private int UpdateItems(IConversationTree conversationTree, List <GroupOperationResult> results)
{
int num = 0;
foreach (IConversationTreeNode conversationTreeNode in conversationTree)
{
for (int i = 0; i < conversationTreeNode.StorePropertyBags.Count; i++)
{
if (!this.CanSkipProcessing(conversationTreeNode.StorePropertyBags[i]))
{
StoreId storeId = conversationTreeNode.StorePropertyBags[i].TryGetProperty(ItemSchema.Id) as StoreId;
List <string> list = null;
if (ConversationActionItem.MergeCategories(conversationTreeNode.StorePropertyBags[i].TryGetProperty(ItemSchema.Categories) as string[], this.AlwaysCategorizeValue, this.ConversationActionLastCategorySet, out list))
{
try
{
using (Item item = Microsoft.Exchange.Data.Storage.Item.Bind(base.Session, storeId, null))
{
num++;
item.OpenAsReadWrite();
if (list.Count == 0)
{
item.Delete(ItemSchema.Categories);
}
else
{
item[ItemSchema.Categories] = list.ToArray();
}
item.Save(SaveMode.ResolveConflicts);
results.Add(new GroupOperationResult(OperationResult.Succeeded, new StoreObjectId[]
{
StoreId.GetStoreObjectId(storeId)
}, null));
}
}
catch (LocalizedException storageException)
{
results.Add(new GroupOperationResult(OperationResult.Failed, new StoreObjectId[]
{
StoreId.GetStoreObjectId(storeId)
}, storageException));
}
}
}
}
}
if (ConversationActionItem.NeedToAddCategory(this.ConversationActionLastCategorySet, this.AlwaysCategorizeValue))
{
this.ConversationActionLastCategorySet = this.AlwaysCategorizeValue;
}
return(num);
}
private static bool MergeCategories(IList <string> messageCategories, IList <string> categoriesCurrent, IList <string> categoriesPrev, out List <string> mergedCategories)
{
mergedCategories = null;
categoriesCurrent = ((categoriesCurrent == null) ? new List <string>() : categoriesCurrent);
categoriesPrev = ((categoriesPrev == null) ? new List <string>() : categoriesPrev);
messageCategories = ((messageCategories == null) ? new List <string>() : messageCategories);
IEnumerable <string> second = categoriesCurrent.Except(categoriesPrev, Category.NameComparer);
IEnumerable <string> second2 = categoriesPrev.Except(categoriesCurrent, Category.NameComparer);
IEnumerable <string> collection = messageCategories.Except(second2).Union(second);
mergedCategories = new List <string>(collection);
return(ConversationActionItem.NeedToAddCategory(mergedCategories, messageCategories));
}
