如何查找收件箱中是否存在文件夾並創建該文件夾（如果不存在）

Question

剛開始在Exchange 2010上使用Exchange Webservices 1.1時，我無法找到有關如何找到特定文件夾的示例，如果不存在，請創建它。這是如何完成的？

Answer 1

在網絡上擺弄和研究了幾天後，嗯，我想通了：

FolderView fv = new FolderView(10); 

var findFoldersResults = service.FindFolders(
    WellKnownFolderName.Inbox, 
    new SearchFilter.SearchFilterCollection(
     LogicalOperator.Or, 
     new SearchFilter.ContainsSubstring(FolderSchema.DisplayName, "ERROR"), new SearchFilter.ContainsSubstring(FolderSchema.DisplayName, "ARCHIVE")), 
    fv); 

foreach (var folder in findFoldersResults) 
{ 
    if (folder is Folder) 
    { 
     if (folder.DisplayName.ToUpper() == "ARCHIVE") 
     { 
      archiveFolderID = folder.Id; 
     } 
     else if (folder.DisplayName.ToUpper() == "ERROR") 
     { 
      errorFolderID = folder.Id; 
     } 

    } 
} 
//if archive folder not found create and assign the variable to the folderID 
if (archiveFolderID == null) 
{ 
    Folder folder = new Folder(service); 
    folder.DisplayName = "ARCHIVE"; 
    folder.Save(WellKnownFolderName.Inbox); 
    archiveFolderID = folder.Id; 
} 
//if error folder not found create and assign the variable to the folderID 
if (errorFolderID == null) 
{ 
    Folder folder = new Folder(service); 
    folder.DisplayName = "ERROR"; 
    folder.Save(WellKnownFolderName.Inbox); 
    errorFolderID = folder.Id; 
}