I'm having crashing issues when clicking on a button that navigates while the soft keyboard is up on android and iOS devices. Is there a common library in Xamarin Forms that can be accessed to see if the soft keyboard is currently up or not?

Hi,
I want to create custom toolbar like this in xamarin forms

how to create?

Is there any way to remove the separator beneath the ListView group headers?

I'm not doing anything special in the DataTemplate.

  <ListView.GroupHeaderTemplate>
    <DataTemplate>
      <ViewCell 
        Height="45">
        <StackLayout
          BackgroundColor="White"
          VerticalOptions="FillAndExpand"
          HorizontalOptions="FillAndExpand">
          <StackLayout
            VerticalOptions="CenterAndExpand"
            Margin="15, 0, 5, 0">
            <Label
              Text="{Binding LongName}" />
          </StackLayout>
        </StackLayout>
      </ViewCell>
    </DataTemplate>
  </ListView.GroupHeaderTemplate>

In Xamarin.Forms, I want to convert my xaml page UI (sometimes my page is scrollable when having more content) into the PDF. I have tried the PDFSharp open source. But it works only on UWP and having some issues in iOS and Android.

So is there any free open source plugin available to convert XAML UI into PDF in all three platforms? If open source not available, is there any other way or work around to achieve it?

Thanks in advance.

i need to store the data locally so that it can be accessible for the next viewmodel.

With SQLite i should store or save data locally and get that stored data.. Here Im getting data from Api using MVVM Binding

Hi,
I'm just wondering has anyone any experience in having to store things like a URL to a REST API etc that your app is dependent on?
I've been investigating what is the best practice for this scenario and coming from a web background with web.config in mind I'm not seeing anything definite other than just in a class which seems a bit ad-hoc.
Would love to hear what ye're thoughts are on this as I'm just looking for the best practice.

Hi,

Please suggest any method to implement rounded corner frame without using custom renderers.

Thanks & Regards,
Kavya

Hi,

I am currently testing one of my company's applications with some older devices to checkout if everything is working correctly and I have an issue with the Entry's width. I am not sure if it's a bug or if I am just missing something here so I decided to post on this forum instead of doing so into the Xamarim.Forms repository.

The issue is that if I entirely fill the control with more letters that it could contain, tap on the back button and come back to the same page, the Entry's width would increase to go beyond the screen's limitation. I reproduced the issue into a sample that you could find into this next link:

github.com/toussam/HorizontalStackLayoutIssueSample

The Entry is wrapped into a StackLayout that is set with the Orientation property as Horizontal and if I remove this last one, everything would work properly, but I really need to set it in such way since into our application there is also other elements into the StackLayout and all of them need to be display horizontally.

Here is also two screenshots to illustrate the issue:

Before
us.v-cdn.net/5019960/uploads/editor/kr/c3bcop4x2h29.png

After
us.v-cdn.net/5019960/uploads/editor/6d/34h1062c50kz.png

Is there anyone that could help me with this issue ?

I thank you in advance for everything and wish you a great week !
Best regards,
mtwsm

P.S.: I can't post links so I had to cut the urls' beginning.

As we continue to release performance focused features and fixes, and build processes around performance, I want to have a thread dedicated to those items.

Our public roadmap itemizes the feature work we are doing and planning to do, and items related to performance are tagged. In addition to that, we are building into our CI processes ways to measure and compare performance metrics. The goal is that with specific commits and builds we can get visibility to any impact on speed and memory usage.

One of the initiatives I'm spearheading is to populate a solution with UIs that are representative of your applications. To that end, I'm asking you to consider sharing those layouts with us. Perhaps the best way to gather them would be to open a repository and have you submit pull requests. I'll get working on that next and post details here.

Fast Renderers for Android are now merged and in nightly and will be our next pre-release. I hope some of you will take some time to test them out and report back here with your findings.

How to show listview inside carouselview in xamarin forms

I use Xamarin Forms.
But I don't know about XAML yet.

