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Xamarin Forms ListView get Selected Cell


Xamarin Forms ListView get Selected Cell

By : shine
Date : November 22 2020, 10:33 AM
This might help you Instead of binding directly to a List, create a ViewModel that contains a string and a bool. Then bind your ListView to a List, and bind the IsVisible property of the checkmark to the bool property of the VM. When an item is selected, set the bool property to true in order to show the checkmark.
It's a bit of PITA, but the only way to do it that I'm aware of with the current state of the ListView control. And in the long run using a ViewModel is a good practice to get into.
code :


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Refreshing selected item ListView Xamarin Forms

Refreshing selected item ListView Xamarin Forms


By : jihane kh
Date : March 29 2020, 07:55 AM
will be helpful for those in need There are several ways of doing that.
First of all you can refresh your list data every time page appears on screen, that is OnAppearing method is called. Let's assume you have a MyViewModel with a property MyItems to which you bind your ListView's ItemSource. Also you should have a method LoadMyItems which will fetch the items from database or perhaps web service and assign the value to MyItems. In your page class you'll do something like this
code :
public class MyPage : ContentPage
        {
            private MyViewModel _viewModel;
            public MyPage()
            {
                InitializeComponent();
                _viewModel = new MyViewModel();
                BindingContext = _viewModel;
            }

            protected override void OnAppearing()
            {
                base.OnAppearing();
                _viewModel.LoadMyItems();
            }
        }
MessagingCenter.Send(this, "MyItemsChanged");
MessagingCenter.Subscribe(this, "MyItemsChanged", sender => {
                LoadMyItems();
            });
MessagingCenter.Send(this, "MyItemsChanged", MY_ITEM_ID);
MessagingCenter.Subscribe<object, string>(this, "MyItemsChanged", async (sender, id) => {
                var index = MyItems.IndexOf(MyItems.FirstOrDefault(item => item.id == id));
                MyItems[index] = await GetItemById(id);
            });
Onclicking listview cell only change content of clicked cell xamarin forms

Onclicking listview cell only change content of clicked cell xamarin forms


By : ProgrammingBeginner
Date : March 29 2020, 07:55 AM
I hope this helps . From the code you displayed, there is a much simpler way to do this without changing the ListView.ItemTemplate. It looks like you are trying to have the SelectedItem in a ListView change it's state to a "Selected" state where you display a checkbox image.
This should be done by utilizing the OnBindingContext override in the Xamarin.Forms.ViewCell class. In this override, you can gain access to the BindingContext of the ViewCell which is the model of information to be displayed. In here you should be checking the "is_selected" property and setting the Image into the ListView.ViewCell to the appropriate image stored in the application.
How to use Checked binding with radio button on item selected of the listview cell with Xamarin Forms?

How to use Checked binding with radio button on item selected of the listview cell with Xamarin Forms?


By : crysmeg
Date : March 29 2020, 07:55 AM
I hope this helps you . You haven't posted the code for objItemSelected, so you may need to mix it with my answer, but to achieve what you want you should have this:
code :
public object objItemSelected
{
  get => null;
  set
  {
     if (value == null)
        return;
     value.Radiobtn = true;
     onPropertyChanged(nameof(objItemSelected));
  }
}
Xamarin.Forms ListView does not highlight selected item?

Xamarin.Forms ListView does not highlight selected item?


By : user3339137
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Trying to ramp up a new project on Xamarin.Forms, and on iOS 13 no highlight is being shown on my ListViews. Using Visual Studio for Mac's out-of-the-box "Blank Forms App" solution, I changed the contents on MainPage.xaml to this: , The new release fixed this bug
Get id of selected item of ListView in Xamarin.Forms

Get id of selected item of ListView in Xamarin.Forms


By : Wayne
Date : March 29 2020, 07:55 AM
wish of those help You need to implement the "itemTapped" event in the code behind class as there is no command binding to the view model possible. This should look like this:
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