Answer to http://www.lostechies.com/blogs/derickbailey/archive/2011/02/01/good-refactoring-patterns-for-simple-ui-logic.aspx

Refactored.cs

		public interface IUpdaterUI
		{
			
			string Message {set;}
			int Progress {set;}
			bool AllowContinue {set;}
			bool AllowCancel {set;}
			void Close();
		}
		
		private void DownloadUpdates(IUpdaterUI ui)
		{
			try
			{
				ui.Progress = 5;
				ui.Message = AvailableUpdate.DownloadingUpdateLabelText;
				
				var IsSoftwareUpdate = AvailableUpdate.SoftwareUpdateAvailable;
				var IsDataUpdate = !IsSoftwareUpdate && AvailableUpdate.DataUpdateAvailable;
				var IsUpdate = IsSoftwareUpdate || IsDataUpdate;
				
				if (IsUpdate) ui.Progress = 50;
				if (IsSoftwareUpdate) UpdateSoftware();
				if (IsDataUpdate) UpdateData();
				if (IsUpdate) ui.Progress = 100;
				if (IsSoftwareUpdate)
				{
					ui.Close();
				}
				if (IsDataUpdate)
				{
					ui.Message = "Complete";
					ui.AllowCancel=false;
					ui.AllowContinue = true;
				}
			}
			catch (Exception e)
			{
				// error handler code here
			}
		}