Xamarin.Forms: Hide and Show ViewCells in TableView
Hello everyone! I have a TableView with ViewCells. I need to show and hide ViewCell depending on situation from c# code. How to do that?
View ArticleImage doesnt show image from url
Hello I use Image in XAML and set to the Source URL. But in some cases, I don't see loaded image. The same URL. I can click back button and then navigate again, the image is loaded and I can see it. It...
View Articlehow to create cross platform app in xamarin studio
Hi, I want to create quiz module cross platform app (IOS, Android, Windows) using xamarin studio.. Initially where i have to create forms either visual studio or xamarin studio...
View ArticleInitial support for a Xamarin "advanced" beginner
Hi. I'm a C#, Deplhi, Clipper and Pascal (among others) developer. I met Xamarin, and it was love at first sight, and I'm trying to learn with development challenges of serious applications. However,...
View ArticleHow to get the screen location (Bounds or Y) of an item in a listview using...
Is there a way to get the position on screen of an item (row) in a listview either from a selection or tapped event? Is there a way to get the position on screen of an item (row) using the index of the...
View ArticleCall UIImagePickerController from Xamarin.Forms portable
Hi, I have a Xamarin Forms app where all the UI is in a portable library. I'm trying to add functionality to pick a photo from the device so for this I have an interface class in my portable library...
View ArticleThe Name Navigation does not exists
Hi, I just encountered a strange error message. I try to Push a New Page on the Navigationstack from one of my ViewModels, but the Compiler tells me, that Navigation does not exist. Here is my File: {...
View ArticleBest way to create Thumbnails of images
Hi, I need the function in my app, that the user can pick an image from the image gallery and a Thumbnail of this Image should the be stored in a Zip-File. I have no problem accesing a stream of the...
View ArticleIssue with resourcecache folder with Debug
Hello, This is my configuration : VS 2015 with Xamarin Android tools, API 22 and 23 with all android extras up to date Project with forms 2.0.0.6490 and all nugets packages up to date. My app is with...
View ArticleAndroid keyword not recognized
Hello, This is my configuration : VS 2015 with Xamarin Android tools, API 22 and 23 with all android extras up to date Project with forms 2.0.0.6490 and all nugets packages up to date. My app is with...
View ArticleiOS Renderer using the RightView property of UITextField
I am trying to create a custom renderer for a Entry subclass so that I can show a tick or cross when validation passes or fails. The approach I have taken is as follows: Created a behavior that...
View ArticleMultiselect ListViews
I am new to Xamarin Forms and was wondering if we could build Multiselect Listviews using Xamarin Forms. Any help would be appreciated.
View ArticleSystem.InvalidCastException: Specified cast is not valid.
I've been trying to solve this one for a few days. Thought I'd put it out here and see if anyone can help me see something... The exception thrown {System.InvalidCastException: Specified cast is not...
View ArticleChange Slider Minimum programatically does not update slider in UI ?
Hi, I have an issue with Slider : At first my Slider has Minimum set to 50 and its value is 50, while Maximum is 100, so the thumb is located on the left of the track which is OK. Then programatically...
View ArticleListView items bindings visually not updated when property changes
Hi, I'm having an issue with my ListView items in Xamarin.Forms 1.4.4 (same problem with 1.4.2, 1.4.3, and 1.5.0 pre3). In my XAML ItemTemplate I have : The IsSelected property comes from this class :...
View ArticleMVVM light plugin not working when used with Xamarin studio with xamarin form...
I am trying to integrate MVVM light in my xamarin forms project and its showing me the attached error, any thoughts on how I can resolve this error.
View ArticleGeolocator plugin not working
Hi, I need this plugin. And I'm using or testing this code https://components.xamarin.com/view/geolocatorplugin and it doesn't work. My xamarin studion is 5.7.2 (Indie). string tmpAdress; var myAddress...
View ArticleListView binding to ObservableCollection does not update GUI
Hi Can anyone tell me why this simple code is not working as expected? Does the ListView control not listen for changes in the bound property? Expected: when I click the Add button, the GUI (ListView)...
View ArticleIgnore - Answered: Visual Designer (GUI DEV) for Forms
First off, apologies as I am very new to Xamarin and it has been a struggle getting Xamarin, Xamarin Studio, et. al. installed without PCL issues. I have searched the forum but I am not finding an...
View ArticleSQLite.NET PCL lock guidelines
The Xamarin documentation and examples I have read shows using lock() around the database calls. However I don't see any reference to locks in the SQLite.NET PCL documentation. What about using the...
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