EWS. Change DateTimeCreate property of item

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C#

EWS

MAPI

Exchange-Server

Hi all!

I`m using EWS Proxy Classes to create new items in ExchangeServer(emails, calendars and etc.). I ahve only one problem: i need to create item with custom CreationTime ( for example, like message was created a month ago ).
DateTimeCreate property is one of properties, that don`t have write access. But i can change them via MAPI like this:

PathToExtendedFieldType q = new PathToExtendedFieldType();
        q.PropertyId = 3590; //DeliveryTime
        q.PropertyType = MapiPropertyTypeType.SystemTime;
        q.PropertyIdSpecified = true;
        newItem.ExtendedProperty[0] = new ExtendedPropertyType();
        newItem.ExtendedProperty[0].ExtendedFieldURI = q;
        newItem.ExtendedProperty[0].ExtendedFieldURI.DistinguishedPropertySetIdSpecified = true;
        newItem.ExtendedProperty[0].Item = new System.DateTime(2013, 5, 5, 5, 5, 5).ToString("yyyy-MM-ddTHH:mm:ssZ");

That code works fine. I can change SentTime and ReciveTime, but not CreationTime. I even found MAPI Property ID for DateTimeCreate, but it doesn`t works. (PR_CREATION_TIME ( PT_SYSTIME, 0x3007)).
I found resolve for C++ for MAPI creation. Resolve was: first create item, then change DateTimeCreate. I tried to create item and after UpdateItem.

private void UpdateItem(ItemIdType itemID)
{
    //Update created item
    ItemIdType itemId = new ItemIdType();
    itemId.Id = itemID.Id;
    itemId.ChangeKey = itemID.ChangeKey;
    ItemType ciSetEP = new ItemType();
    //////////////////////////////////////////////////////////////////////////
    PathToExtendedFieldType extFieldURI = new PathToExtendedFieldType();
    extFieldURI.PropertyTag = Convert.ToString(ExtendedPropertyID.DateTimeCreate);
    extFieldURI.PropertyType = MapiPropertyTypeType.SystemTime;

    // Identify the custom property to set.
    ciSetEP.ExtendedProperty = new ExtendedPropertyType[1];
    ciSetEP.ExtendedProperty[0] = new ExtendedPropertyType();
    ciSetEP.ExtendedProperty[0].ExtendedFieldURI = extFieldURI;
    ciSetEP.ExtendedProperty[0].Item = DateTime.Parse("31/05/2013 01:02:03.456").ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssZ");
    // Add the calendar item and the identified custom property
    // to the ItemChangeDescriptionType. This is an SetItemFieldType.
    //////////////////////////////////////////////////////////////////////////

    SetItemFieldType setItemField = new SetItemFieldType();
    setItemField.Item = extFieldURI;
    setItemField.Item1 = ciSetEP;

    UpdateItemType request = new UpdateItemType();
    request.ItemChanges = new ItemChangeType[1] { new ItemChangeType() };
    request.ItemChanges[0].Item = itemId;
    request.ItemChanges[0].Updates = new ItemChangeDescriptionType[1];
    request.ItemChanges[0].Updates[0] = setItemField;
    request.MessageDisposition = MessageDispositionType.SaveOnly;
    request.MessageDispositionSpecified = true;

    UpdateItemResponseType updateItemResponse = m_mailbox.UpdateItem(request);
    if (updateItemResponse.ResponseMessages.Items[0].ResponseClass != ResponseClassType.Success)
        throw new EwsException(updateItemResponse.ResponseMessages.Items[0], "ESMailboxManager.UpdateItem");

}

That code works, but there is no result. I tried to update another fiedls - it works fine.

Can someone help? Really need to set that field.