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Visual Basic 6.0 Examples

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(Visual Basic 6.0) Azure Storage: List Blobs

Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

'  Azure Blob Service Example: List the blobs in a specified container.
'  See also: https://msdn.microsoft.com/en-us/library/azure/dd135734.aspx

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

Dim rest As New ChilkatRest

'  Connect to the Azure Storage Blob Service
Dim bTls As Long
bTls = 1
Dim port As Long
port = 443
Dim bAutoReconnect As Long
bAutoReconnect = 1
'  In this example, the storage account name is "chilkat".
Dim success As Long
success = rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect)
If (success <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

'  Provide Azure Cloud credentials for the REST call.
Dim azAuth As New ChilkatAuthAzureStorage
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 = "Blob"
'  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.

'  The expected success response is a 200 response status code with an XML response body.
'  In this example, we are listing the blobs in the container named "mycontainer".
Dim responseStr As String
responseStr = rest.FullRequestNoBody("GET","/mycontainer?restype=container&comp=list")
If (rest.LastMethodSuccess <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

'  When successful, the Azure Storage service will respond with a 200 response status code,
'  with an XML response body.

If (rest.ResponseStatusCode <> 200) Then
    '  Examine the request/response to see what happened.
    Debug.Print "response status code = " & rest.ResponseStatusCode
    Debug.Print "response status text = " & rest.ResponseStatusText
    Debug.Print "response header: " & rest.ResponseHeader
    Debug.Print "response body (if any): " & responseStr
    Debug.Print "---"
    Debug.Print "LastRequestStartLine: " & rest.LastRequestStartLine
    Debug.Print "LastRequestHeader: " & rest.LastRequestHeader
    Exit Sub
End If

'  Load the XML response for parsing.
'  An example of the response XML is shown below.
Dim xml As New ChilkatXml
success = xml.LoadXml(responseStr)

Debug.Print xml.GetXml()

'  Let's iterate over the blobs...

Dim lastMod As New CkDateTime

Dim numBlobs As Long
numBlobs = xml.NumChildrenAt("Blobs")
Dim i As Long
i = 0
Do While i < numBlobs
    Debug.Print "---- Blob " & i & " ----"
    xml.I = i
    Debug.Print "Name: " & xml.GetChildContent("Blobs|Blob[i]|Name")
    Debug.Print "Content-Length: " & xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Length")
    Debug.Print "Content-Type: " & xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Type")
    Debug.Print "Content-MD5: " & xml.GetChildContent("Blobs|Blob[i]|Properties|Content-MD5")
    Debug.Print "BlobType: " & xml.GetChildContent("Blobs|Blob[i]|Properties|BlobType")
    Debug.Print "LeaseStatus: " & xml.GetChildContent("Blobs|Blob[i]|Properties|LeaseStatus")
    success = lastMod.SetFromRfc822(xml.GetChildContent("Blobs|Blob[i]|Properties|Last-Modified"))
    Dim dt As DtObj
    Set dt = lastMod.GetDtObj(1)
    Debug.Print "Last-Modified YMD: " & dt.Year & "," & dt.Month & "," & dt.Day

    i = i + 1
Loop

Debug.Print "-------------------------"

'  Use the ChilkatPath method to get information for a specific blob:

'  For example, let's say we want the Last-Modified date/time for
'  the blob named "helloWorld.txt"
Dim lastModStr As String
lastModStr = xml.ChilkatPath("/C/Name,helloWorld.txt|..|Properties|Last-Modified|*")
Debug.Print "helloWorld.txt Last-Modified: " & lastModStr

Debug.Print "Success."

'  <?xml version="1.0" encoding="utf-8" ?>
'  <EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/" ContainerName="test">
'      <Blobs>
'          <Blob>
'              <Name>hamletC.xml</Name>
'              <Properties>
'                  <Last-Modified>Mon, 02 May 2016 23:50:30 GMT</Last-Modified>
'                  <Etag>0x8D372E48B6D323A</Etag>
'                  <Content-Length>279658</Content-Length>
'                  <Content-Type>application/octet-stream</Content-Type>
'                  <Content-Encoding />
'                  <Content-Language />
'                  <Content-MD5>4E6prI9haw81xadSLeEj3Q==</Content-MD5>
'                  <Cache-Control />
'                  <Content-Disposition>attachment; filename="hamletC.xml"</Content-Disposition>
'                  <BlobType>BlockBlob</BlobType>
'                  <LeaseStatus>unlocked</LeaseStatus>
'                  <LeaseState>available</LeaseState>
'              </Properties>
'          </Blob>
'          <Blob>
'              <Name>helloWorld.txt</Name>
'              <Properties>
'                  <Last-Modified>Mon, 02 May 2016 15:21:55 GMT</Last-Modified>
'                  <Etag>0x8D3729D7EE38299</Etag>
'                  <Content-Length>12</Content-Length>
'                  <Content-Type>application/octet-stream</Content-Type>
'                  <Content-Encoding />
'                  <Content-Language />
'                  <Content-MD5>7Qdih1MuhjZehB6Sv8UNjA==</Content-MD5>
'                  <Cache-Control />
'                  <Content-Disposition>attachment; filename="helloWorld.txt"</Content-Disposition>
'                  <BlobType>BlockBlob</BlobType>
'                  <LeaseStatus>unlocked</LeaseStatus>
'                  <LeaseState>available</LeaseState>
'              </Properties>
'          </Blob>
'          <Blob>
'              <Name>thisIsATest.txt</Name>
'              <Properties>
'                  <Last-Modified>Tue, 03 May 2016 00:22:13 GMT</Last-Modified>
'                  <Etag>0x8D372E8F9B2A62E</Etag>
'                  <Content-Length>1600</Content-Length>
'                  <Content-Type>application/octet-stream</Content-Type>
'                  <Content-Encoding />
'                  <Content-Language />
'                  <Content-MD5>FhgUXYfePg2ItsraPmz0Xg==</Content-MD5>
'                  <Cache-Control />
'                  <Content-Disposition>attachment; filename="thisIsATest.txt"</Content-Disposition>
'                  <BlobType>BlockBlob</BlobType>
'                  <LeaseStatus>unlocked</LeaseStatus>
'                  <LeaseState>available</LeaseState>
'              </Properties>
'          </Blob>
'      </Blobs>
'      <NextMarker />
'  </EnumerationResults>
' 

 

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