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How to do FindFolder and MoveItem Operations of Exchange Web Services using VB.net

  • Artykuł

In continuations of my previous post How to do FindItem and GetItem Operations of Exchange Web Services using VB.net ; Here is the Exchange Web Services sample in VB.net to perform following task:

  • FindFolder(How to perform FindFolder Operation to get FolderId of specific folder for the root of the mailbox)
  • MoveItem (How to perform MoveItem Operation to move an item to the another folder within the mailbox)

NOTE: Following programming examples is for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This sample code assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. This sample code is provided for the purpose of illustration only and is not intended to be used in a production environment. 

 Private Sub cmdMove_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdMove.Click

         Try

             If lstMails.SelectedItems.Count = 1 Then

                 Dim itemID As New ItemIdType

                 itemID.Id = lstMails.SelectedItems(0).SubItems(3).Text

  

                 'Find the folderId to which we want to move item

                 Dim parentFolder As New DistinguishedFolderIdType

                 parentFolder.Id = DistinguishedFolderIdNameType.root

                 Dim tfTargetFolder As New FolderIdType

                 'Change the name of the folder we are searching for FolderID

                 tfTargetFolder = FindFolder(ServiceBinding, parentFolder, "Test")

  

                 Dim newItemID As New ItemIdType

                 'Move am Item based on ItemId and FolderID

                 newItemID = MoveItemtoTest(ServiceBinding, itemID.Id, tfTargetFolder)

                 Dim strId As String

                 strId = "New ItemID " + newItemID.Id.ToString

                 MessageBox.Show(strId, "Item Moved", MessageBoxButtons.OK, MessageBoxIcon.Information)

             Else

                 MessageBox.Show("Please select a item in list to move", "Item to Move", MessageBoxButtons.OK, MessageBoxIcon.Information)

             End If

         Catch ex As Exception

             MessageBox.Show(ex.Message)

         End Try

     End Sub

  

 Public Shared Function FindFolder(ByVal serviceBinding As ExchangeServiceBinding, ByVal fiFolderID As DistinguishedFolderIdType, ByVal fnFldName As String) As FolderIdType

  

         Dim rvFolderID As New FolderIdType

         ' Create the request and specify the travesal type

         Dim findFolderRequest As FindFolderType = New FindFolderType()

         findFolderRequest.Traversal = FolderQueryTraversalType.Deep

  

         ' Define the properties returned in the response

         Dim responseShape As FolderResponseShapeType = New FolderResponseShapeType()

         responseShape.BaseShape = DefaultShapeNamesType.Default

         findFolderRequest.FolderShape = responseShape

  

         ' Identify which folders to search

         Dim folderIDArray() As DistinguishedFolderIdType = New DistinguishedFolderIdType(1) {}

         folderIDArray(0) = New DistinguishedFolderIdType()

         folderIDArray(0).Id = fiFolderID.Id

  

         'Add Restriction for DisplayName

         Dim ffRestriction As New RestrictionType

         Dim ieToType As New IsEqualToType

         Dim diDisplayName As New PathToUnindexedFieldType

         diDisplayName.FieldURI = UnindexedFieldURIType.folderDisplayName

  

         Dim ciConstantType As New FieldURIOrConstantType

         Dim cvConstantValueType As New ConstantValueType

         cvConstantValueType.Value = fnFldName

         ciConstantType.Item = cvConstantValueType

         ieToType.Item = diDisplayName

         ieToType.FieldURIOrConstant = ciConstantType

         ffRestriction.Item = ieToType

         findFolderRequest.Restriction = ffRestriction

  

         ' Add the folders to search to the request

         findFolderRequest.ParentFolderIds = folderIDArray

  

         Try

             ' Send the request and get the response

             Dim findFolderResponse As FindFolderResponseType = serviceBinding.FindFolder(findFolderRequest)

             ' Get the response messages

             If findFolderResponse.ResponseMessages.Items(0).ResponseClass = ResponseClassType.Error Then

                 MessageBox.Show("Error Occured")

                 MessageBox.Show(findFolderResponse.ResponseMessages.Items(0).MessageText)

                 Return Nothing

             Else

                 Dim rmta() As ResponseMessageType = findFolderResponse.ResponseMessages.Items

                 Dim rmt As ResponseMessageType

                 For Each rmt In rmta

                     ' Cast to the correct response message type

                     Dim ffResponse As FindFolderResponseMessageType = rmt

                     Dim fFoundFolder As FolderType

                     For Each fFoundFolder In ffResponse.RootFolder.Folders

                         rvFolderID = fFoundFolder.FolderId

                         'MessageBox.Show(fFoundFolder.DisplayName)

                     Next

                 Next

                 'Return the FolderID of the last folder found

                 Return (rvFolderID)

             End If

         Catch e As Exception

             MessageBox.Show(e.Message)

             Return Nothing

         End Try

     End Function

 Public Shared Function MoveItemtoTest(ByVal serviceBinding As ExchangeServiceBinding, ByVal itemID As String, ByVal trgfldID As FolderIdType) As ItemIdType

  

         'Setup FolderId and ItemId to be passed to MoveItem

         Dim tfTargetFolder As TargetFolderIdType = New TargetFolderIdType()

         tfTargetFolder.Item = trgfldID

  

         Dim iiItemId As ItemIdType = New ItemIdType()

         iiItemId.Id = itemID

  

         'Create request to move Item and specify properties

         Dim miMoveItemRequest As MoveItemType = New MoveItemType()

         miMoveItemRequest.ItemIds = New ItemIdType(1) {}

         miMoveItemRequest.ItemIds(0) = iiItemId

         miMoveItemRequest.ToFolderId = tfTargetFolder

  

         Dim nID As New ItemIdType

         Try

             ' Send the request and get the response

             Dim miResponse As MoveItemResponseType = serviceBinding.MoveItem(miMoveItemRequest)

             If miResponse.ResponseMessages.Items(0).ResponseClass = ResponseClassType.Error Then

                 MessageBox.Show("Error Occured")

                 MessageBox.Show(miResponse.ResponseMessages.Items(0).MessageText)

                 Return Nothing

             Else

                 Dim iirmt As ItemInfoResponseMessageType = miResponse.ResponseMessages.Items(0)

                 If iirmt.Items.Items.Length > 0 Then

                     'Get updated ItemId from the Response Message

                     nID = iirmt.Items.Items(0).ItemId

                     MessageBox.Show("Item Moved")

                     'Return updated ItemID

                     Return nID

                 Else

                     Return Nothing

                 End If

             End If

         Catch e As Exception

             MessageBox.Show(e.Message)

             Return Nothing

         End Try

     End Function

We can refer to the following articles related to the EWS:

- Finding Folders (Exchange Web Services) https://msdn.microsoft.com/en-us/library/aa493892.aspx

**MoveItemType Class**  
[https://msdn.microsoft.com/en-us/library/exchangewebservices.moveitemtype.aspx](https://msdn.microsoft.com/en-us/library/exchangewebservices.moveitemtype.aspx "https://msdn.microsoft.com/en-us/library/exchangewebservices.moveitemtype.aspx")   
**Note:** Microsoft Exchange Server 2007 Service Pack 1 (SP1) with Update Rollup 4 (RU4) applied introduces a change in the [MoveItemResponseType](https://msdn.microsoft.com/en-us/library/exchangewebservices.moveitemresponsetype.aspx) class. The item identifier of the new item is returned in the response message.

While we can workout more with Exchange Web Service auto generated proxies but don’t forget to have look at Microsoft Exchange Web Services (EWS) Managed API 1.0 to do stuff with less sweat. :)

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