Merge pull request #1155 from oxygen-dioxide/localizedsort

Fix OpenUtau failed to search singers when the user runs OpenUtau for the first time

Author: stakira

OpenUtau.Core/Util/LocalizedSort.cs

@@ -19,10 +19,17 @@ public int Compare(string x, string y) {
     public static class LocalizedSort {
         public static IEnumerable<T> LocalizedOrderBy<T>(this IEnumerable<T> source, Func<T, string> selector) {
             var sortingOrder = Preferences.Default.SortingOrder;
-            if(sortingOrder == String.Empty) {
-                sortingOrder = Preferences.Default.Language;
+            CultureInfo culture;
+            if(sortingOrder == null) {
+                //Follow the display language
+                culture = CultureInfo.GetCultureInfo(Preferences.Default.Language);
+            } else if(sortingOrder == String.Empty){
+                //Don't translate
+                culture = CultureInfo.InvariantCulture;
+            } else {
+                culture = CultureInfo.GetCultureInfo(sortingOrder);
             }
-            var comparer = new LocalizedComparer(CultureInfo.GetCultureInfo(sortingOrder));
+            var comparer = new LocalizedComparer(culture);
             return source.OrderBy(selector, comparer);
         }
     }