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How to specify sign-in policies for Azure AD B2C for a Xamarin.Forms (iOS) app?

Hi, My current status is: Xamarin Noob I have used the following sample iOS project as provided here: https://blog.xamarin.com/put-adal-xamarin-forms/ The sample is pretty straight forward and I can...

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How to retrieve mail attachments using IMAP ?

How to retrieve and download mail attachments using IMAP ?.

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Changing ListView's ItemsSource causes an out of range exception in Windows...

There appears to be a bug in the ListView control for Windows Store apps. If you try to change the ItemsSource after it is loaded it throws an exception. The same exception is thrown if I initially...

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Xamarin.Forms.Picker Class Causes App Crash on Android

We took the C# Picker class example from https://developer.xamarin.com/api/type/Xamarin.Forms.Picker/ and are experiencing a crash on Android (Kitkat and Lollipop builds) - This works fine on IOS To...

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Unable to find NameValueCollection in Xamarin.Forms project.

Hi, Does anybody knows where can I find NameValueCollection in Xamarin.Forms portable project? Referring to this link I have check for NameValueCollection class under System.Collections.Specialized...

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Adjust entry in the Grid

I have a Grid with 2 columns, and I want to adjust an Entry in the right column. However, the Entry goes down to the next row and grow to the both columns. Any way to solve it? I already tried to use a...

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Markup Extension: System.NullReferenceException

Hi guys, anyone can help me? I'm getting this error and when I look my StackTrace, I've got this error: Xamarin.Forms.Xaml.MarkupExtensionParser.SetPropertyValue Here is the code I'm using, just for...

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How to block user interaction while activity indicator is running?

Hi, I need to block the entire page from user interaction until activity indicator is running.Please help. Thanks

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Protecting local proprietary data in an app

I have a Xamarin.Forms app that uses a local SqLite database as its source for data. The data is proprietary, so I want to protect it so that if someone gets access to the database file, they would...

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iOS and Android dependency classes' inheritance causes "You must add a...

In my Xamarin.Forms project I have a dependency interface `/* * Interface to get device IP address on network, implemented natively in .Droid's and .iOS's IPAddressManager.cs */ public interface...

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NControl and DrawImage

I recently discover the NGraphics and NControl. I'm testing NControl in a XF project and can draw lines, rectangles, etc, but can't get the DrawImage to work for some reason. I'm targeting Android and...

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error when set Selected Item or Current Page in Carousel Page (Android)

I tried to set Selected Item and Current Page in Carousel Page when i want to see specific item when Carousel page showing. But it's not working. First item or 2 last item of ItemsSource work correct,...

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XAML Constructor Parameter with Binding

I have a custom renderer to display a video player, which takes in one parameter: the URL of the video. It works fine, even in XAML: <ui:VideoContentView x:Name="Video"> <x:Arguments>...

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Bug in horizontal alignment in a custom ViewCell in the ListView

Hello, I have a bug related with horizontal alignment in a custom ViewCell in the ListView. Or maybe I do something wrong. I have a small and simple data model class: public class DataItem { public...

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Custom Button Renderer not working in iOS

I want to draw a 'down' triangle over a button (like a windows dropdown list). In Android, putting code into the Draw method draws after the button is rendered by the system. In iOS it draws before, so...

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Android Navigation Bar changing after showing modal

I have a Navigation page which shows its content correctly and whose Color is set correctly when the application starts everything is ok but then when I show a Modal page and I pop it, the color is...

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Threading issues in App.cs OnSleep()

I'm using PCL Storage to write my JSON data to the device, and it's working great for the most part. However it is failing during the App OnSleep() event. The functions CreateFileAsync() and...

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Show white color screen at android 5.0 and above

I developed the Xamarin app and installed on android 4.0. Everything is ok. But I installed in android 5.0 and above, the white color screen is come out as my attached when application start. Any ideas...

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Picker Height?

I'm using the Xamarin.Forms.Picker control. I've used some of the binding examples on the forum and that side of things is working great. The problem I have is the picker is only showing three items on...

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Download, save and display Pdf file

I have the following requirements in my xamarin.forms app I need to download a pdf file from the url on button click Need to save them locally in defined folder Then i need to display with installed...

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