Creating a new Calendar,Contacts,Tasks or Notes Sub Folder in EWS with Powershell

I've had a few questions about this in the past week so I thought I would put together a quick sample to show how you can create a new Folder is EWS and set the FolderClass so it appears as a Calendar, Contacts, Tasks, Notes or whatever other folder you want. This is a function so you can just cut and paste it into your own script to use. The full script looks like the following which has samples of using the function at the bottom.

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-Credhttp://www.blogger.com/blogger.g?blogID=7123450#editor/target=post;postID=2287688273890342518ential    
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 Create-Folder{  
74.     param (  
75.             $ParentFolderID = "$( throw 'Enter Id of Parent Folder' )",  
76.             $FolderName = "$( throw 'Enter Folder Name' )",  
77.             $FolderClass = "$( throw 'Enter Folder Class IPF.Note,IPF.Appointment,IPF.Contact,IPF.Task' )"  
78.           )  
79.     process{  
80.       
81.     $NewFolder = new-object Microsoft.Exchange.WebServices.Data.Folder($service)    
82.     $NewFolder.DisplayName = $FolderName    
83.     $NewFolder.FolderClass = $FolderClass  
84.     try{  
85.         $NewFolder.Save($ParentFolderID)  
86.         Write-Host $FolderName + " Folder Created "  
87.     }  
88.     catch{  
89.         "Error : " + $Error[0]  
90.     }  
91.       
92.     }  
93. }  
94. #Example use creating a Calendar subFolder  
95. $ParentId = new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Calendar,$MailboxName)     
96. Create-Folder -ParentFolderID $ParentId -FolderName "New Calendar Folder Name" -FolderClass "IPF.Appointment"  
97. #Example use creating a Contacts subFolder  
98. $ParentId = new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Contacts,$MailboxName)     
99. Create-Folder -ParentFolderID $ParentId -FolderName "New Contact Folder Name" -FolderClass "IPF.Contact"  
100. #Example use creating a Tasks subFolder  
101. $ParentId = new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Tasks,$MailboxName)     
102. Create-Folder -ParentFolderID $ParentId -FolderName "New Tasks Folder Name" -FolderClass "IPF.Task"  
103. #Example use creating a Notes subFolder  
104. $ParentId = new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Notes,$MailboxName)     
105. Create-Folder -ParentFolderID $ParentId -FolderName "New Notes Folder Name" -FolderClass "IPF.StickyNote"