public static ShapeSaveHelper GetInstance()
{
if (instance is null)
{
instance = new ShapeSaveHelper();
}
return(instance);
}
public MainWindow()
{
ResizeMode = ResizeMode.NoResize;
InitializeComponent();
try
{
shapeSaveHelper = ShapeSaveHelper.GetInstance();
shapeSaveHelper.Init(new JsonShapeReadWriter(JsonShapeReadWriter.DefaultDataCatalog));
shapes = shapeSaveHelper.LoadShapes();
shapeList.ItemsSource = shapes;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
Close();
}
Closed += MainWindowClosed;
}