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WPF: Get Canvas.Left and Top Attached Properties

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Lorenz
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Lorenz asked on 08 Dec 2014, 01:35 PM
Hi,

I have a requirement where I have to test the position of different Elements.
This position is set in our application using a Parent Cancas as container. Then our custom user controls are placed using Cancas attached properties: "Top" and "Left".

In our test scenario we tried to retrieve this value withe the following code:

var left = userControl.GetAttachedProperty<double>("Canvas", "Left");<br>var top = userControl.GetAttachedProperty<double>("Canvas", "Top");

But this code throw an exception:
[WPF Extension Error] Details: ArtOfTest.WebAii.Silverlight.NoSuchPropertyException: Unable to find attached property owner class 'Canvas'
   bei Telerik.TestingFramework.XamlExtension.ClientServices.GetAttachedPropertyValue(AutomationProperty property, Object obj)
   bei Telerik.TestingFramework.XamlExtension.ClientServices.GetRealProperty(AutomationReference reference, AutomationProperty property)
   bei Telerik.TestingFramework.XamlExtension.ClientProcessor.ProcessCommand(String command)

Do I do something wrong? Is there a way to test the position of UI elements ?

Thanks.
Benoît

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Lorenz
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answered on 08 Dec 2014, 03:20 PM
I think it's possible to use the GetRectangle method by passing the relativeTo element (here it will be my canvas container).

This is not optimal in my case but I could be a workaround. If anybody knows a way to retrieve the Canvas.Left and Canvas.Top properties, please let know.

Thanks.
Benoît
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Boyan Boev
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answered on 11 Dec 2014, 09:44 AM
Hi Benoit,

Your code looks correct. Could you please give us some demo or access to your application so we can try to reproduce the issue and give you a solution.

Also please double check that the property is of type double.

Hope to hear from you soon.

Regards,
Boyan Boev
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Lorenz
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answered on 18 Dec 2014, 04:00 PM
Hi Boyan,

Please find attached a VS solution containing a small WPF application, and some UI Automation tests (in UiAutomationTest.cs):
  • When_RetrieveCanvasAttachedProperties
Thanks,
Benoît
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Boyan Boev
Telerik team
answered on 23 Dec 2014, 02:10 PM
Hi Benoit,

Thank you again for the sample.

You should use this syntax for the canvas:

var left = textblock.GetAttachedProperty<double>("System.Windows.Controls.Canvas", "Left");

Let me know if this helps.

Regards,
Boyan Boev
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Lorenz
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answered on 05 Jan 2015, 02:03 PM
Hi Boyan,

Sorry for my late feedback.
Good news, it works with your syntax!

Kind regards,
Benoît
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Boyan Boev
Telerik team
answered on 06 Jan 2015, 08:07 AM
Hello Benoit, 

Glad to hear that.

If you need further help please let us know.

Regards,
Boyan Boev
Telerik
 
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Boyan Boev
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