the second parameter. It should just be EventArgs.

Here is an explanation. Don't forget that the app bar is a shell object.

来源：https://stackoverflow.com/questions/10339685/failed-to-assign-to-property-when-adding-new-applicationbarmenuitem-icon