CODEWITHSUNDEEP
soapoutlookexchange-serverexchangewebservices
Tholle
Tholle

Reputation: 112787

Retrieve the Outlook Office365 Flagged property through EWS

In Outlook Office365, you can flag individual mail.

enter image description here

Toggling this flag gives an updated-entry in the SyncFolderItems-request. This property does not seem to be part of the Default properties when fetching the item, or even the AllProperties, so I guess it is an extended property.

How do I get it through EWS? I would like to support Exchange 2010.

Upvotes: 0

Views: 280

Answers (1)

Yacoub Massad
Yacoub Massad

Reputation: 27861

This is the ItemSchema.Flag property.

Do something like this to read such property when you use SyncFolderItems:

var property_set = new PropertySet(ItemSchema.Flag, ItemSchema.Id);

var result = service.SyncFolderItems(folder_id, property_set, new ItemId[] { }, 10,
SyncFolderItemsScope.NormalItems, sync_state);


foreach (var result_item in result)
{
    var flag = result_item.Item.Flag;
}

The flag variable is of type Flag. Take a look at its FlagStatus member to see how to detect if the item is flagged or not.

Since this works only for Exchange 2013, here is a work around for Exchange 2010:

var flag_property = new ExtendedPropertyDefinition(0x1090 , MapiPropertyType.Integer);

var property_set = new PropertySet(flag_property, ItemSchema.Id);

var result = service.SyncFolderItems(WellKnownFolderName.Inbox, property_set, new ItemId[] { }, 10,
SyncFolderItemsScope.NormalItems, sync_state);


foreach (var result_item in result)
{
    var flag = result_item.Item.ExtendedProperties.FirstOrDefault(x => x.PropertyDefinition == flag_property);


    if (flag == null)
    {
        //Item is not flagged    
    }
    else if((int)flag.Value == 1)
    {
        //Item is makred complete
    }
    else if ((int)flag.Value == 2)
    {
        //Item is flagged
    }
}

This is based on the PidTagFlagStatus property. Please note that the documentation state that this will not work for meeting or task items.

Upvotes: 3

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