private void Offers_Button_Click(object sender, RoutedEventArgs e)
{
if (currentCanvas != null)
{
currentCanvas.Hide();
}
DataModels model = DataModels.GetInstance();
AdminOffersControlCanvas offersCanvas = AdminOffersControlCanvas.GetInstance(OffersCanvas, model.GetAllOffers());
offersCanvas.SetCanvasCoord(TabsRectangle.Width, HeaderRectangle.Height);
offersCanvas.SetCanvasDimensions(Width - TabsRectangle.Width, Height - HeaderRectangle.Height);
offersCanvas.Show();
}
