![vb net 2010 listview remove selected item vb net 2010 listview remove selected item](http://www.codeproject.com/KB/list/GroupableListView/GroupableListView2.png)
I'll have sit do some more research before I can piece it all together and amend my code to suit.Īfter reading a bit and translating your code into what I think I needed.Listview is basically a table on which user can easily add, edit or delete selected record. Public ReadOnly Property DeleteCommand As ICommand Private _deleteCommand As ICommand = New DeleteCommand() Private Event ICommand_CanExecuteChanged As EventHandler Implements ICommand.CanExecuteChanged Public Event CanExecuteChanged As EventHandler 'check if the target ListView has one or more items selected. Public Function CanExecute(ByVal parameter As Object) As Boolean Implements ICommand.CanExecute Public Sub Execute(ByVal parameter As Object) Implements ICommand.Execute I'm just using the xaml and code behind. ObservableCollection and INotifyPropert圜hanged are not currently in my code.
![vb net 2010 listview remove selected item vb net 2010 listview remove selected item](http://2.bp.blogspot.com/-TdNZ9DKE8fs/UIXUv7ZDzLI/AAAAAAAAAfc/X27vQaxSpSo/s1600/image001-731606.jpg)
Hopefully you can master the basics fast enough to use WPF UI in AutoCAD. Well, it is quite some learning to get started with WPF and MVVM pattern. And then finally, in the deleting command's CanExecute() method, you simply test if property SelectedSomething is null or not. With this ViewModel (DataContext) to be bound to the UI, you can set the ListView's ItemsSource to be bound to "Somethings", and the ListView's SelectedItem to be bound to "SelectedSomething". '' Other properties exposed for binding, such as commands OnPropert圜hange("SelectedSomething") '' This method should be defined in ViewModelBase clase Public Property SelectedSomething() As Something
![vb net 2010 listview remove selected item vb net 2010 listview remove selected item](https://slideplayer.com/slide/13779107/85/images/31/Main+form+-+Delete+Add+following+code+to+handler+function..jpg)
Public Property Somethings() As ObserverbaleCollection(of Something) Private _somthings As New ObservableCollection(of Something)() Inherit ViewModelBase '' You probably have a viewmodelbase class that implementing INotifyPropert圜hanged The ViewModel (MyDataContext class, according to your next post) should look like: The items that are bound to the listview should be ObservableCollection. I'd not use WPF UI if MVVM pattern is not used. Obviously, if you do not use MVVM pattern, you can still write code behind the view, as you do with Win Form (but a lot more code and messier). Then you only need one line of code as CanExecute function: (o)=> If you do use MVVM pattern, your ViewModel would have an ObservableCollection bound to the ListView and a SelectedSomething property that is bound to the ListView's SelectedItem. In your case, the logic in CanExecute() would be something like: check if the target listview has one or more items selected or not if no, returns False, so the command is disabled (thus, pressing "Delete" would do nothing to the ListView) if yes, as optional, you may want to pop up a message box with "yes/No" button for user confirmation, then return True or False accordingly. So, it is up to you to place code logic in it to decide what to do so that the Command either can be executed, or disabled. ICommand, which is bound to the "Delete" key, must have an implemented CanExecute function that returns a boolean value. OK, I assume that the KeyBinding now does work, right? Of course, the DeleteCommand would have its "CanExecute" function properly coded so that if no item in the ListView is selected, the function returns False, so that the command is disabled, and pressing "Delete" button would not run the command's code. If your UI is a dialog window, the root UIElement is, if it is a Palette in a custom PalatteSet, it is, so it would be something like: Having said that, let me give it a try: you may want to apply KeyBinding in the root UIElement, instead of ListView. NET programming still use Win Forms more than WPF in AutoCAD add-in as UI, thus you have much less chance of getting good replies for this kind of question in this forum than in more generic, WPF discussion forums, such as in. NET API programming at all, and I bet many, if not most, AutoCAD. Well, your question is really not related to AutoCAD. If lvScrsPre.SelectedItem IsNot Nothing Then I think I'm doing a different approach to xml here: Private Sub lvScrsPre_KeyDown(ByVal sender As Object, ByVal e As KeyEventArgs) I thought this would work, but I'm just confused at this point. I want to delete items from this listview using the delete key.ĭo I have the KeyBinding in the correct location? Maybe I need to activate something, I don't know.Ĭode-behind Custom class: Public Class Scripts I'm trying to bind the Delete key to my ListView in WPF.