EWS 读取邮件纯文本正文获取 ServiceObjectPropertyException答案

【问题标题】：EWS Read Mail Plain Text Body Getting ServiceObjectPropertyExceptionEWS 读取邮件纯文本正文获取 ServiceObjectPropertyException
【发布时间】：2016-07-04 08:19:53
【问题描述】：

我在下面的代码中执行了以下操作，但仍然收到 ServiceObjectPropertyException。我显然按照here too 的建议加载了该属性。请任何人都可以帮助指出我做错了什么

this.ExchangeService = new ExchangeService(ExchangeVersion.Exchange2013);

                this.ExchangeService.Credentials = new WebCredentials(mailBox, password);
                this.ExchangeService.Url = new Uri("https://mail.xxxxxxxxxxx.com/EWS/Exchange.asmx");                

                PropertySet itemProperty = new PropertySet();
                itemProperty.RequestedBodyType = BodyType.Text;


                SearchFilter searchFilter = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false));

                ItemView view = new ItemView(999);
                view.PropertySet = itemProperty;                

                List<ExchangeMailResponse> emails = new List<ExchangeMailResponse>();

                FindItemsResults<Item> emailMessage = this.ExchangeService.FindItems(WellKnownFolderName.Inbox, searchFilter, view);                               


                foreach (Item mail in emailMessage)
                {

                    ExchangeMailResponse email = new ExchangeMailResponse();


                    mail.Load(itemProperty);                  

                   email.Message = mail.Body.Text;                   


                }

【问题讨论】：

标签： c# api exchangewebservices

【解决方案1】：

您尝试使用属性集，因为您没有使用 BasepropertySet 重载，并且您没有添加任何属性，您唯一告诉交换器返回 IdOnly。因此，在基本级别上，您至少需要添加 Body 属性，例如

itemProperty.Add(ItemSchema.Body);

但是，您将无法在 FindItems 操作中使用该属性集，因此我建议您更改代码，例如

        SearchFilter searchFilter = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false));

        PropertySet FindItemPropertySet = new PropertySet(BasePropertySet.IdOnly);

        ItemView view = new ItemView(999);
        view.PropertySet = FindItemPropertySet;
        PropertySet GetItemsPropertySet = new PropertySet(BasePropertySet.FirstClassProperties);
        GetItemsPropertySet.RequestedBodyType = BodyType.Text;


        FindItemsResults<Item> emailMessages = null;
        do
        {
            emailMessages = service.FindItems(WellKnownFolderName.Inbox, searchFilter, view);
            if (emailMessages.Items.Count > 0)
            {
                service.LoadPropertiesForItems(emailMessages.Items, GetItemsPropertySet);
                foreach (Item Item in emailMessages.Items)
                {
                    Console.WriteLine(Item.Body.Text);
                }
            }
        } while (emailMessages.MoreAvailable);

干杯格伦

【讨论】：