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(VB.NET) OneNote - Get Page HTML Content

Download the HTML content of a OneNote page. Also iterates over the images and attachments on the OneNote page and downloads the content for each.

For more information, see https://docs.microsoft.com/en-us/graph/api/page-get?view=graph-rest-1.0

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' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http
Dim success As Boolean

' Implements the following CURL command:

' curl -X GET https://graph.microsoft.com/v1.0/me/onenote/pages/{id}/content?includeIDs=true \
'   -H 'authorization: Bearer ACCESS_TOKEN'

' Use the following online tool to generate HTTP code from a CURL command
' Convert a cURL Command to HTTP Source Code

' Adds the "Authorization: Bearer ACCESS_TOKEN" header.
http.AuthToken = "ACCESS_TOKEN"

http.SetUrlVar("page_id","0-d2298668edd74dccac7f821fa378bf64!41-3A33FCEB9B74CC15!20350")

Dim sbResponseBody As New Chilkat.StringBuilder
success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/onenote/pages/{$page_id}/content?includeIDs=true",sbResponseBody)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("HTML content:")
Debug.WriteLine(sbResponseBody.GetAsString())

Dim respStatusCode As Integer = http.LastStatus
Debug.WriteLine("Response Status Code = " & respStatusCode)
If (respStatusCode >= 400) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(http.LastHeader)
    Debug.WriteLine("Failed.")
    Exit Sub
End If


' Let's get the images and attached files.
' Here's sample HTML content with 2 images and one PDF attachment:

' <html lang="en-US">
' 	<head>
' 		<title>A page with rendered images and an attached file</title>
' 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
' 		<meta name="created" content="2020-10-23T12:00:00.0000000" />
' 	</head>
' 	<body data-absolute-enabled="true" style="font-family:Calibri;font-size:11pt">
' 		<div id="div:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{32}" data-id="_default" style="position:absolute;left:48px;top:120px;width:624px">
' 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{39}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image from an online source:</p>
' 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{1}" alt="an image on the page" width="500" height="500" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
' 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{43}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image uploaded as binary data:</p>
' 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{3}" alt="an image on the page" width="300" height="225" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
' 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{47}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s a file attachment:</p>
' 			<object data-attachment="FileName.pdf" type="application/pdf" data="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-9e685efb33a24a6a8de1b9c707d28385!1-3A33FCEB9B74CC15!20350/$value" />
' 		</div>
' 	</body>
' </html>

Dim xml As New Chilkat.Xml
xml.LoadSb(sbResponseBody,True)

' Iterate over each element in the XML.  Each time we find an "img" or "object", download the data.
' (The sbState is an object used to keep track of the current state of the traversal.)
Dim sbState As New Chilkat.StringBuilder
Dim url As String
Dim bd As New Chilkat.BinData
While xml.NextInTraversal2(sbState) <> False

    If (xml.TagEquals("img") = True) Then
        Debug.WriteLine("img id: " & xml.GetAttrValue("id"))
        url = xml.GetAttrValue("src")
        bd.Clear()
        success = http.QuickGetBd(url,bd)
        If (success = False) Then
            Debug.WriteLine(http.LastErrorText)
            Exit Sub
        End If

        Debug.WriteLine("Downloaded from " & url)
        Debug.WriteLine("----")
        ' If desired, bd.WriteFile to save the contents of bd to a file..
    End If


    If (xml.TagEquals("object") = True) Then
        Debug.WriteLine("data-attachment: " & xml.GetAttrValue("data-attachment"))
        Debug.WriteLine("type: " & xml.GetAttrValue("type"))
        url = xml.GetAttrValue("data")
        bd.Clear()
        success = http.QuickGetBd(url,bd)
        If (success = False) Then
            Debug.WriteLine(http.LastErrorText)
            Exit Sub
        End If

        Debug.WriteLine("Downloaded from " & url)
        Debug.WriteLine("----")
        ' If desired, bd.WriteFile to save the contents of bd to a file..
    End If

End While


Debug.WriteLine("Success.")

 

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