Somebody asked a couple of weeks ago about creating Post Items using EWS and Powershell which I haven't posted a sample for previously. Given its the first day of the year an example of a post about how to create a post to wish everybody happy new year seems like good idea.
Creating a POST item using the EWS Managed API is pretty straight forward as their is a PostItem Class you can use. To create a post is a folder you just need to know the ewsID of the folder you want to create the POST in. So in EWS you need some code that will either search and find the Folder in the Mailbox you want to post to or the Public Folder you want to post to. I've created two sample one show how to create a post in Mailbox folders and the other in a Public folder. I've posted a download of the two sample here . The code for creating a POST in a Public folder looks like
Creating a POST item using the EWS Managed API is pretty straight forward as their is a PostItem Class you can use. To create a post is a folder you just need to know the ewsID of the folder you want to create the POST in. So in EWS you need some code that will either search and find the Folder in the Mailbox you want to post to or the Public Folder you want to post to. I've created two sample one show how to create a post in Mailbox folders and the other in a Public folder. I've posted a download of the two sample here . The code for creating a POST in a Public folder looks like
- ## Get the Mailbox to Access from the 1st commandline argument
- $MailboxName = $args[0]
- ## Load Managed API dll
- Add-Type -Path "C:\Program Files\Microsoft\Exchange\Web Services\2.0\Microsoft.Exchange.WebServices.dll"
- ## Set Exchange Version
- $ExchangeVersion = [Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2010_SP2
- ## Create Exchange Service Object
- $service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService($ExchangeVersion)
- ## Set Credentials to use two options are availible Option1 to use explict credentials or Option 2 use the Default (logged On) credentials
- #Credentials Option 1 using UPN for the windows Account
- $psCred = Get-Credential
- $creds = New-Object System.Net.NetworkCredential($psCred.UserName.ToString(),$psCred.GetNetworkCredential().password.ToString())
- $service.Credentials = $creds
- #Credentials Option 2
- #service.UseDefaultCredentials = $true
- ## Choose to ignore any SSL Warning issues caused by Self Signed Certificates
- ## Code From http://poshcode.org/624
- ## Create a compilation environment
- $Provider=New-Object Microsoft.CSharp.CSharpCodeProvider
- $Compiler=$Provider.CreateCompiler()
- $Params=New-Object System.CodeDom.Compiler.CompilerParameters
- $Params.GenerateExecutable=$False
- $Params.GenerateInMemory=$True
- $Params.IncludeDebugInformation=$False
- $Params.ReferencedAssemblies.Add("System.DLL") | Out-Null
- $TASource=@'
- namespace Local.ToolkitExtensions.Net.CertificatePolicy{
- public class TrustAll : System.Net.ICertificatePolicy {
- public TrustAll() {
- }
- public bool CheckValidationResult(System.Net.ServicePoint sp,
- System.Security.Cryptography.X509Certificates.X509Certificate cert,
- System.Net.WebRequest req, int problem) {
- return true;
- }
- }
- }
- '@
- $TAResults=$Provider.CompileAssemblyFromSource($Params,$TASource)
- $TAAssembly=$TAResults.CompiledAssembly
- ## We now create an instance of the TrustAll and attach it to the ServicePointManager
- $TrustAll=$TAAssembly.CreateInstance("Local.ToolkitExtensions.Net.CertificatePolicy.TrustAll")
- [System.Net.ServicePointManager]::CertificatePolicy=$TrustAll
- ## end code from http://poshcode.org/624
- ## 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
- #CAS URL Option 1 Autodiscover
- $service.AutodiscoverUrl($MailboxName,{$true})
- "Using CAS Server : " + $Service.url
- #CAS URL Option 2 Hardcoded
- #$uri=[system.URI] "https://casservername/ews/exchange.asmx"
- #$service.Url = $uri
- ## Optional section for Exchange Impersonation
- #$service.ImpersonatedUserId = new-object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SmtpAddress, $MailboxName)
- function FolderIdFromPath{
- param (
- $FolderPath = "$( throw 'Folder Path is a mandatory Parameter' )"
- )
- process{
- ## Find and Bind to Folder based on Path
- #Define the path to search should be seperated with \
- #Bind to the MSGFolder Root
- $folderid = new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::PublicFoldersRoot)
- $tfTargetFolder = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,$folderid)
- #Split the Search path into an array
- $fldArray = $FolderPath.Split("\")
- #Loop through the Split Array and do a Search for each level of folder
- for ($lint = 1; $lint -lt $fldArray.Length; $lint++) {
- #Perform search based on the displayname of each folder level
- $fvFolderView = new-object Microsoft.Exchange.WebServices.Data.FolderView(1)
- $SfSearchFilter = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo([Microsoft.Exchange.WebServices.Data.FolderSchema]::DisplayName,$fldArray[$lint])
- $findFolderResults = $service.FindFolders($tfTargetFolder.Id,$SfSearchFilter,$fvFolderView)
- if ($findFolderResults.TotalCount -gt 0){
- foreach($folder in $findFolderResults.Folders){
- $tfTargetFolder = $folder
- }
- }
- else{
- "Error Folder Not Found"
- $tfTargetFolder = $null
- break
- }
- }
- if($tfTargetFolder -ne $null){
- return $tfTargetFolder.Id.UniqueId.ToString()
- }
- }
- }
- #Example use
- $fldId = FolderIdFromPath -FolderPath "\aaaa\bbbb"
- if($fldId -ne "Error Folder Not Found"){
- $SubFolderId = new-object Microsoft.Exchange.WebServices.Data.FolderId($fldId)
- $SubFolder = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,$SubFolderId)
- $NewPost = New-Object Microsoft.Exchange.WebServices.Data.PostItem -ArgumentList $service
- $NewPost.Subject = "Happy New Year"
- $NewPost.Body = New-Object Microsoft.Exchange.WebServices.Data.MessageBody
- $NewPost.Body.BodyType = [Microsoft.Exchange.WebServices.Data.BodyType]::HTML
- $NewPost.Body.Text = "Happy New Year"
- $NewPost.Save($SubFolder.Id)
- Write-Host ("Created Post")
- }