1) What is different between * and auto on XAML?
2) I wrote code like this. but Image viewed on emul6.0 not viewed on emul7.0. have I wrong?

 <ContentPage.Content>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="10" />
                <RowDefinition Height="35" />
                <RowDefinition Height="*" />
                <RowDefinition Height="40" />
                <RowDefinition Height="Auto" />
                <RowDefinition Height="10" />
                <RowDefinition Height="60" />
                <RowDefinition Height="60" />
                <RowDefinition Height="40" />
                <RowDefinition Height="60" />
            </Grid.RowDefinitions>
            <Label Text="Setting" 
                   TextColor="White" 
                   BackgroundColor="#B1244F" 
                   HorizontalOptions="Fill" 
                   VerticalOptions="Fill"
                   HorizontalTextAlignment="Center" 
                   VerticalTextAlignment="Center" 
                   Grid.Row="1"></Label>

            <ContentView 
                     Grid.Row="2" 
                     Margin="10"
                     Padding="40"
                     HorizontalOptions="Fill"
                     VerticalOptions="CenterAndExpand">
                <Image x:Name="imgLogo"   />
            </ContentView>


            <Label Text="Login" 
                   TextColor="Gray" 
                   HorizontalTextAlignment="Center" 
                   Grid.Row="4"></Label>



            <Frame HeightRequest="30" WidthRequest="30" CornerRadius="15" 
                   HorizontalOptions="Center" 
                   VerticalOptions="Center" Margin="0" Padding="0" 
                       BackgroundColor="#B1244F" Grid.Row="3" >
                <Label Text="1" TextColor="White" HorizontalOptions="Center" VerticalOptions="Center" 
                        HorizontalTextAlignment="Center" VerticalTextAlignment="Center"></Label>
            </Frame >

            <BoxView Color="WhiteSmoke"
             WidthRequest="300"
             VerticalOptions="Fill" 
             HorizontalOptions="Center" 
                     Margin="5"
             Grid.Row="6" ></BoxView>


            <BoxView Color="WhiteSmoke"
             WidthRequest="300"
             VerticalOptions="Fill" 
             HorizontalOptions="Center" 
                     Margin="5"
             Grid.Row="7" ></BoxView>


            <!--
            <Frame Grid.Row="7"
            CornerRadius="5"
                    Margin="5"
            BackgroundColor="WhiteSmoke">

                <Label
                WidthRequest="40"
                HeightRequest="40"
                VerticalTextAlignment="Center"
                HorizontalTextAlignment="Center"
                Text="U">   
                </Label>
            </Frame>-->

            <Button Text="Next" 
                    BackgroundColor="#B1244F"
                    BorderRadius="0"
                    TextColor="White"
                    HorizontalOptions="Fill"
                    VerticalOptions="Fill"
                    Grid.Row="9"/>

        </Grid>
    </ContentPage.Content>

I'm writing a custom layout extending StackLayout and there is an exception getting thrown from inside xamarin forms code. I can't step into any forms code when debugging however as there are no symbols (I can read the code with dotPeek at least). I don't see any symbols on symbolsource, are they not available at all or are they available for business / enterprise customers (I'm on a trial right now)?

Webview is trimming the content when loaded in ios(iphone) it is working fine with the ipad.

Dear Mates,

I have 5 years of experience in analysis, design and development of Web and Windows and Mobile based n-tier applications using Microsoft .Net technology.
Programming and Build Technology

• Xamarin Studio ,WCF,Entity Framework, Web API.
• ASP.Net ,MVC 4,5, C#.Net, VB.Net, XML, LINQ
• Geo location, Geo fencing,
• Facebook,Twitter,Instagram,Google+ integration
• Work On .Net Framework 3.5,4.0,4.5

i delivered more than 100 projects successfully.

You can reach me on Skype: cisin.justin or Email:jutindotc@talentsfromindiadotcom

Thanks,
Justin
+14074139057

Webview is trimming the content when loaded in ios(iphone) it is working fine with the ipad.

