I want to fetch all mails in the Inbox folder using EWS Managed API and store them as .eml
. The problem is in fetching (1) all mails with (2) all headers (like from, to, subject) (I am keeping information of those values of from
, to
and other properties somewhere else, so I need them too) and (3)byte[] EmailMessage.MimeContent.Content
. Actually I am lacking understanding of
Microsoft.Exchange.WebServices.Data.ItemView
,
Microsoft.Exchange.WebServices.Data.BasePropertySet
and
Microsoft.Exchange.WebServices.Data.ItemSchema
thats why I am finding it difficult.
My primary code is:
When I create PropertySet
as follows:
PropertySet properties = new PropertySet(BasePropertySet.FirstClassProperties, ItemSchema.MimeContent);
I get following exception:
The property MimeContent can't be used in FindItem requests.
I dont understand
(1) What these ItemSchema
and BasePropertySet
are
(2) And how we are supposed to use them
So I removed ItemSchema.MimeContent
:
PropertySet properties = new PropertySet(BasePropertySet.FirstClassProperties);
I wrote simple following code to get all mails in inbox:
ItemView view = new ItemView(50);
view.PropertySet = properties;
FindItemsResults<Item> findResults;
List<EmailMessage> emails = new List<EmailMessage>();
do
{
findResults = service.FindItems(WellKnownFolderName.Inbox, view);
foreach (var item in findResults.Items)
{
emails.Add((EmailMessage)item);
}
Console.WriteLine("Loop");
view.Offset = 50;
}
while (findResults.MoreAvailable);
Above I kept page size of ItemView
to 50, to retrieve no more than 50 mails at a time, and then offsetting it by 50 to get next 50 mails if there are any. However it goes in infinite loop and continuously prints Loop
on console. So I must be understanding pagesize
and offset
wrong. I want to understand
(3) what pagesize
, offset
and offsetbasepoint
in ItemView
constructor means
(4) how they behave and
(5) how to use them to retrieve all mails in the inbox
I didnt found any article online nicely explaining these but just giving code samples. Will appreciate question-wise explanation despite it may turn long.
See Question&Answers more detail:
os