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(VB.NET UWP/WinRT) Azure File Service: Download a Text File into a String

Downloads a text file into a string variable.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

'  Azure File Service Example: Download Text File into String
'  See:  https://docs.microsoft.com/en-us/rest/api/storageservices/get-file

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

Dim rest As New Chilkat.Rest

'  Connect to the Azure Storage Blob Service
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
'  In this example, the storage account name is "chilkat".
Dim success As Boolean = Await rest.ConnectAsync("chilkat.file.core.windows.net",port,bTls,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  Provide Azure Cloud credentials for the REST calls.
Dim azAuth As New Chilkat.AuthAzureStorage
azAuth.AccessKey = "AZURE_ACCESS_KEY"
'  The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account = "chilkat"
azAuth.Scheme = "SharedKey"
azAuth.Service = "File"
'  This causes the "x-ms-version: 2015-02-21" header to be automatically added.
azAuth.XMsVersion = "2015-02-21"
success = rest.SetAuthAzureStorage(azAuth)

'  Note: The application does not need to explicitly set the following
'  headers: x-ms-date, Authorization.  These headers
'  are automatically set by Chilkat.

'  Send a GET request to download the file "hamlet.xml" to a StringBuilder object.
'  (The share name is "pip")
Dim sbFileContents As New Chilkat.StringBuilder
success = Await rest.FullRequestNoBodySbAsync("GET","/pip/xmlFiles/hamlet.xml",sbFileContents)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


'  When successful, the response status will be 200.
'  If a non-success status code is returned, then the sbFileContents actually contains the XML error message.
If (rest.ResponseStatusCode <> 200) Then
    '  Examine the request/response to see what happened.
    Debug.WriteLine("response status code = " & rest.ResponseStatusCode)
    Debug.WriteLine("response status text = " & rest.ResponseStatusText)
    Debug.WriteLine("response header: " & rest.ResponseHeader)
    Debug.WriteLine("response body (if any): " & sbFileContents.GetAsString())
    Debug.WriteLine("---")
    Debug.WriteLine("LastRequestStartLine: " & rest.LastRequestStartLine)
    Debug.WriteLine("LastRequestHeader: " & rest.LastRequestHeader)
    Exit Sub
End If


Debug.WriteLine("Length of downloaded string = " & sbFileContents.Length)

Dim strFileContents As String = sbFileContents.GetAsString()
Debug.WriteLine(strFileContents)

sbFileContents.WriteFile("qa_output/hamlet.xml","utf-8",False)

 

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