Bug 37157 - xamarin incorrectly tries to compile custom extended controls as belonging to xamarin forms only in xamarin 2
Summary: xamarin incorrectly tries to compile custom extended controls as belonging to...
Status: RESOLVED ANSWERED
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 2.0.0
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Stephane Delcroix
URL:
Depends on:
Blocks:
 
Reported: 2015-12-18 21:10 UTC by steve hawkins
Modified: 2016-01-05 10:38 UTC (History)
6 users (show)

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


Attachments
sample project that reproduced the rror (3.80 MB, application/x-rar)
2015-12-18 21:13 UTC, steve hawkins
Details


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RESOLVED ANSWERED

Description steve hawkins 2015-12-18 21:10:25 UTC
This scenario has been working perfectly fine in xamarin forms 1.3 and 1.4. Upgraded all packages, cleared down caches and moved to xamarin 2 and get error in some of my custom cotrols that inherit from base xamarin forms class. 

shared solution project. 

example of one of the errors:
The type or namespace name 'LSearchBar' does not exist in the namespace 'Xamarin.Forms' (are you missing an assembly reference?)	

The components are created via this inheritrix chain.
 
1) EsearchBar [inherits from] LSeachbar [Inherit from] Absolute layout (xamarin)

2) SCell [inherits from] ErrViewCell [Inherits from] ViewCell (xxamarin)

The compile see the custom xaml controls components LSearchBar and ErrViewCell as ebing part of the xamarin framework and not the custom control class. I've tried adding in the fully qualified class paths in the inheritance chain as well and got the same error.

I've The solution i'm adding was a new solution create that mimiks the real app and it produced the same errors.
Comment 1 steve hawkins 2015-12-18 21:13:00 UTC
Created attachment 14352 [details]
sample project that reproduced  the rror
Comment 2 John Miller [MSFT] 2015-12-21 18:10:42 UTC
@Steve,

Each custom control will need to have the namespace defined: 

> xmlns:controls="clr-namespace:XamlError.controls;assembly=XamlError"

Then, change the controls to inherit from that: 

<controls:LSearchBar 
..../>

Note* Added the controls: prefix for the namespace.