在这个月 Aspose.Email for .NET邮件处理控件发布了新的16.10版本，通过该控件开发人员可以使用API来像OutLook一样在应用程序中对邮件进行发送、接收、读取和处理，在新的版本中开发人员可以通过API获取联系人信息和扩展属性，如何获取联系人的扩展信息可以参考下面的部分代码：

IEWSClient client = EWSClient.GetEWSClient("https://outlook.office365.com/ews/exchange.asmx", "testUser", "pwd", "domain");

//The required extended properties must be added in order to create or read them from the Exchange Server

string[] extraFields = new string[] {{ "User Field 1", "User Field 2", "User Field 3", "User Field 4" }};

foreach (string extraField in extraFields)

    client.ContactExtendedPropertiesDefinition.Add(extraField);

 

//Create a test contact on the Exchange Server

Contact contact = new Contact();

contact.DisplayName = "EMAILNET-38433 - " + Guid.NewGuid().ToString();

foreach (string extraField in extraFields)

    contact.ExtendedProperties.Add(extraField, extraField);

 

string contactId = client.CreateContact(contact);

 

//retrieve the contact back from the server after some time

Thread.Sleep(5000);

contact = client.GetContact(contactId);

 

//Parse the extended properties of contact 

foreach (string extraField in extraFields)

    if (contact.ExtendedProperties.ContainsKey(extraField)) 

        Console.WriteLine(contact.ExtendedProperties[extraField].ToString());