Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

VB.NET UWP/WinRT Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Azure Cloud Storage
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(VB.NET UWP/WinRT) Box.com Upload File

Demonstrates how to upload a file to box.com.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

Dim rest As New Chilkat.Rest
Dim success As Boolean

'    Provide a previously obtained OAuth2 access token.
Dim oauth2 As New Chilkat.OAuth2
oauth2.AccessToken = "BOX_ACCESS_TOKEN"
rest.SetAuthOAuth2(oauth2)

'  First, make the initial connection.
'  A single REST object, once connected, can be used for many Box REST API calls.
'  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
'  then it will be automatically re-established as needed.
Dim bAutoReconnect As Boolean = True

'  ----------------------------------------------------------------------
'  IMPORTANT: Note that the domain is "upload.box.com", not "api.box.com"
'  ----------------------------------------------------------------------
success = Await rest.ConnectAsync("upload.box.com",443,True,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  The request body uses the "multipart/form-data" format to transmit two "parts".
'  The first part is called "attributes" and contains a JSON object with information about the file, including the name of the file
'  and the ID of the parent folder. The second part contains the contents of the file.
'  (Note that the name of the second "part" is ignored.)

rest.AddHeader("Content-Type","multipart/form-data")

'  Provide the content for each part of the request...


'  First the JSON attributes.  Use "0" for the root folder.
'    {"name":"penguins.jpg", "parent":{"id":"0"}}
Dim jsonAttr As New Chilkat.JsonObject
jsonAttr.UpdateString("name","penguins.jpg")
jsonAttr.UpdateString("parent.id","0")

rest.PartSelector = "1"
rest.AddHeader("Content-Disposition","form-data; name=""attributes""; ")
rest.SetMultipartBodyString(jsonAttr.Emit())

rest.PartSelector = "2"
rest.AddHeader("Content-Disposition","form-data; name=""file""; filename=""penguins.jpg""")
'  "application/octet-stream" can be safely used for any type file..
rest.AddHeader("Content-Type","application/octet-stream")

'  Load the file into a binary data object, and then upload..
Dim fileDataObj As New Chilkat.BinData
fileDataObj.LoadFile("qa_data/jpg/penguins.jpg")
rest.SetMultipartBodyBd(fileDataObj)

'  Restore the PartSelector to "0" (for safety, in case something else sends another request on this object)
rest.PartSelector = "0"

'  Send the multipart/form-data request, which uploads the file contained in fileDataObj
Dim responseBody As String = Await rest.FullRequestMultipartAsync("POST","/api/2.0/files/content")
If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  A 201 is received for a successful upload
If (rest.ResponseStatusCode <> 201) Then
    Debug.WriteLine("Box.com upload failed.")
    Debug.WriteLine("Request header:")
    Debug.WriteLine(rest.LastRequestHeader)
    Debug.WriteLine("---")
    Debug.WriteLine("Response status code = " & rest.ResponseStatusCode)
    Debug.WriteLine("Response body:")
    Debug.WriteLine(responseBody)
    Exit Sub
End If


Debug.WriteLine("File uploaded.")

 

© 2000-2022 Chilkat Software, Inc. All Rights Reserved.