System.ArgumentOutOfRangeException

[Mustafa-ah]

Steps: 1- Install-Package Naxam.TopTabbedPage.Forms 2-create page with binding source

<?xml version="1.0" encoding="utf-8"?>
    <forms:TopTabbedPage
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    x:Class="TestTabs.MainPage"
    xmlns:views="clr-namespace:TestTabs"
    xmlns:forms="clr-namespace:Naxam.Controls.Forms;assembly=Naxam.TopTabbedPage.Forms"
    BarTextColor="#00b9e1"
    BarIndicatorColor="#00b9e1"
    BarBackgroundColor="#ffffff"
    ItemsSource="{Binding DashboardChildModels}"
    Title="MyRide">
        <forms:TopTabbedPage.ItemTemplate>
        <DataTemplate>
            <views:ChildPage Title="title"/>
        </DataTemplate>
    </forms:TopTabbedPage.ItemTemplate>
</forms:TopTabbedPage>

3- leave the collection empty

public class DashViewModel
    {
        public DashViewModel()
        {
            DashboardChildModels = new ObservableCollection<ChildPage>();

        }

        private ObservableCollection<ChildPage> _dashboardChildModels;
        public ObservableCollection<ChildPage> DashboardChildModels
        {
            get
            {

                return _dashboardChildModels;
            }
            set { _dashboardChildModels = value; }
        }

    }

---

Expected behavior : App run and display no tabs

Actual behavior : App crash

Exception message : System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: index at System.Array.InternalArray__get_Item[T] (System.Int32 index) [0x00009] in /Users/builder/jenkins/workspace/xamarin-macios/xamarin-macios/external/mono/mcs/class/corlib/System/Array.cs:190 at at (wrapper managed-to-managed) UIKit.UIViewController[].System.Collections.Generic.IList`1.get_Item(int) at Naxam.Controls.Platform.iOS.TopTabbedRenderer.ViewDidLoad () [0x00141] in <1f6b2b7c8f6c4ec4b46e787d64141cd6>:0 at at (wrapper managed-to-native) ObjCRuntime.Messaging.IntPtr_objc_msgSendSuper(intptr,intptr) at UIKit.UIViewController.get_View () [0x0002a] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/UIViewController.g.cs:3171 at Naxam.Controls.Platform.iOS.TopTabbedRenderer.get_NativeView () [0x00000] in <1f6b2b7c8f6c4ec4b46e787d64141cd6>:0 at Naxam.Controls.Platform.iOS.TopTabbedRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00059] in <1f6b2b7c8f6c4ec4b46e787d64141cd6>:0 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00014] in :0 at Xamarin.Forms.Platform.iOS.Platform.AddChild (Xamarin.Forms.VisualElement view) [0x00027] in :0 at Xamarin.Forms.Platform.iOS.Platform.WillAppear () [0x00043] in :0 at Xamarin.Forms.Platform.iOS.PlatformRenderer.ViewWillAppear (System.Boolean animated) [0x00016] in :0 at at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSend(intptr,intptr) at UIKit.UIWindow.MakeKeyAndVisible () [0x0000d] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/UIWindow.g.cs:281 at Xamarin.Forms.Platform.iOS.FormsApplicationDelegate.SetMainPage () [0x0000c] in :0 at Xamarin.Forms.Platform.iOS.FormsApplicationDelegate.FinishedLaunching (UIKit.UIApplication uiApplication, Foundation.NSDictionary launchOptions) [0x00030] in :0 at TestTabs.iOS.AppDelegate.FinishedLaunching (UIKit.UIApplication app, Foundation.NSDictionary options) [0x00019] in /Users/Mustafa/Projects/TestTabs/TestTabs.iOS/AppDelegate.cs:29 at at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr) at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/UIKit/UIApplication.cs:86 at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0000e] in /Library/Frameworks/Xamarin.iOS.framework/Versions/13.4.0.2/src/Xamarin.iOS/UIKit/UIApplication.cs:65 at TestTabs.iOS.Application.Main (System.String[] args) [0x00001] in /Users/Mustafa/Projects/TestTabs/TestTabs.iOS/Main.cs:17