Merge branch 'Development' into B2026-039-Error-sequence-contains-no-elements

good for testing

PROMS/Baseline/frmBaseline.cs

@@ -503,7 +503,7 @@ namespace Baseline
 			string[] fileList = Directory.GetFiles(fi.DirectoryName, patern);
 			// sort the list of file list
 			Array.Sort((string[])fileList);
-			return fileList.First(); // the PDF file that we what should be top of the list then.
+			return fileList.FirstOrDefault(); // the PDF file that we what should be top of the list then.
 		}
 
 		/// <summary>

PROMS/Volian.Base.Library/BaseLnSettings.cs

@@ -1,18 +1,8 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
+
 namespace Volian.Base.Library
 {
 	public static class BaseLnSettings
 	{
-		private static bool _blBaseLine = false;
-		public static bool blBaseLine
-		{
-			get { return _blBaseLine; }
-			set { _blBaseLine = value; }
-		}
+		public static bool blBaseLine { get; set; } = false;
 	}
 }