Generic read/write

README.md

@@ -99,10 +99,13 @@ oi.ProductPriceFix.PriceAmount = 14;
 //oi.ProductPriceFix.AllowOrChargesFix.AllowOrCharge.Type = AllowOrChargeTypes.Allowance;
 
 o.OrderItemList.Add(oi);
+
+
+string xml = Xml.Serialize<Order>(o);
 }
 
-var ot = new XmlCreator(o).Result;
+OrderResponse response = Xml.Deserialize<OrderResponse>(serializedXmlData);
 ```
 
 # Links
-- Website https://www.dxsdata.com/2019/08/opentrans-for-net-core/
+- Website https://www.dxsdata.com/2019/08/opentrans-for-net-core/

openTRANS/IOpenTransBase.cs

@@ -0,0 +1,4 @@
+namespace openTRANS {
+    public interface IOpenTransBase {
+    }
+}

openTRANS/ORDER/Order.cs

@@ -6,7 +6,7 @@
 namespace openTRANS
 {
     [XmlRoot("ORDER", Namespace = "http://www.opentrans.org/XMLSchema/2.1", IsNullable = false)]
-    public partial class Order
+    public partial class Order : IOpenTransBase
     {
         [XmlAttribute("schemaLocation", Namespace = XmlSchema.InstanceNamespace)]
         public string xsiSchemaLocation = "http://www.opentrans.org/XMLSchema/2.1%20opentrans_2_1.xsd";

openTRANS/ORDERRESPONSE/OrderResponse.cs

@@ -4,7 +4,7 @@
 namespace openTRANS
 {
     [XmlRoot("ORDERRESPONSE", Namespace = "http://www.opentrans.org/XMLSchema/2.1", IsNullable = false)]
-    public partial class OrderResponse
+    public partial class OrderResponse  : IOpenTransBase
     {
         [XmlAttribute("version")]
         public string Version = "2.1";
@@ -26,4 +26,4 @@ public OrderResponseSummary OrderResponseSummary
             set { }
         }
     }
-}
+}

openTRANS/Xml.cs

@@ -0,0 +1,63 @@
+using System.IO;
+using System.Text;
+using System.Xml.Serialization;
+
+namespace openTRANS {
+    public static class Xml {
+        static Xml() {
+        }
+
+        public static string Serialize<T>(T o) where T : class, IOpenTransBase {
+
+            var xmlns = new XmlSerializerNamespaces();
+            xmlns.Add(nameof(Common.Namespace.xsi), Common.Namespace.xsi);
+            xmlns.Add(nameof(Common.Namespace.bmecat), Common.Namespace.bmecat);
+            xmlns.Add(nameof(Common.Namespace.xmime), Common.Namespace.xmime);
+            xmlns.Add(nameof(Common.Namespace.xsig), Common.Namespace.xsi);
+
+
+            XmlSerializer serializer = new XmlSerializer(typeof(T));
+            using (var writer = new UTF8StringWriter()) {
+                serializer.Serialize(writer, o, xmlns);
+                return writer.ToString();
+            }
+        }
+
+        public static T Deserialize<T>(string xml) where T : class, IOpenTransBase {
+            var serializer = new XmlSerializer(typeof(T));
+
+            using (TextReader reader = new StringReader(xml)) {
+                return (T)serializer.Deserialize(reader);
+            }
+        }
+        //https://stackoverflow.com/questions/3871738/force-xdocument-to-write-to-string-with-utf-8-encoding
+        private class Utf8StringWriter : StringWriter {
+            public override Encoding Encoding { get { return Encoding.UTF8; } }
+        }
+
+        //writes UTF-8 in uppercase; see class below
+        private class UTF8StringWriter : StringWriter {
+            public override Encoding Encoding { get { return new UpperCaseUTF8Encoding(); } }
+        }
+
+
+        /// <summary>
+        /// Sometimes utf-8 definition in first line needed in uppercase by suppliers.
+        /// https://stackoverflow.com/questions/4291332/utf-8-in-uppercase
+        /// </summary>
+        public class UpperCaseUTF8Encoding : UTF8Encoding {
+
+            public override string WebName => base.WebName.ToUpper();
+
+            public static UpperCaseUTF8Encoding UpperCaseUTF8 {
+                get {
+                    if (upperCaseUtf8Encoding == null)
+                        upperCaseUtf8Encoding = new UpperCaseUTF8Encoding();
+                    return upperCaseUtf8Encoding;
+                }
+            }
+
+            private static UpperCaseUTF8Encoding upperCaseUtf8Encoding = null;
+        }
+    }
+}

testform/testform.cs

@@ -137,12 +137,11 @@ private void testform_Load(object sender, EventArgs e)
                 o.OrderItemList.Add(oi);
             }
 
-            var ot = new XmlCreator(o);
-            textBox1.Text = ot.Result;
+            textBox1.Text = Xml.Serialize(o);
         }
 
         private void textBox2_TextChanged(object sender, EventArgs e) {
-            OrderResponse response = new XmlReader(textBox2.Text).Result;
+            OrderResponse response = Xml.Deserialize<OrderResponse>(textBox2.Text);
         }
     }
 }