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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) OneDrive -- Download to File

Downloads the contents of a DriveItem directly to a file in the local filesystem.

Note: This example requires Chilkat v9.5.0.68 or greater.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

' 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).

' (Make sure your token was obtained with the FilesRead or Files.ReadWrite scope.)
http.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN"

' Sends the following GET request:
' GET https://graph.microsoft.com/v1.0/me/drive/root:/{item-path}:/content

' Make sure to automatically follow redirects
http.FollowRedirects = True

' This example will download /Misc/wildlife/penguins.jpg
http.SetUrlVar("item_path","Misc/wildlife/penguins.jpg")

' Stream the response body directly to a local file.
Dim localPath As String = "qa_output/penguins.jpg"


Dim success As Boolean = Await http.DownloadAsync("https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}:/content",localPath)
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' If the response status code was not 200, then it failed.
If (http.LastStatus <> 200) Then
    Debug.WriteLine("Response Status Code = " & http.LastStatus)
    Debug.WriteLine("Failed.")
    Exit Sub
End If


' If we got here, then the file was successfully downloaded.
Debug.WriteLine("Download from OneDrive successful.")

 

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