How to use trigger with parameter?
Hi! I have some Entry and a Button. I need use Trigger to make sure all Entry not null to enable Button (MVVM) How to do that! If you have a best way, please suggest me! Thank!
View ArticleFile Picker in Xamarin make only select particular format files
Like: doc,txt have any solution?
View Articlei have a button and an image view when i take image form gallery how can i...
async void Button_Clicked(object sender, EventArgs e) { await CrossMedia.Current.Initialize(); if (!CrossMedia.Current.IsPickPhotoSupported) { await DisplayAlert("error", "errore", "ok"); return; } var...
View ArticleClik here to view.
Item of Grid does not fit in cell
Hi everyone, I have faced with issue that Grid Item does not fit in cell: <Grid VerticalOptions="FillAndExpand" x:Name="Grid" RowSpacing="15" ColumnSpacing="15"> <Grid.ColumnDefinitions>...
View ArticleBinding between custom Usercontrol and ViewModel not working?
Hi! I've created a custom usercontrol in my application and I try to bind to its property (BindableProperty) to ViewModel but it doesn't work for me. Am I doing something wrong? This is the...
View ArticleClik here to view.
disabling back button on logout
hey, I have a logout button, wen clicked , it navigates to login page but has back button on top which leads the user back to app, how to disable it?
View ArticleDisable device back button
Hi all. Any one know how to disable device back button in xamarin forms app? Thanks Lasantha
View ArticleCollectionView jumping
Hi guys and girls! In my project it contains CollectionView, which contain viewes with switches. After toggled the switch, each waste item increases in size. Everything is good if the waste is at the...
View ArticleData Annotation Validation from .net Standard Class Library
Hi Team, I have class library in .net Standard 2.0 with EntityFrameworkCore. I have created class with Custom Data Annotation as below: Model Definition public class UserLogin : NotificationObject {...
View ArticleHow to fire Completed event in Forms Editor in UWP with a real keyboard?
Question says it all. How do I fire the Completed event in the Editor in UWP with a real keyboard? The doco states "Completed is raised when the user ends input with a field by entering the return key...
View ArticleUse Xamarin.Forms Carousel View to display List of ListView, each contains...
Hi guys, im using Xamarin.Forms and im having a problem trying to use alexrainman's Carousel View. Particularly, i want to set up a Carousel View in which each view is a ListView , and then each...
View ArticleHow to reference BindingContext of ContentPage inside ContentPage.Resources?
Hey. I have a ContentPage which contains ContentPage.Resources which contains a DataTemplate for my ListView and inside that DataTemplate I try to reference the BindingContext of my ContentPage to bind...
View ArticleAnother "Could not AOT the assembly ..."
Hi, I'm facing a "Could not AOT the assembly"-Error without any errornumber. The solution works fine on Android, Windows Phone and iOS iPhoneSimulator. But trying to deploy it to iPhone devices it...
View ArticleHow to dynamically set the Shell TabBar colors
Setting the color dynamically for an element using a resource is done in the following way: XAML <ContentPage BackgroundColor="{DynamicResource backgroundcolor}"/> Code behind:...
View ArticleGrid not expanding to fit content
I have a page that has a series of grids on it. These grids are set up to have three rows and a variable number of rows. Each cell displays a picture and 3 lines of text, if that data is available for...
View ArticleCurved bottom navigation bar in xamarin forms
I'm trying to create curved bottom navigation bar in xamarin forms tabbed page and I'm copying the code of this website (Can't put the link don't know why) into my TabbedPageRenderer. The problem is...
View ArticleWhere to store files in Xamarion Forms application
Hello, I need to store video files to be reproduced in an Android and iOS system. So far, I have not found any information about where to store the files. Notice that I need to store the files using...
View ArticleClik here to view.
Does anyone know complete Xamarin Forms and ASP.NET Core tutorials or courses...
I am interested in learning Xamarin Forms and ASP.NET Core 2.2 ( I think that's the latest update of ASP.NET Core ) as well as how those two frameworks work together in full-stack Web Development. I've...
View Article