xamarin.forms.listview

问题 If I add an item to a listview, the items is added but the image is not showed. I have to restart application to view it. The Item is correctly added but the image is not visible. here the cs. ObservableCollection<Libreria> items = new ObservableCollection<Libreria>(new Libreria().GetLibrerie()); public Home() { InitializeComponent (); lstLibrerie.ItemsSource = items; //pickerLibrerie.ItemsSource = new Libreria().GetLibrerie(); } public void Reload(Libreria newLib) { items.Insert(0, newLib);

问题 I'm trying to use a single Label to display one of the two data fields alternately in Xamarin Forms. Only Label 1 Displaying the binding field (Contact_Name), while second Label which I am trying to use a variable "DisplayField" is not displaying either 'Contact_Address' or 'Contact_eMail' . Question posted before and Another user tried to help but it didn't work! Model Class public class Contacts { [PrimaryKey][Autoincrement] public int Contact_ID { get; set; } public string Contact_Name {

来源： https://stackoverflow.com/questions/61179382/how-to-bind-local-embedded-image-in-listview-in-xamarin-forms

问题 I want to add font awesome to my Xamarin.Forms project and I have added it to the project. Then I have added FontFamily to a Label like this: <ListView.ItemTemplate> <DataTemplate> <ViewCell> <Grid Padding="15"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <ColumnDefinition Width="9*" /> </Grid.ColumnDefinitions> <Label Grid.Column="0" Text="" FontSize="20"> <Label.FontFamily> <OnPlatform x:TypeArguments="x:String"> <On Platform="iOS" Value="Font Awesome 5 Free" /> <On Platform=

问题 I have ListView in Xamarin Page. I use ItemAppearing event to scroll down. ListViewCell height is big so 1 screen cover first and 80% part of second viewcell. Steps to load more data for scroll down: Initially when page load, it call API and get 10 records in EmployerResult List. That will be added in ListView using databinding. Having ItemAppearing event. There is a condition in this event. When last cell start to appear, it will call API and again append 10 record in List object of

问题 I am using xamarin forms listview. I am using switch control on both listview and outside of listview: When i click the event on outside of listview switch button or inside of listview switch button, it will affect bothin event class. How to avoid these issue. My code for xaml file is below: <Label Margin="0,0,10,0" Text="Select All" TextColor="Black" FontSize="Medium" HorizontalOptions="End" VerticalOptions="Center"></Label> <Switch Margin="0,0,10,0" x:Name="SelectToggled" HorizontalOptions=

问题 I am building social post sharing application using Xamarin.Forms 2.4 and it talks to my API. I have PostsPage which uses PostDataViewModel to load ObservableCollection to ListView defined in PostsPage. Data template of list views points to view file. However, in Post View Template I can bind to individual properties of My Post Model, but binding to command, which exists on ViewModel doesn't work. I tried x:Reference with no luck. My Model: using System; using System.Collections.Generic;

问题 When working with ListView in Xamarin.forms, on selecting an item, the item remains like that with a rather ugly background colour. Can i disable this feature? Here's my code: <StackLayout> <ListView x:Name="FoodList" HasUnevenRows="True" CachingStrategy="RecycleElement" ItemTapped="OnItemTapped"> <ListView.ItemTemplate> <DataTemplate> <ViewCell> <StackLayout Padding="0,15,0,0" > <StackLayout Orientation="Horizontal" BackgroundColor="White" > <Image Source="{Binding image_url}" Aspect=