ATMLCommonLibrary.controls.ATMLPreviewPanel.sourcePreviewer_MouseUp C# (CSharp) Метод

        private void sourcePreviewer_MouseUp( object sender, MouseEventArgs e )
        {
            if (ModifierKeys.HasFlag( Keys.Control ))
            {
                var activeControl = FormManager.LastActiveControl as TextBox;
                if (activeControl != null && !activeControl.IsDisposed)
                {
                    if (sourcePreviewer.Selection != null && !String.IsNullOrEmpty( ( sourcePreviewer.Selection.Text ) ))
                    {
                        activeControl.SelectedText = sourcePreviewer.Selection.Text;
                    }
                }
            }
        }