Bug 34521 - Relative layout add child ambiguious call error
Summary: Relative layout add child ambiguious call error
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 1.5.0
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2015-10-02 09:57 UTC by FieldstrikeMobile
Modified: 2016-05-06 10:31 UTC (History)
5 users (show)

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

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Description FieldstrikeMobile 2015-10-02 09:57:16 UTC
Adding a child to a relative layout in code causes an ambiguous call error:

            Grid helpBar = new Grid()
            _layout = new RelativeLayout
                VerticalOptions = LayoutOptions.FillAndExpand,
                HorizontalOptions = LayoutOptions.FillAndExpand


Error	27	The call is ambiguous between the following methods or properties: 'Xamarin.Forms.RelativeLayout.IRelativeList<Xamarin.Forms.View>.Add(Xamarin.Forms.View, Xamarin.Forms.Constraint, Xamarin.Forms.Constraint, Xamarin.Forms.Constraint, Xamarin.Forms.Constraint)' and 'Xamarin.Forms.RelativeLayout.IRelativeList<Xamarin.Forms.View>.Add(Xamarin.Forms.View, System.Linq.Expressions.Expression<System.Func<double>>, System.Linq.Expressions.Expression<System.Func<double>>, System.Linq.Expressions.Expression<System.Func<double>>, System.Linq.Expressions.Expression<System.Func<double>>)'	D:\tfs\FieldStrike\FieldStrikeMove\FieldStrikeMove.Forms\CustomControls\HelpContentPage.cs	31	13	FieldStrikeMove.Forms

Caused because of the two methods:

  void Add(T view, Constraint xConstraint = null, Constraint yConstraint = null, Constraint widthConstraint = null, Constraint heightConstraint = null);
            void Add(T view, Expression<Func<double>> x = null, Expression<Func<double>> y = null, Expression<Func<double>> width = null, Expression<Func<double>> height = null);
Comment 1 Jason Smith [MSFT] 2016-04-13 19:37:46 UTC
Thank you for your report. At this time there are no plans to implement any changes around this issue.

Warm regards,
Xamarin Forms Team
Comment 2 C64Gamer 2016-05-06 10:31:27 UTC
Having the same problem?

Button btn = new Button ();
btn.Text = "Debug Test";
btn.BackgroundColor = Color.Red;

RelativeLayout layout = companyRepro;

Error CS0121: The call is ambiguous between the following methods or properties: `Xamarin.Forms.RelativeLayout.IRelativeList<Xamarin.Forms.View>.Add(Xamarin.Forms.View, System.Linq.Expressions.Expression<System.Func<double>>, System.Linq.Expressions.Expression<System.Func<double>>, System.Linq.Expressions.Expression<System.Func<double>>, System.Linq.Expressions.Expression<System.Func<double>>)' and `Xamarin.Forms.RelativeLayout.IRelativeList<Xamarin.Forms.View>.Add(Xamarin.Forms.View, Xamarin.Forms.Constraint, Xamarin.Forms.Constraint, Xamarin.Forms.Constraint, Xamarin.Forms.Constraint)'

Is there a workaround? Don't want to rewrite my whole layout.