Batch update: Fix most issues

source/Helpers/StringCollectionExtension.cs

@@ -0,0 +1,26 @@
+using System;
+using System.CodeDom;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LSLEditor.Helpers
+{
+    internal static class StringCollectionExtension
+    {
+        internal static string[] ToArray(this StringCollection strings)
+        {
+            string[] ret = new string[strings.Count];
+            strings.CopyTo(ret, 0);
+            return ret;
+        }
+
+        internal static void set(this StringCollection strings, List<string> newList)
+        {
+            strings.Clear();
+            strings.AddRange(newList.ToArray());
+        }
+    }
+}