My app is a Xamarin.Forms app, though this post is specific to Xamarin.Forms.iOS.

I'm having a hard time determining where to go with this one, primarily because I'm unable to determine what exactly is failing when I choose "Link Framework SDKs only".

The problem is happening with a call made somewhere inside the Q42.HueApi nuget library. This is a library that controls the Philips Hue lighting system. Most calls succeed - but a couple key calls don't work unless "Don't Link" is set.

I actually have no problem building with "Don't Link" set, but it causes issues with the App Store. The automated submission process detects every possible usage description that could be used by any of my package references. I've found people with similar issues who say you can just add the usage descriptions in Info.plist and as long as you don't actually request the given resource, nobody is any the wiser. I'd like to avoid having to do this, but it's not a showstopper.

The showstopper for me is "Missing Push Notification Entitlement". I don't use Push Notifications and just don't want to add this Entitlement.

This is the stack trace from the failing call (works fine with "Don't Link" however):

System.ArgumentNullException: Value cannot be null.
Parameter name: method
at System.Linq.Expressions.Expression.Call (System.Linq.Expressions.Expression instance, System.Reflection.MethodInfo method, System.Collections.Generic.IEnumerable1[T] arguments) [0x00111] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/MethodCallExpression.cs:1239 at System.Linq.Expressions.Expression.Call (System.Linq.Expressions.Expression instance, System.Reflection.MethodInfo method, System.Linq.Expressions.Expression[] arguments) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/MethodCallExpression.cs:1046 at System.Linq.Expressions.Expression.Call (System.Reflection.MethodInfo method, System.Linq.Expressions.Expression[] arguments) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/MethodCallExpression.cs:1001 at System.Dynamic.ExpandoObject+MetaExpando.BindSetMember (System.Dynamic.SetMemberBinder binder, System.Dynamic.DynamicMetaObject value) [0x00033] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Dynamic/ExpandoObject.cs:863 at System.Dynamic.SetMemberBinder.Bind (System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args) [0x00035] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Dynamic/SetMemberBinder.cs:57 at System.Dynamic.DynamicMetaObjectBinder.Bind (System.Object[] args, System.Collections.ObjectModel.ReadOnlyCollection1[T] parameters, System.Linq.Expressions.LabelTarget returnLabel) [0x000c6] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Dynamic/DynamicMetaObjectBinder.cs:90
at System.Runtime.CompilerServices.CallSiteBinder.BindCore[T] (System.Runtime.CompilerServices.CallSite1[T] site, System.Object[] args) [0x00019] in <4b284bfdf0034973b11698729c2d63bc>:0 at System.Runtime.CompilerServices.CallSiteOps.Bind[T] (System.Runtime.CompilerServices.CallSiteBinder binder, System.Runtime.CompilerServices.CallSite1[T] site, System.Object[] args) [0x00000] in <4b284bfdf0034973b11698729c2d63bc>:0
at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00032] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:305
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Exception source) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:156
at System.Linq.Expressions.Interpreter.ExceptionHelpers.UnwrapAndRethrow (System.Reflection.TargetInvocationException exception) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/Utilities.cs:172
at System.Linq.Expressions.Interpreter.MethodInfoCallInstruction.Run (System.Linq.Expressions.Interpreter.InterpretedFrame frame) [0x00035] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/CallInstruction.cs:327
at System.Linq.Expressions.Interpreter.Interpreter.Run (System.Linq.Expressions.Interpreter.InterpretedFrame frame) [0x00015] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/Interpreter.cs:63
at System.Linq.Expressions.Interpreter.LightLambda.Run3[T0,T1,T2,TRet] (T0 arg0, T1 arg1, T2 arg2) [0x00038] in <4b284bfdf0034973b11698729c2d63bc>:0
at Q42.HueApi.HueClient+d__15.MoveNext () [0x000b5] in :0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in <0f7865fc4fbb4fddaab6f86c915ebae0>:0
at Q42.HueApi.Streaming.StreamingHueClient+d__12.MoveNext () [0x00091] in <88e6e7daf100469d84c7f4213d723d5e>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113
at MYAPP.ApplicationState+d__63.MoveNext () [0x000a3] in MYAPP\ApplicationState.cs:182

What options do I have here?

