Converting FolderId's from Get-MailboxFolderStatistics to use in EWS

If you are using the Exchange Managed Shell Get-MailboxFolderStatistics cmdlet to track down issues or report on folders and you want to be able to get that same folder in EWS to do something else with it here's is script that you can use to do this. This script uses the ConvertId Operation in EWS to convert the OWAId you get from EMS to a EWSId which you can then use in EWS to bind to the folder.

1. ## Get the Mailbox to Access from the 1st commandline argument  
2.   
3. $MailboxName = $args[0]  
4.  
5. ## Load Managed API dll    
6. Add-Type -Path "C:\Program Files\Microsoft\Exchange\Web Services\1.2\Microsoft.Exchange.WebServices.dll"    
7.    
8. ## Set Exchange Version    
9. $ExchangeVersion = [Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2010_SP2    
10.    
11. ## Create Exchange Service Object    
12. $service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService($ExchangeVersion)    
13.    
14. ## Set Credentials to use two options are availible Option1 to use explict credentials or Option 2 use the Default (logged On) credentials    
15.    
16. #Credentials Option 1 using UPN for the windows Account    
17. $psCred = Get-Credential    
18. $creds = New-Object System.Net.NetworkCredential($psCred.UserName.ToString(),$psCred.GetNetworkCredential().password.ToString())    
19. $service.Credentials = $creds        
20.    
21. #Credentials Option 2    
22. #service.UseDefaultCredentials = $true    
23.    
24. ## Choose to ignore any SSL Warning issues caused by Self Signed Certificates    
25.    
26. ## Code From http://poshcode.org/624  
27. ## Create a compilation environment  
28. $Provider=New-Object Microsoft.CSharp.CSharpCodeProvider  
29. $Compiler=$Provider.CreateCompiler()  
30. $Params=New-Object System.CodeDom.Compiler.CompilerParameters  
31. $Params.GenerateExecutable=$False  
32. $Params.GenerateInMemory=$True  
33. $Params.IncludeDebugInformation=$False  
34. $Params.ReferencedAssemblies.Add("System.DLL") | Out-Null  
35.   
36. $TASource=@' 
37.   namespace Local.ToolkitExtensions.Net.CertificatePolicy{ 
38.     public class TrustAll : System.Net.ICertificatePolicy { 
39.       public TrustAll() {  
40.       } 
41.       public bool CheckValidationResult(System.Net.ServicePoint sp, 
42.         System.Security.Cryptography.X509Certificates.X509Certificate cert,  
43.         System.Net.WebRequest req, int problem) { 
44.         return true; 
45.       } 
46.     } 
47.   } 
48. '@   
49. $TAResults=$Provider.CompileAssemblyFromSource($Params,$TASource)  
50. $TAAssembly=$TAResults.CompiledAssembly  
51.  
52. ## We now create an instance of the TrustAll and attach it to the ServicePointManager  
53. $TrustAll=$TAAssembly.CreateInstance("Local.ToolkitExtensions.Net.CertificatePolicy.TrustAll")  
54. [System.Net.ServicePointManager]::CertificatePolicy=$TrustAll  
55.  
56. ## end code from http://poshcode.org/624  
57.    
58. ## Set the URL of the CAS (Client Access Server) to use two options are availbe to use Autodiscover to find the CAS URL or Hardcode the CAS to use    
59.    
60. #CAS URL Option 1 Autodiscover    
61. $service.AutodiscoverUrl($MailboxName,{$true})    
62. "Using CAS Server : " + $Service.url     
63.     
64. #CAS URL Option 2 Hardcoded    
65.    
66. #$uri=[system.URI] "https://casservername/ews/exchange.asmx"    
67. #$service.Url = $uri      
68.    
69. ## Optional section for Exchange Impersonation    
70.    
71. #$service.ImpersonatedUserId = new-object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SmtpAddress, $MailboxName)   
72.   
73. function ConvertId{      
74.     param (  
75.             $OwaId = "$( throw 'OWAId is a mandatory Parameter' )"  
76.           )  
77.     process{  
78.         $aiItem = New-Object Microsoft.Exchange.WebServices.Data.AlternateId        
79.         $aiItem.Mailbox = $MailboxName        
80.         $aiItem.UniqueId = $OwaId     
81.         $aiItem.Format = [Microsoft.Exchange.WebServices.Data.IdFormat]::OwaId        
82.         $convertedId = $service.ConvertId($aiItem, [Microsoft.Exchange.WebServices.Data.IdFormat]::EwsId)   
83.         return $convertedId.UniqueId  
84.     }  
85. }  
86.  
87. ## Get Folder id from EMS and bind to the Folder in EWS
88.   
89. get-mailboxfolderstatistics $MailboxName | ForEach-Object{  
90.     # Bind to the Inbox Folder  
91.     $folderid= new-object Microsoft.Exchange.WebServices.Data.FolderId((Convertid $_.FolderId))     
92.     $ewsFolder = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,$folderid)  
93.     $ewsFolder  
94. }