public static void SavePropertiesToXmlStream(
this IDictionary propertyBag,
XmlWriter writer,
XmlWriterSettings settings,
string name,
Dictionary <string, string> settingNameToDescriptionMap)
{
if (propertyBag == null)
{
throw new ArgumentNullException(nameof(propertyBag));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
Type propertyBagType;
string propertyBagTypeName;
propertyBagType = propertyBag.GetType();
propertyBagTypeName = propertyBagType.Name;
if (propertyBagTypeName != "PropertyBag")
{
propertyBagTypeName = NormalizeTypeName(propertyBag.GetType().FullName);
}
writer.WriteStartElement(PROPERTIES_ID);
if (name != null)
{
writer.WriteAttributeString(KEY_ID, name);
}
if (propertyBagTypeName != "PropertyBag")
{
writer.WriteAttributeString(TYPE_ID, propertyBagTypeName);
}
string[] tokens = new string[propertyBag.Keys.Count];
propertyBag.Keys.CopyTo(tokens, 0);
Array.Sort <string>(tokens);
foreach (string key in tokens)
{
object property = propertyBag[key];
StringSet stringSet = property as StringSet;
if (stringSet != null)
{
SaveSet(writer, stringSet, key);
continue;
}
IntegerSet integerSet = property as IntegerSet;
if (integerSet != null)
{
SaveSet(writer, integerSet, key);
continue;
}
IDictionary pb = property as IDictionary;
if (pb != null)
{
((IDictionary)pb).SavePropertiesToXmlStream(writer, settings, key, settingNameToDescriptionMap);
continue;
}
if (settingNameToDescriptionMap != null)
{
string description;
if (settingNameToDescriptionMap.TryGetValue(key, out description))
{
writer.WriteComment(description);
}
}
writer.WriteStartElement(PROPERTY_ID);
writer.WriteAttributeString(KEY_ID, key);
Type propertyType = property.GetType();
TypeConverter tc = TypeDescriptor.GetConverter(propertyType);
writer.WriteAttributeString(VALUE_ID, tc.ConvertToString(property));
if (propertyType != typeof(string))
{
string typeName = NormalizeTypeName(propertyType.FullName);
writer.WriteAttributeString(TYPE_ID, typeName);
}
writer.WriteEndElement(); // KeyValuePair
}
writer.WriteEndElement(); // Properties
}
public static void LoadPropertiesFromXmlStream(this IDictionary propertyBag, XmlReader reader)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
if (propertyBag == null)
{
throw new ArgumentNullException(nameof(propertyBag));
}
while (reader.IsStartElement(PROPERTIES_ID) || reader.IsStartElement(PROPERTY_ID))
{
string key = null;
string value = null;
bool isEmpty;
if (reader.IsStartElement(PROPERTIES_ID))
{
key = reader.GetAttribute(KEY_ID);
string typeName = reader.GetAttribute(TYPE_ID);
IDictionary nestedPropertyBag;
if (string.IsNullOrEmpty(typeName))
{
nestedPropertyBag = new PropertiesDictionary();
}
else
{
Type type = GetPropertiesDictionaryType(typeName);
nestedPropertyBag = (IDictionary)Activator.CreateInstance(type);
}
propertyBag[key] = nestedPropertyBag;
isEmpty = reader.IsEmptyElement;
if (!isEmpty)
{
reader.ReadStartElement(PROPERTIES_ID);
LoadPropertiesFromXmlStream(nestedPropertyBag, reader);
reader.ReadEndElement();
}
else
{
reader.Read();
}
}
else
{
key = reader.GetAttribute(KEY_ID);
value = reader.GetAttribute(VALUE_ID);
string typeName = reader.GetAttribute(TYPE_ID);
isEmpty = reader.IsEmptyElement;
if (typeName == STRING_SET_ID ||
typeName == INTEGER_SET_ID)
{
if (typeName == STRING_SET_ID)
{
StringSet set = new StringSet();
propertyBag[key] = set;
LoadSet(set, reader);
}
else
{
IntegerSet set = new IntegerSet();
propertyBag[key] = set;
LoadSet(set, reader);
}
if (!isEmpty)
{
reader.ReadEndElement();
}
continue;
}
reader.ReadStartElement(PROPERTY_ID);
Type propertyType = GetPropertiesDictionaryType(typeName);
if (typeName == "System.Version")
{
Version version;
bool succeeded = Version.TryParse(value, out version);
Debug.Assert(succeeded);
propertyBag[key] = version;
continue;
}
TypeConverter tc = TypeDescriptor.GetConverter(propertyType);
Debug.Assert(tc.CanConvertFrom(typeof(string)));
object propertyValue = tc.ConvertFromString(value);
propertyBag[key] = propertyValue;
Debug.Assert(isEmpty);
}
}
}