Thanks!

Hi,

I'm using a custom FrameRenderer in my UWP project to style frames (corner radius and color). When I scroll a bit back and forth, the app crashes with a System.ArgumentException: Value does not fall within the expected range. It's the call to base.OnElementChanged(e); that causes it.

I can of course put that in a try/catch, but then some items in my list will disappear. They return on orientation change of the device, but not after a normal refresh of the FlowListView I'm using.

Any ideas? I'm on Xamarin Forms 2.5.1.444934.

Here's the custom FrameRenderer:

class ExtendedFrameRenderer : FrameRenderer
{
    protected override void OnElementChanged(ElementChangedEventArgs<Frame> e)
    {
        base.OnElementChanged(e);

        if (Control != null)
        {
            var frame = e.NewElement;
            double cornerRadius = frame.CornerRadius;

            Windows.UI.Color frameBG = Windows.UI.Color.FromArgb(
                (byte)(frame.BackgroundColor.A * 255),
                (byte)(frame.BackgroundColor.R * 255),
                (byte)(frame.BackgroundColor.G * 255),
                (byte)(frame.BackgroundColor.B * 255));

            Control.CornerRadius = new Windows.UI.Xaml.CornerRadius(cornerRadius);
            Control.Background = new SolidColorBrush(frameBG);
            frame.BackgroundColor = Xamarin.Forms.Color.Transparent;
        }
    }
}

Full error stack:

System.ArgumentException
  HResult=0x80070057
  Message=Value does not fall within the expected range.
  Source=Windows
  StackTrace:
   at Windows.UI.Xaml.Controls.Border.put_Child(UIElement value)
   at Xamarin.Forms.Platform.UWP.FrameRenderer.PackChild()
   at Xamarin.Forms.Platform.UWP.FrameRenderer.OnElementChanged(ElementChangedEventArgs`1 e)
   at MyApp.UWP.Helpers.ExtendedFrameRenderer.OnElementChanged(ElementChangedEventArgs`1 e) in C:\Users\me\Source\Workspaces\MySol\MyApp\MyApp.UWP\Helpers\ExtendedFrameRenderer.cs:line 26
   at Xamarin.Forms.Platform.UWP.VisualElementRenderer`2.SetElement(VisualElement element)
   at Xamarin.Forms.Platform.UWP.Platform.CreateRenderer(VisualElement element)
   at Xamarin.Forms.Platform.UWP.VisualElementPackager.OnChildAdded(Object sender, ElementEventArgs e)
   at Xamarin.Forms.Platform.UWP.VisualElementPackager.Load()
   at Xamarin.Forms.Platform.UWP.VisualElementRenderer`2.SetElement(VisualElement element)
   at Xamarin.Forms.Platform.UWP.Platform.CreateRenderer(VisualElement element)
   at Xamarin.Forms.Platform.UWP.VisualElementPackager.OnChildAdded(Object sender, ElementEventArgs e)
   at Xamarin.Forms.Platform.UWP.VisualElementPackager.Load()
   at Xamarin.Forms.Platform.UWP.VisualElementRenderer`2.SetElement(VisualElement element)
   at Xamarin.Forms.Platform.UWP.Platform.CreateRenderer(VisualElement element)
   at Xamarin.Forms.Platform.UWP.ViewToRendererConverter.WrapperControl..ctor(View view)
   at Xamarin.Forms.Platform.UWP.ViewToRendererConverter.Convert(Object value, Type targetType, Object parameter, String language)

Hello,

I'm building a Xamarin.Forms app and have successfully released to Google Play for Android. I'm having trouble with iOS however.

