System.Xml.Serialization.XmlSerializationWriter.GetPrimitiveTypeNameInternal C# (CSharp) Method

        internal static XmlQualifiedName GetPrimitiveTypeNameInternal(Type type)
        {
            string typeName;
            string typeNs = XmlSchema.Namespace;

            switch (type.GetTypeCode())
            {
                case TypeCode.String: typeName = "string"; break;
                case TypeCode.Int32: typeName = "int"; break;
                case TypeCode.Boolean: typeName = "boolean"; break;
                case TypeCode.Int16: typeName = "short"; break;
                case TypeCode.Int64: typeName = "long"; break;
                case TypeCode.Single: typeName = "float"; break;
                case TypeCode.Double: typeName = "double"; break;
                case TypeCode.Decimal: typeName = "decimal"; break;
                case TypeCode.DateTime: typeName = "dateTime"; break;
                case TypeCode.Byte: typeName = "unsignedByte"; break;
                case TypeCode.SByte: typeName = "byte"; break;
                case TypeCode.UInt16: typeName = "unsignedShort"; break;
                case TypeCode.UInt32: typeName = "unsignedInt"; break;
                case TypeCode.UInt64: typeName = "unsignedLong"; break;
                case TypeCode.Char:
                    typeName = "char";
                    typeNs = UrtTypes.Namespace;
                    break;
                default:
                    if (type == typeof(XmlQualifiedName)) typeName = "QName";
                    else if (type == typeof(byte[])) typeName = "base64Binary";
                    else if (type == typeof(Guid))
                    {
                        typeName = "guid";
                        typeNs = UrtTypes.Namespace;
                    }
                    else if (type == typeof (TimeSpan))
                    {
                        typeName = "TimeSpan";
                        typeNs = UrtTypes.Namespace;
                    }
                    else if (type == typeof (XmlNode[]))
                    {
                        typeName = Soap.UrType;
                    }
                    else
                        return null;
                    break;
            }
            return new XmlQualifiedName(typeName, typeNs);
        }