读取Exchange的用户未读邮件数3种办法

lilingjie2015

　　1、开通IMAP服务，采用IMAP方法读取，需要提供用户和密码
IMAP_Client imap = new IMAP_Client();
//链接
imap.Connect(server, port, ssl);
//账户需要加上后缀名称,组合成"username@bzy.com"格式
//
account = string.Format("{0}{1}", account,ExchangeManageConfig.ExchangeDomail);
//验证账户
imap.Authenticate(account, password);

　　2、采用EWS读取邮件，默认取当前用户的登录认证方式（或提供用户和密码）
//
// TODO: 在此处添加构造函数逻辑
//实例化对象
_esb = new ExchangeServiceBinding();
//授权-默认权限
ICredentials creds = System.Net.CredentialCache.DefaultNetworkCredentials;
_esb.Credentials = creds;
/设置webservice的URL
_esb.Url = ExchangeManageConfig.ExchangeWebUrl;

　　3、采用EWS API方式。授权一个账户有模拟其他用户的权限
　　
1.安装 Exchange Web Services Managed API，当前版本1.1           
2.授权一个账户有模拟其他用户的权限，打开Exchange 2010 服务器在命令行中输入
New-ManagementRoleAssignment -Name:impersonationAssignmentName -Role:ApplicationImpersonation -User:serviceAccount　serviceAccount：就是我们要模拟其他人的账户protected void Page_Load(object sender, EventArgs e)
{
EwsConfig config = new EwsConfig();
config.ExchangeVersion=ExchangeVersion.Exchange2010_SP1;
config.EWSServiceUrl="https://********/EWS/exchange.asmx";
config.ExchangeAdministrator = "<UserName>";
config.ExchangeAdministratorPassword = "<PWD>";
config.DomainName = "<domainName>";
config.OtherUserName = "<otherUserName>";
//下面这句屏蔽服务器证书验证，防止页面报“根据验证过程，远程证书无效”的错误                                
ServicePointManager.ServerCertificateValidationCallback =
delegate(Object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; };
ExchangeService service = new ExchangeService(config.ExchangeVersion);
service.Credentials = new NetworkCredential(config.ExchangeAdministrator, config.ExchangeAdministratorPassword, config.DomainName);      
service.Url = new Uri(config.EWSServiceUrl);
//前提打开Exchange 2010服务器在命令行中输入：            
//New-ManagementRoleAssignment -Name:impersonationAssignmentName -Role:ApplicationImpersonation -User:<UserName>
service.ImpersonatedUserId = new ImpersonatedUserId(ConnectingIdType.PrincipalName, config.OtherUserName);
int unRead=Folder.Bind(service, WellKnownFolderName.Inbox).UnreadCount;
HttpContext.Current.Response.Write(config.OtherUserName+"未读邮件数："+unRead);
}
public struct EwsConfig
{
public ExchangeVersion ExchangeVersion;
public string EWSServiceUrl;
public string ExchangeAdministrator;
public string ExchangeAdministratorPassword;
public string DomainName;
public string OtherUserName;
}