/// <summary>
/// Writes an EWS SetUpdate opeartion for the specified property.
/// </summary>
/// <param name="writer">The writer to write the update to.</param>
/// <param name="propertyDefinition">The property fro which to write the update.</param>
private void WriteSetUpdateToXml(EwsServiceXmlWriter writer, PropertyDefinition propertyDefinition)
{
// The following test should not be necessary since the property bag prevents
// properties to be updated if they don't have the CanUpdate flag, but it
// doesn't hurt...
if (propertyDefinition.HasFlag(PropertyDefinitionFlags.CanUpdate))
{
object propertyValue = this[propertyDefinition];
bool handled = false;
ICustomUpdateSerializer updateSerializer = propertyValue as ICustomUpdateSerializer;
if (updateSerializer != null)
{
handled = updateSerializer.WriteSetUpdateToXml(
writer,
this.Owner,
propertyDefinition);
}
if (!handled)
{
writer.WriteStartElement(XmlNamespace.Types, this.Owner.GetSetFieldXmlElementName());
propertyDefinition.WriteToXml(writer);
writer.WriteStartElement(XmlNamespace.Types, this.Owner.GetXmlElementName());
propertyDefinition.WritePropertyValueToXml(writer, this, true /* isUpdateOperation */);
writer.WriteEndElement();
writer.WriteEndElement();
}
}
}
/// <summary>
/// Writes an EWS DeleteUpdate opeartion for the specified property.
/// </summary>
/// <param name="writer">The writer to write the update to.</param>
/// <param name="propertyDefinition">The property fro which to write the update.</param>
/// <param name="propertyValue">The current value of the property.</param>
private void WriteDeleteUpdateToXml(
EwsServiceXmlWriter writer,
PropertyDefinition propertyDefinition,
object propertyValue)
{
// The following test should not be necessary since the property bag prevents
// properties to be deleted (set to null) if they don't have the CanDelete flag,
// but it doesn't hurt...
if (propertyDefinition.HasFlag(PropertyDefinitionFlags.CanDelete))
{
bool handled = false;
ICustomUpdateSerializer updateSerializer = propertyValue as ICustomUpdateSerializer;
if (updateSerializer != null)
{
handled = updateSerializer.WriteDeleteUpdateToXml(writer, this.Owner);
}
if (!handled)
{
writer.WriteStartElement(XmlNamespace.Types, this.Owner.GetDeleteFieldXmlElementName());
propertyDefinition.WriteToXml(writer);
writer.WriteEndElement();
}
}
}
/// <summary>
/// Writes the update to XML.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="ewsObject">The ews object.</param>
/// <param name="propertyDefinition">Property definition.</param>
/// <returns>True if property generated serialization.</returns>
bool ICustomUpdateSerializer.WriteSetUpdateToXml(
EwsServiceXmlWriter writer,
ServiceObject ewsObject,
PropertyDefinition propertyDefinition)
{
// If the collection is empty, delete the property.
if (this.Count == 0)
{
writer.WriteStartElement(XmlNamespace.Types, ewsObject.GetDeleteFieldXmlElementName());
propertyDefinition.WriteToXml(writer);
writer.WriteEndElement();
return(true);
}
// Otherwise, use the default XML serializer.
else
{
return(false);
}
}