Add empty arrays to xml

Vocaluxe/Base/CConfig.cs

@@ -419,7 +419,7 @@ namespace Vocaluxe.Base
                 case "Language":
                     return "Game-Language";
                 case "SongFolder":
-                    return "SongFolder: SongFolder1, SongFolder2, SongFolder3, ...";
+                    return "SongFolder: Add each song folder in a seperate SongFolder entry";
                 case "SongMenu":
                     return "SongMenu: " + CHelper.ListStrings(Enum.GetNames(typeof(ESongMenu)));
                 case "SongSorting":

VocaluxeLib/Xml/CXmlSerializer.cs

@@ -165,8 +165,14 @@ namespace VocaluxeLib.Xml
                 if (field.IsEmbeddedList)
                 {
                     IEnumerable values = (IEnumerable)value;
+                    bool empty = true;
                     foreach (object subValue in values)
+                    {
                         _WriteValue(writer, field.Name, field.SubType, subValue, field.IsAttribute);
+                        empty = false;
+                    }
+                    if (empty && _WriteDefaults)
+                        writer.WriteElementString(field.Name, "");
                 }
                 else if (field.IsByteArray)
                     writer.WriteElementString(field.Name, Convert.ToBase64String((byte[])value));

VocaluxeTests/XmlSerializerTest.cs

@@ -301,6 +301,11 @@ namespace VocaluxeTests
   <I>2</I>
   <J>3</J>
 </root>";
+        private const string _XmlListEmb4 = _Head + @"<root>
+  <I>2</I>
+  <Entry />
+  <J>3</J>
+</root>";
 
         [TestMethod]
         public void TestListEmbedded()
@@ -321,6 +326,10 @@ namespace VocaluxeTests
             Assert.AreEqual(foo.Ints.Count, 0, "Deserialization failed");
             res = ser.Serialize(foo);
             Assert.AreEqual(_XmlListEmb3, res, "Serialization failed");
+            ser = new CXmlSerializer(true);
+            foo.Ints.Clear();
+            res = ser.Serialize(foo);
+            Assert.AreEqual(_XmlListEmb4, res, "Serialization failed");
             _AssertFail<SListEmb, CXmlException>(_Empty);
         }
 
@@ -343,6 +352,10 @@ namespace VocaluxeTests
             Assert.AreEqual(foo.Ints.Length, 0, "Deserialization failed");
             res = ser.Serialize(foo);
             Assert.AreEqual(_XmlListEmb3, res, "Serialization failed");
+            ser = new CXmlSerializer(true);
+            foo.Ints = new SEntry[0];
+            res = ser.Serialize(foo);
+            Assert.AreEqual(_XmlListEmb4, res, "Serialization failed");
             _AssertFail<SArrayEmb, CXmlException>(_Empty);
         }