WPF Datagrid multiple selecteditems in MVVM
I can assure you: SelectedItems is indeed bindable as a XAML CommandParameter
After a lot of digging and googling, I have finally found a simple solution to this common issue.
To make it work you must follow ALL the following rules:
Following Ed Ball's suggestion', on you XAML command databinding, define CommandParameterproperty BEFORE Command property. This a very time-consuming bug.
Make sure your ICommand's CanExecute and Execute methods have a parameter of object type. This way you can prevent silenced cast exceptions that occurs whenever databindingCommandParameter type does not match your command method's parameter type.
private bool OnDeleteSelectedItemsCanExecute(object SelectedItems)
{// Your goes heres
}
private bool OnDeleteSelectedItemsExecute(object SelectedItems)
{// Your goes heres
}
For example, you can either send a listview/listbox's SelectedItems property to you ICommand methods or the listview/listbox it self. Great, isn't it?
Hope it prevents someone spending the huge amount of time I did to figure out how to receiveSelectedItems as CanExecute parameter.
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