C# 如何使用EWS获取电子邮件正文？

我收到Outlook收件箱中的电子邮件，并根据过滤器（发件人、主题、邮件）显示在电子邮件搜索屏幕上

除了电子邮件的正文外，我可以获取所有内容：

OutlookRepository.cs:

public FindItemsResults<Item> GetEmails(string loginUsuario, string de, string assunto, string conteudo, WellKnownFolderName pasta = WellKnownFolderName.Inbox)
        {
            ExchangeService service = GetExchangeService(loginUsuario);

            var inbox = Folder.Bind(service, WellKnownFolderName.Inbox);

            SearchFilter sf = null;

            // Search by Sender
            if (!string.IsNullOrWhiteSpace(de))
                sf = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.ContainsSubstring(EmailMessageSchema.From, de));

            // Search by Subject
            if (!string.IsNullOrWhiteSpace(assunto))
                sf = new SearchFilter.SearchFilterCollection(LogicalOperator.Or, new SearchFilter.ContainsSubstring(EmailMessageSchema.Subject, assunto));

            // Search by Body
            if (!string.IsNullOrWhiteSpace(conteudo))
                sf = new SearchFilter.SearchFilterCollection(LogicalOperator.Or, new SearchFilter.ContainsSubstring(EmailMessageSchema.Body, conteudo));

            var view = new ItemView(100);

            var emails = service.FindItems(pasta, sf, view);

            return emails;
        }

public JsonResult PesquisarEmails(string de, string assunto, string conteudo)
        {
            FindItemsResults<Item> emails = ServiceFactory.GetService<IComunicacaoService>(true).RecuperarEmails(UsuarioAutenticado.Funcionario.Login, de, assunto, conteudo);

            var lista = new List<EmailFormatado>();

            foreach (Item email in emails)
            {
                lista.Add(new EmailFormatado()
                { 
                    DataEmail = email.DateTimeReceived.FormatarDataCompleta(),
                    Remetente = (email as EmailMessage).From.Address,
                    AssuntoEmail = email.Subject,
                    Descricao = email.TextBody
            });
            }

            return Json(lista, JsonRequestBehavior.AllowGet);
        }

public FindItemsResults GetEmails（字符串loginUsuario、字符串de、字符串assunto、字符串conteudo、WellKnownFolderName=WellKnownFolderName.Inbox）
{
ExchangeService服务=GetExchangeService（loginUsuario）；
var inbox=Folder.Bind（服务，WellKnownFolderName.inbox）；
SearchFilter sf=null；
//按发件人搜索
如果（！string.IsNullOrWhiteSpace（de））
sf=新的SearchFilter.SearchFilterCollection（LogicalOperator.And，新的SearchFilter.ContainsSubstring（EmailMessageSchema.From，de））；
//按主题搜索
如果（！string.IsNullOrWhiteSpace（assunto））
sf=新的SearchFilter.SearchFilterCollection（LogicalOperator.Or，新的SearchFilter.ContainsSubstring（EmailMessageSchema.Subject，Assto））；
//尸体搜查
如果（！string.IsNullOrWhiteSpace（conteudo））
sf=新的SearchFilter.SearchFilterCollection（LogicalOperator.Or，新的SearchFilter.ContainsSubstring（EmailMessageSchema.Body，conteudo））；
var视图=新项目视图（100）；
var emails=service.FindItems（意大利面、sf、视图）；
回复邮件；
}

返回“emails”时，Body抛出异常：Body=”（new System.Linq.SystemCore\u EnumerableDebugView（emails.Items[0]）。Body'抛出类型为“Microsoft.Exchange.WebServices.Data.ServiceObjectPropertyException”的异常。

EmailController.cs:

public FindItemsResults<Item> GetEmails(string loginUsuario, string de, string assunto, string conteudo, WellKnownFolderName pasta = WellKnownFolderName.Inbox)
        {
            ExchangeService service = GetExchangeService(loginUsuario);

            var inbox = Folder.Bind(service, WellKnownFolderName.Inbox);

            SearchFilter sf = null;

            // Search by Sender
            if (!string.IsNullOrWhiteSpace(de))
                sf = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.ContainsSubstring(EmailMessageSchema.From, de));

            // Search by Subject
            if (!string.IsNullOrWhiteSpace(assunto))
                sf = new SearchFilter.SearchFilterCollection(LogicalOperator.Or, new SearchFilter.ContainsSubstring(EmailMessageSchema.Subject, assunto));

            // Search by Body
            if (!string.IsNullOrWhiteSpace(conteudo))
                sf = new SearchFilter.SearchFilterCollection(LogicalOperator.Or, new SearchFilter.ContainsSubstring(EmailMessageSchema.Body, conteudo));

            var view = new ItemView(100);

            var emails = service.FindItems(pasta, sf, view);

            return emails;
        }

public JsonResult PesquisarEmails(string de, string assunto, string conteudo)
        {
            FindItemsResults<Item> emails = ServiceFactory.GetService<IComunicacaoService>(true).RecuperarEmails(UsuarioAutenticado.Funcionario.Login, de, assunto, conteudo);

            var lista = new List<EmailFormatado>();

            foreach (Item email in emails)
            {
                lista.Add(new EmailFormatado()
                { 
                    DataEmail = email.DateTimeReceived.FormatarDataCompleta(),
                    Remetente = (email as EmailMessage).From.Address,
                    AssuntoEmail = email.Subject,
                    Descricao = email.TextBody
            });
            }

            return Json(lista, JsonRequestBehavior.AllowGet);
        }

public JsonResult PesquisarEmails（字符串de、字符串assunto、字符串conteudo）
{
FindItemsResults emails=ServiceFactory.GetService（true）.RecuroperaRemails（通常为autenticado.functionario.Login、de、assto、conteudo）；
var lista=新列表（）；
foreach（邮件中的邮件）
{
添加（新的EmailFormatado（）
{ 
DataEmail=email.DateTimeReceived.FormataDataCompleta（），
提醒=（以EmailMessage的形式发送电子邮件）。From.Address，
AssuntoEmail=email.Subject，
descripcao=email.TextBody
});
}
返回Json（lista，JsonRequestBehavior.AllowGet）；
}

尝试使用“email.TextBody”和“email.Body”，但引发了一个异常： email.TextBody='email.TextBody'引发了类型为'Microsoft.Exchange.WebServices.Data.ServiceObjectPropertyException'的异常。

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有什么帮助吗？

findItem操作只返回项目属性的一个子集，而不会返回正文（from.address也不会返回）。因此，您需要在代码中加载每个项目（从性能角度来看，这是个坏主意）或LoadPropertiesFromItems，例如

service.LoadPropertiesForItems(emails, PropertySet.FirstClassProperties);

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findItem操作只返回项属性的子集，而不会返回正文（from.address也不会返回）。因此，您需要在代码中加载每个项（从性能角度来看这是个坏主意）或加载来自项的属性，例如

service.LoadPropertiesForItems(emails, PropertySet.FirstClassProperties);