EWS编程问题二：如何利用EWS读取Exchange里面相应用户的未读邮件数量（解决）

pgup12

最近几个项目都碰到如何读取Exchange中，登录域用户的未读邮件数量问题，查了一些文章这个问题终于解决掉。现在将源代码放在这里。首先新建一个项目，控制台应用程序，WinForm或者WebPart，网站都可以。然后我们添加Exchange的WebService引用，这里可以完成很多对Exchange邮箱的操作，可以分别读取相应文件夹里面的东西，甚至是邮件的内容等等，当然，这肯定是需要用户的用户名和密码才能完成，不然这个Exchange就不安全了，O(∩_∩)O~
        在添加Exchange的WebService时有个需要注意的问题，不然你是不能找到ExchangeServiceBinding这个类的。请参考这篇文章。剩下的代码如下：
　　调用部分的代码：
　　

代码

ServicePointManager.ServerCertificateValidationCallback = delegate(Object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; };
ExchangeServiceBinding service = new ExchangeServiceBinding ();
service.RequestServerVersionValue = new RequestServerVersion();
service.RequestServerVersionValue.Version = ExchangeVersionType.Exchange2010;
service.EnableDecompression = true;
service.Credentials = new NetworkCredential("username", "password", "domain");
service.Url = @https://192.168.100.11/EWS/exchange.asmx;

int merCurrentCount = GetUnreadFolderItemsCount(service, "Inbox");
　　
　　
       涉及到的两个方法：


代码

public int GetUnreadFolderItemsCount(ExchangeServiceBinding service, string folderName)
       {
           int unReadCount = -1;
           // Identify the folder properties to return.
           FolderResponseShapeType properties = new FolderResponseShapeType();
           PathToUnindexedFieldType ptuft = new PathToUnindexedFieldType();
           ptuft.FieldURI = UnindexedFieldURIType.folderManagedFolderInformation;
           PathToUnindexedFieldType[] ptufts = new PathToUnindexedFieldType[1] { ptuft };
           properties.AdditionalProperties = ptufts;
           properties.BaseShape = DefaultShapeNamesType.AllProperties;
           // Form the get folder request.
           BaseFolderIdType p_folder = FindFolderID(service, folderName);
           GetFolderType request = new GetFolderType();
           request.FolderIds = new BaseFolderIdType[1] { p_folder };
           request.FolderShape = properties;
           // Send the request and get the response.
           GetFolderResponseType response = service.GetFolder(request);
           ArrayOfResponseMessagesType aormt = response.ResponseMessages;
           ResponseMessageType[] rmta = aormt.Items;
           foreach (ResponseMessageType rmt in rmta)
           {
               if (rmt.ResponseClass == ResponseClassType.Error)
               {
                   throw new Exception(rmt.MessageText);
               }
               else
               {
                   FolderInfoResponseMessageType firmt;
                   firmt = (rmt as FolderInfoResponseMessageType);
                   BaseFolderType[] folders = firmt.Folders;
                   foreach (BaseFolderType rfolder in folders)
                   {
                       if (rfolder is FolderType)
                       {
                           FolderType myFolder;
                           myFolder = (rfolder as FolderType);
                           if (myFolder.UnreadCountSpecified)
                           {
                               unReadCount = myFolder.UnreadCount;
                           }
                       }
                   }
               }
           }
           return unReadCount;
       }
       public static FolderIdType FindFolderID(ExchangeServiceBinding service, String folderName)
       {
           DistinguishedFolderIdType objSearchRootFolder = new DistinguishedFolderIdType();
           objSearchRootFolder.Id = DistinguishedFolderIdNameType.msgfolderroot;
           FindFolderType requestFindFolder = new FindFolderType();
           requestFindFolder.Traversal = FolderQueryTraversalType.Deep;
           requestFindFolder.ParentFolderIds = new DistinguishedFolderIdType[] { objSearchRootFolder };
           requestFindFolder.FolderShape = new FolderResponseShapeType();
           requestFindFolder.FolderShape.BaseShape = DefaultShapeNamesType.IdOnly;
           //Search filter definition
           requestFindFolder.Restriction = new RestrictionType();
           #region Contains expression
           ContainsExpressionType objContainsExpression = new ContainsExpressionType();
           objContainsExpression.ContainmentMode = ContainmentModeType.FullString;
           objContainsExpression.ContainmentModeSpecified = true;
           objContainsExpression.ContainmentComparison = ContainmentComparisonType.Exact;
           objContainsExpression.ContainmentComparisonSpecified = true;
           PathToUnindexedFieldType objFieldFolderName = new PathToUnindexedFieldType();
           objFieldFolderName.FieldURI = UnindexedFieldURIType.folderDisplayName;
           objContainsExpression.Item = objFieldFolderName;
           objContainsExpression.Constant = new ConstantValueType();
           objContainsExpression.Constant.Value = folderName;
           #endregion Contains expression
           requestFindFolder.Restriction.Item = objContainsExpression;
           FindFolderResponseType objFindFolderResponse =
               service.FindFolder(requestFindFolder);
           if (objFindFolderResponse.ResponseMessages.Items.Length == 0)
               return null;
           foreach (ResponseMessageType responseMsg in
               objFindFolderResponse.ResponseMessages.Items)
           {
               if (responseMsg.ResponseClass == ResponseClassType.Success)
               {
                   FindFolderResponseMessageType objFindResponse =
                       responseMsg as FindFolderResponseMessageType;
                   foreach (
                       BaseFolderType objFolderType in objFindResponse.RootFolder.Folders)
                   {
                       return objFolderType.FolderId;
                   }
               }
           }
           return null;
       }
　　

　　
　　参考文章：Get the Unread count of the Inbox of Exchange 2010/2007, using web services