VB .NET Microsoft.Exchange.WebServices.Data任务-类-查找BillingInformation&电子邮件的里程值-语法 [英] VB .NET Microsoft.Exchange.WebServices.Data Task - Class - Find BillingInformation & Mileage value from Email - Syntax

问题描述

获取错误:服务(EmailMessage)返回的项目类型与请求的项目类型(任务)不兼容.

我正在尝试查找的值:

 Dim value As String
 Dim service1 As ExchangeService = New 
 ExchangeService(ExchangeVersion.Exchange2013, easternZone)
 service1.Credentials = New WebCredentials(UserID, Password)
 service1.Url = New Uri("https://outlook.office365.com/EWS/Exchange.asmx") 

 Dim findResults As FindItemsResults(Of Item) = service1.FindItems(folderID1, unReadFilter, New ItemView(50))

 For Each item As Item In findResults
    Dim val = item.Id.ToString()
   mytask1 = Task.Bind(service1, val)
   value = mytask1.Mileage.ToString() Next

这是通过Exchange .WebServices通过电子邮件发送的.数据类. 当我们向电子邮件属性添加值时，例如 村庄"或账单信息"-我们可以找到这些.

我收到以下错误:

-       ex  {"The item type returned by the service (EmailMessage) isn't compatible with the requested item type (Task)."}  System.Exception {Microsoft.Exchange.WebServices.Data.ServiceLocalException}

我正在使用Microsoft文档中的引用来编写代码:

https://docs.microsoft.com/zh-cn/dotnet/api/microsoft.exchange.webservices.data.task?view=exchange-ews-api

https://docs.microsoft.com/zh-cn/dotnet/api/microsoft.exchange.webservices.data.task.billinginformation?view=exchange-ews-api#Microsoft_Exchange_WebServices_Data_Task_BillingInformation

错误屏幕截图

解决方案

@ Glen，请在下面找到错误屏幕截图: 在尝试使用扩展属性定义时出现错误

Gets error : The item type returned by the service (EmailMessage) isn't compatible with the requested item type (Task).

I'm trying to find the value of :

 Dim value As String
 Dim service1 As ExchangeService = New 
 ExchangeService(ExchangeVersion.Exchange2013, easternZone)
 service1.Credentials = New WebCredentials(UserID, Password)
 service1.Url = New Uri("https://outlook.office365.com/EWS/Exchange.asmx") 

 Dim findResults As FindItemsResults(Of Item) = service1.FindItems(folderID1, unReadFilter, New ItemView(50))

 For Each item As Item In findResults
    Dim val = item.Id.ToString()
   mytask1 = Task.Bind(service1, val)
   value = mytask1.Mileage.ToString() Next

this is from an Email message through Exchange .WebServices. Data class . when we add values to Email attributes like "Millage " or "Billing information" - we can find these available .

I get the below error :

-       ex  {"The item type returned by the service (EmailMessage) isn't compatible with the requested item type (Task)."}  System.Exception {Microsoft.Exchange.WebServices.Data.ServiceLocalException}

I'm using the references from Microsoft docs to make the code :

https://docs.microsoft.com/en-us/dotnet/api/microsoft.exchange.webservices.data.task?view=exchange-ews-api

https://docs.microsoft.com/en-us/dotnet/api/microsoft.exchange.webservices.data.task.billinginformation?view=exchange-ews-api#Microsoft_Exchange_WebServices_Data_Task_BillingInformation

https://docs.microsoft.com/en-us/dotnet/api/microsoft.exchange.webservices.data.task.bind?view=exchange-ews-api

• Any help is extremely appreciated - I'm stuck from last couple of days .
• I'm a beginner to Exchange Service class . error screenshot

解决方案

@ Glen please find the error screenshot below : Gets Error when trying to use extended properties definition

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