AdvancedLauncher.UI.Extension.BindingEvaluator.Evaluate C# (CSharp) Method

        public string Evaluate(object dataItem) {
            this.DataContext = dataItem;
            SetBinding(ValueProperty, ValueBinding);
            return Value;
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            Editor = Template.FindName(PartEditor, this) as TextBox;
            Popup = Template.FindName(PartPopup, this) as Popup;
            ItemsSelector = Template.FindName(PartSelector, this) as Selector;
            BindingEvaluator = new BindingEvaluator(new Binding(DisplayMember));

            if (Editor != null) {
                Editor.TextChanged += OnEditorTextChanged;
                Editor.PreviewKeyDown += OnEditorKeyDown;
                Editor.LostFocus += OnEditorLostFocus;

                if (SelectedItem != null) {
                    Editor.Text = BindingEvaluator.Evaluate(SelectedItem);
                }
            }

            if (Popup != null) {
                Popup.StaysOpen = false;
                Popup.Opened += OnPopupOpened;
                Popup.Closed += OnPopupClosed;
            }
            if (ItemsSelector != null) {
                SelectionAdapter = new SelectionAdapter(ItemsSelector);
                SelectionAdapter.Commit += OnSelectionAdapterCommit;
                SelectionAdapter.Cancel += OnSelectionAdapterCancel;
                SelectionAdapter.SelectionChanged += OnSelectionAdapterSelectionChanged;
            }
        }