using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; namespace SWS.CAD.Services { public interface IResourceService { Style GetStyle(string key); } public class ResourceService : IResourceService { public Style GetStyle(string key) => Application.Current == null ? null : Application.Current.TryFindResource(key) as Style; } }