The root of the problem is that I have to build with the Linker Behavior set to "Don't Link" for the duration of my development. Since my app isn't large, I wasn't concerned about it. When I recently went to submit to the App Store for TestFlight, I got an automated rejection indicating that there were all sorts of permissions I needed to add entries for in info.plist. I'm not using any of these permissions, so on a hunch I built using a Linker Behavior of "Link Framework SDKs Only" and the app was accepted for TestFlight. The problem is that my app crashes in a specific spot inside a .NET Framework 2.0 library I'm using when building with "Link Framework SDKs only".

It appears to be an Expression Tree call?

This is the stack trace:

System.ArgumentNullException: Value cannot be null.
Parameter name: method
at System.Linq.Expressions.Expression.Call (System.Linq.Expressions.Expression instance, System.Reflection.MethodInfo method, System.Collections.Generic.IEnumerable1[T] arguments) [0x00111] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/MethodCallExpression.cs:1239 at System.Linq.Expressions.Expression.Call (System.Linq.Expressions.Expression instance, System.Reflection.MethodInfo method, System.Linq.Expressions.Expression[] arguments) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/MethodCallExpression.cs:1046 at System.Linq.Expressions.Expression.Call (System.Reflection.MethodInfo method, System.Linq.Expressions.Expression[] arguments) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/MethodCallExpression.cs:1001 at System.Dynamic.ExpandoObject+MetaExpando.BindSetMember (System.Dynamic.SetMemberBinder binder, System.Dynamic.DynamicMetaObject value) [0x00033] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Dynamic/ExpandoObject.cs:863 at System.Dynamic.SetMemberBinder.Bind (System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args) [0x00035] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Dynamic/SetMemberBinder.cs:57 at System.Dynamic.DynamicMetaObjectBinder.Bind (System.Object[] args, System.Collections.ObjectModel.ReadOnlyCollection1[T] parameters, System.Linq.Expressions.LabelTarget returnLabel) [0x000c6] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Dynamic/DynamicMetaObjectBinder.cs:90
at System.Runtime.CompilerServices.CallSiteBinder.BindCore[T] (System.Runtime.CompilerServices.CallSite1[T] site, System.Object[] args) [0x00019] in <4b284bfdf0034973b11698729c2d63bc>:0 at System.Runtime.CompilerServices.CallSiteOps.Bind[T] (System.Runtime.CompilerServices.CallSiteBinder binder, System.Runtime.CompilerServices.CallSite1[T] site, System.Object[] args) [0x00000] in <4b284bfdf0034973b11698729c2d63bc>:0
at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00032] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/MonoMethod.cs:305
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Exception source) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:156
at System.Linq.Expressions.Interpreter.ExceptionHelpers.UnwrapAndRethrow (System.Reflection.TargetInvocationException exception) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/Utilities.cs:172
at System.Linq.Expressions.Interpreter.MethodInfoCallInstruction.Run (System.Linq.Expressions.Interpreter.InterpretedFrame frame) [0x00035] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/CallInstruction.cs:327
at System.Linq.Expressions.Interpreter.Interpreter.Run (System.Linq.Expressions.Interpreter.InterpretedFrame frame) [0x00015] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/external/corefx/src/System.Linq.Expressions/src/System/Linq/Expressions/Interpreter/Interpreter.cs:63
at System.Linq.Expressions.Interpreter.LightLambda.Run3[T0,T1,T2,TRet] (T0 arg0, T1 arg1, T2 arg2) [0x00038] in <4b284bfdf0034973b11698729c2d63bc>:0
at Q42.HueApi.HueClient+d__15.MoveNext () [0x000b5] in :0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in <0f7865fc4fbb4fddaab6f86c915ebae0>:0
at Q42.HueApi.Streaming.StreamingHueClient+d__12.MoveNext () [0x00091] in <88e6e7daf100469d84c7f4213d723d5e>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.9.1.24/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113

I'd appreciate any help I can get - this is completely blocking my release.

Thanks!