protected override void OnAttachedTo(Picker bindable)
{
base.OnAttachedTo(bindable);
viewModel = bindable.FindByName <Grid>("_Grid").BindingContext as FunctionsLibraryViewModel;
bindable.SelectedIndexChanged += Bindable_SelectedIndexChanged;
}
public ComputeCommand(FunctionsLibraryViewModel _viewModel)
{
viewModel = _viewModel;
calcData = viewModel._CalcData;
}