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1812 XAML Add new event handler failes

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HBTeun
Senior Member

33 Posts

Posted - Feb 22 2010 : 04:48:34 AM

When I want to add a event handler to a control in XAML (in the WPF/Silverlight editor). The first time the list box opens I get the option to create a new event handler, but it only enters the following string between quotes: "operator<New Event Handler>" and does not add the event handler to code behind. The second time that option is not shown only the already existing event handlers in the code behind are shown.

When I disable VAX it works as it should be.

I use version 1812 in VS2010 RC.

accord
Whole Tomato Software

United Kingdom
3287 Posts

Posted - Feb 24 2010 : 3:49:20 PM

I am seeing the same effect here:

case=40179

I was able to reproduce this via using a button:

1. Placed a button on the "form" or whatever it is called

so I got button1
2. I wrote button1.Click +=
and got this with Visual Assist disabled


            button1.Click += new RoutedEventHandler(button1_Click);

and a new function


        void button1_Click(object sender, RoutedEventArgs e)
        {
            throw new NotImplementedException();
        }

With Visual Assist enabled I got


            button1.Click += new button1.Click

This is a good start. But can you please explain what handler did you use? (by step-by-step please, since I am not a WPF expert

)
I will add your steps to the bug report as an additional test case, just for sure.

Edited by - accord on Feb 24 2010 3:58:32 PM

HBTeun
Senior Member

33 Posts

Posted - Feb 24 2010 : 5:05:23 PM

Place a button inside the Grid:
<Grid x:Name="LayoutRoot" Background="White">
<Button />
</Grid>

Add a Click event: (with VAX On)
<Grid x:Name="LayoutRoot" Background="White">
<Button Click="operator<New Event Handler>" />
</Grid>
In the listbox the following option is displayed:
operator<New Event Handler>

(With VAX disabled)
<Grid x:Name="LayoutRoot" Background="White">
<Button Click="Button_Click" />
</Grid>
and in code-behind an event handler is created.

Listbox with VAX Disabled:

Listbox with VAX Enabled: (had to press ctrl)

BTW, had not discovered it also happen in code-behind. :)
So both use cases work to display the error.

Also if there is already a handler in the code-behind it is listed in the listbox and you can use it as the handler (this is correct behavior). But the option to create a new handler still goes wrong.

Edited by - HBTeun on Feb 24 2010 5:30:59 PM

accord
Whole Tomato Software

United Kingdom
3287 Posts

Posted - Feb 28 2010 : 7:46:54 PM

I have put in a separate bug report for this:

case=40335

and mentioned the original one. Now, I tried this in the XAML file and I was seeing a similar problem there.
Thank you for the clear description

HBTeun
Senior Member

33 Posts

Posted - Mar 11 2010 : 09:25:30 AM

I noticed the same happening when adding new namespaces in the XAML file.

To reproduce:
1. Start new silverlight project and name it for example "Test".
2. In the mainpage XAML file and type the following:

xmlns:local=

3. At this point a dropdown listbox is opened with the possible namespaces. Choose "Test (Test)" and press Tab.
The following line is produced:

xmlns:local="Test (Test)"

It should be:

xmlns:local="clr-namespace:Test"

Pressing enter does insert the correct string.

accord
Whole Tomato Software

United Kingdom
3287 Posts

Posted - Mar 11 2010 : 4:30:28 PM

I may write this to an incorrect place, but got this: