VB.NET
VB.NET
Outlook -- Search Multiple Folders
See more Outlook Examples
I don't yet see how it's possible to do a recursive search of Outlook folders using the Microsoft Graph API. My best guess is to somehow use OData v4.0's $expand query option, but the hierarchical structure of the "mailFolder" and "messages" Microsoft Graph resources don't quite fit. Suggestions are welcome and can be sent to support@chilkatsoft.com.This example will iterate over a list of folder previously obtained by a recursive traversal of the Outlook mail folders. (See the link in the example code below.)
A separate search is performed on each desired folder, and the results are combined into a single result set.
Note: This example requires Chilkat v9.5.0.68 or greater.
This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com
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Dim success As Boolean = False
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.
Dim http As New Chilkat.Http
' Use your previously obtained access token here:
' See the following examples for getting an access token:
' Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
' Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
' Refresh Access Token (Azure AD v2.0 Endpoint).
' Refresh Access Token (Azure AD Endpoint).
http.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN"
' This example will iterate over the folders previously discovered by recursively traversing the Outlook folders
' as shown in this example: Outlook Recursive Folder Traversal)
' The XML map produced by the recursive traversal looks like this:
' <?xml version="1.0" encoding="utf-8"?>
' <hashtable>
' <e><k>/Sent Items</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEJAAAA</v></e>
' <e><k>/Inbox</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA</v></e>
' <e><k>/Junk Email</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEiAAAA</v></e>
' <e><k>/Inbox/xyz</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwEAAAA=</v></e>
' <e><k>/Inbox/abc/subFolderA/a</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwIAAAA=</v></e>
' <e><k>/Inbox/abc</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA=</v></e>
' <e><k>/Outbox</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgELAAAA</v></e>
' <e><k>/Inbox/abc/subFolderA</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwAAAQ==</v></e>
' <e><k>/Inbox/abc/subFolderB</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwMAAAA=</v></e>
' <e><k>/Archive</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAG8XunwAAAA=</v></e>
' <e><k>/Deleted Items</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEKAAAA</v></e>
' <e><k>/Drafts</k><v>AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEPAAAA</v></e>
' </hashtable>
' We'll iterate over the folders, and search all folders beginning with "/Inbox" (effectively, we're recursively searching
' everything under Inbox)
Dim xmlMap As New Chilkat.Xml
success = xmlMap.LoadXmlFile("qa_data/outlook/folderMap.xml")
If (success <> True) Then
Debug.WriteLine("Failed to load XML folder map.")
Exit Sub
End If
' We're going to return just the message id, subject, and FROM name/address.
http.SetUrlVar("select","id,subject,from")
' Our search will be for emails with the word "sample" in the subject.
http.SetUrlVar("filter","contains(subject,'sample')")
Dim json As New Chilkat.JsonObject
json.EmitCompact = False
Dim jsonCombined As New Chilkat.JsonObject
jsonCombined.EmitCompact = False
Dim sbResponse As New Chilkat.StringBuilder
Dim sbPath As New Chilkat.StringBuilder
Dim numFolders As Integer = xmlMap.NumChildren
Dim i As Integer = 0
Dim j As Integer = 0
Dim k As Integer = 0
While i < numFolders
xmlMap.I = i
sbPath.SetString(xmlMap.GetChildContent("e[i]|k"))
If (sbPath.StartsWith("/Inbox",True) = True) Then
Debug.WriteLine("------------------------------------------------------------------")
Debug.WriteLine("Searching " & sbPath.GetAsString())
' Search this mail folder..
http.SetUrlVar("folder_id",xmlMap.GetChildContent("e[i]|v"))
sbResponse.Clear()
success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse)
If ((success <> True) And (http.LastStatus = 0)) Then
Debug.WriteLine(http.LastErrorText)
Exit Sub
End If
json.LoadSb(sbResponse)
If (http.LastStatus <> 200) Then
Debug.WriteLine("HTTP response status = " & http.LastStatus)
Debug.WriteLine(json.Emit())
Debug.WriteLine("Failed.")
Exit Sub
End If
Debug.WriteLine(json.Emit())
' Each mail folder search will return JSON with a value array, which is non-empty if any matching messages were found:
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA')/messages(id,subject,from)",
' "value": [
' Individual messages, if any, are listed here.
' ]
' }
Dim numMessages As Integer = json.SizeOfArray("value")
j = 0
While j < numMessages
json.J = j
' Add this message to the final result set.
jsonCombined.K = k
jsonCombined.UpdateString("value[k].folderPath",sbPath.GetAsString())
jsonCombined.UpdateString("value[k].id",json.StringOf("value[j].id"))
jsonCombined.UpdateString("value[k].subject",json.StringOf("value[j].subject"))
jsonCombined.UpdateString("value[k].from.emailAddress.name",json.StringOf("value[j].from.emailAddress.name"))
jsonCombined.UpdateString("value[k].from.emailAddress.address",json.StringOf("value[j].from.emailAddress.address"))
k = k + 1
j = j + 1
End While
End If
i = i + 1
End While
' Show the final combined JSON search result.
Debug.WriteLine("------------------------------------------------------------------")
Debug.WriteLine("Combined Search Results:")
Debug.WriteLine(jsonCombined.Emit())
' Sample output for the above program:
' ------------------------------------------------------------------
' Searching /Inbox
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA')/messages(id,subject,from)",
' "value": [
' {
' "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADOpwfr\"",
' "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj10AAAA=",
' "subject": "A sample email with Amazon in the body",
' "from": {
' "emailAddress": {
' "name": "Chilkat Software",
' "address": "support@chilkatsoft.com"
' }
' }
' }
' ]
' }
'
' ------------------------------------------------------------------
' Searching /Inbox/xyz
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwEAAAA%3D')/messages(id,subject,from)",
' "value": [
' ]
' }
'
' ------------------------------------------------------------------
' Searching /Inbox/abc/subFolderA/a
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwIAAAA%3D')/messages(id,subject,from)",
' "value": [
' {
' "@odata.etag": "W/\"CQAAABYAAADn68XtMop0TpsYJGpfKXY9AADOpzfb\"",
' "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwIAAADn68XtMop0TpsYJGpfKXY9AAAAzombFQAAAA==",
' "subject": "Sample email from admin@chilkat.io",
' "from": {
' "emailAddress": {
' "name": "Chilkat Software",
' "address": "admin@chilkat.io"
' }
' }
' }
' ]
' }
'
' ------------------------------------------------------------------
' Searching /Inbox/abc
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAAA%3D')/messages(id,subject,from)",
' "value": [
' ]
' }
'
' ------------------------------------------------------------------
' Searching /Inbox/abc/subFolderA
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwAAAQ%3D%3D')/messages(id,subject,from)",
' "value": [
' ]
' }
'
' ------------------------------------------------------------------
' Searching /Inbox/abc/subFolderB
' {
' "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('me')/mailFolders('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgAuAAADsVyfxjDU406Ic4X7ill8xAEA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwMAAAA%3D')/messages(id,subject,from)",
' "value": [
' ]
' }
'
' ------------------------------------------------------------------
' Combined Search Results:
' {
' "value": [
' {
' "folderPath": "/Inbox",
' "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEMAAAA5_vF7TKKdE6bGCRqXyl2PQAAAM6Jj10AAAA=",
' "subject": "A sample email with Amazon in the body",
' "from": {
' "emailAddress": {
' "name": "Chilkat Software",
' "address": "support@chilkatsoft.com"
' }
' }
' },
' {
' "folderPath": "/Inbox/abc/subFolderA/a",
' "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huwIAAADn68XtMop0TpsYJGpfKXY9AAAAzombFQAAAA==",
' "subject": "Sample email from admin@chilkat.io",
' "from": {
' "emailAddress": {
' "name": "Chilkat Software",
' "address": "admin@chilkat.io"
' }
' }
' }
' ]
' }
'