Bug 58922 - OnIdiom fails for x:Double
Summary: OnIdiom fails for x:Double
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 2.3.5
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Stephane Delcroix
: 60283 60452 ()
Depends on:
Reported: 2017-08-21 10:51 UTC by Michael Rumpler
Modified: 2018-03-05 15:56 UTC (History)
9 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Michael Rumpler 2017-08-21 10:51:13 UTC
I have this code in my app.xaml:

	<x:Double x:Key="IconColumnWidth">
		<OnIdiom x:TypeArguments="x:Double" Phone="30" Tablet="40" />

This worked totally fine in XF 2.3.4 but with 2.3.5 or later I get

    Can not set the content of x:Double as it doesn't have a ContentPropertyAttribute

I do use XamlC and get this as a compile error.

Comment 2 Michael Rumpler 2017-08-22 08:07:28 UTC
I rewrote it as

    <OnIdiom x:Key="IconColumnWidth" x:TypeArguments="x:Double" Phone="30" Tablet="40" />

This seems to work also with the newest versions.
Comment 3 Mirko Da Corte 2017-08-25 13:09:30 UTC
I'm trying to set Grid.HeightRequest value and I receive this compile error:

"No property, bindable property, or event found for 'HeightRequest', or mismatching type between value and property."

The code:
		<OnIdiom x:TypeArguments="x:Double"
				 Tablet="480" />

I get this exception also with other cases, also with OnPlatform in Xaml.

It's thrown with x:Double, x:Boolean and ImageSource passing strings. It worked before
Comment 4 Mirko Da Corte 2017-08-26 01:05:57 UTC
Errata: issue in my case is only for x:Double and x:Boolean types. ImageSource was an other issue in my code.
Comment 5 Stephane Delcroix 2017-09-04 10:07:37 UTC
@Michael: this used to work, but no longer does, just like it is for OnPlatform. Your workaround is the correct one, sorry for the inconvenience.

@Mirko: I can't reproduce your issue, and even added a unit-test for it (that's passing) https://github.com/xamarin/Xamarin.Forms/commit/110a1355900ffec5977fcb6684ee9ba7311ec2dd
Comment 6 Paul DiPietro [MSFT] 2017-10-20 00:43:33 UTC
*** Bug 60283 has been marked as a duplicate of this bug. ***
Comment 7 safakoktem 2017-10-20 02:04:11 UTC
@Michael how exactly did you solved? 

I tried the following codes in my project but no lucky

                <OnIdiom x:Key="WidthRequest" x:TypeArguments="x:Double" Phone="60" Tablet="200" Desktop="200"/>

Comment 8 Michael Rumpler 2017-10-20 06:11:24 UTC
As I wrote in Comment 2, I removed the <x:Double> element. You already use the notation which works for me.

You seem to have the same problem as Mirko. Maybe you file a separate bug with your issue. Please also add a repro project as Stephane could not reproduce it.
Comment 9 harel123 2017-11-05 10:00:09 UTC
I am also experiencing a similar issue. Filed a bug report here: https://bugzilla.xamarin.com/show_bug.cgi?id=60452 that maybe can be considered a duplicate of this one
Comment 10 harel123 2017-11-05 10:00:51 UTC
Any solution I could find on this bug report didn't solve my issue.
Comment 11 Paul DiPietro [MSFT] 2017-11-17 18:30:07 UTC
*** Bug 60452 has been marked as a duplicate of this bug. ***
Comment 12 Paul DiPietro [MSFT] 2017-11-19 14:57:37 UTC
*** Bug 60757 has been marked as a duplicate of this bug. ***
Comment 13 harel123 2017-11-20 08:27:44 UTC
I suggest changing the status to something else and not RESOLVED ANSWERED since I am experiencing a similar issue and none of the replies on this bug report helped me solve it.
Comment 14 Stephane Delcroix 2017-11-20 10:31:11 UTC
please test again against 2.5 or our nightly. We have a unit test for that https://github.com/xamarin/Xamarin.Forms/commit/110a1355900ffec5977fcb6684ee9ba7311ec2dd and it passes
Comment 15 harel123 2017-11-20 12:49:41 UTC
I tested with Xamarin.Forms , results seem to be the same - the issue is still there for me. I would also like to point out that I'm using dot NET Standard 2.0 and not PCL.
Comment 16 Stephane Delcroix 2017-11-20 13:42:28 UTC
@harel123: please reopen your original ticket as soon as you have a repro project you can attach, as requested by https://bugzilla.xamarin.com/show_bug.cgi?id=60452#c2
Comment 17 Ian 2017-12-04 19:20:59 UTC
Just to chime in. I get the same error after moving from PCL to .NET Standard 2

I use Forms

For me it's:

                            <OnIdiom x:TypeArguments="x:Double"
                                     Tablet="36" />

However, if I remove that, then it's another setting and so on.

Unable to build.
Comment 18 Leo 2017-12-07 16:12:27 UTC
Ian, try to just remove the 'x:TypeArguments="x:Double"'. It worked for me.
Comment 19 Leo 2017-12-07 16:15:41 UTC
Forget about it, it just changed the error message... this is getting really frustrating :/
Comment 20 Paul DiPietro [MSFT] 2018-03-05 15:56:49 UTC
*** Bug 60452 has been marked as a duplicate of this bug. ***