Removing an item in the list in MVVM

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hello guys i was able to add items using this method

C#

public ObservableCollection<CartData> cartData
     {

         get
         {
             if (App.Current._cartData == null)
             {
                 App.Current._cartData = new ObservableCollection<CartData>();

             }


             return App.Current._cartData;

         }
         set
         {

             SetProperty(ref App.Current._cartData, value);
         }
     }

public CartData(){

cartData.Add(new CartData { Cakename = this.CakeName, Cakeprice = App.Current.cakeprice,ImagePath=bitmapimage,Caketype=App.Current.caketype,Cakesize=App.Current.cakesize });


}

it is binded to the listview, now im trying to remove the item if certain item is selected and pressed a button. How do i know the Index of the selected item in the list?

Posted 11-Mar-14 0:27am

hack.luminence

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jthomas1234321 · Answer 1 · 2014-03-11T05:53:00

Add a second property to the viewmodel:

C#

public CartData SelectedCartData

and bind the Selected property of the listview in XAML making sure to set the Mode to TwoWay. This way the binding is pulling data from the cartData collection and pushing the selected value back into the viewmodel. Once this happens, you can then call:

cartData.Remove(SelectedCartData);

Abhinav S · Answer 2 · 2014-03-11T06:12:00

Solution 2

Try
Binding to the selected items of a ListBox (or another items controls)[^]
ListView MultiSelect, MVVM and RoutedCommands[^]
MVVM Multiselect Listbox[^]

Posted 11-Mar-14 6:12am

Abhinav S