VB.NET

S3 List Bucket Objects (using Chilkat REST)

See more Amazon S3 (new) Examples

Demonstrates how to fetch a list of objects in an S3 bucket. VB.NET

Dim success As Boolean = False

' 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 Amazon AWS REST server.
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
success = rest.Connect("s3.amazonaws.com",port,bTls,bAutoReconnect)

' ----------------------------------------------------------------------------
' Important: For buckets created in regions outside us-east-1,
' there are three important changes that need to be made.
' See Working with S3 Buckets in Non-us-east-1 Regions for the details.
' ----------------------------------------------------------------------------

' Provide AWS credentials for the REST call.
Dim authAws As New Chilkat.AuthAws
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
authAws.ServiceName = "s3"
success = rest.SetAuthAws(authAws)

'  Set the bucket name via the HOST header.
'  In this case, the bucket name is "chilkat100".
rest.Host = "chilkat100.s3.amazonaws.com"

Dim sbResponse As New Chilkat.StringBuilder
success = rest.FullRequestNoBodySb("GET","/",sbResponse)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If



Dim statusCode As Integer = rest.ResponseStatusCode
Debug.WriteLine("Response status code = " & statusCode)

Dim xml As New Chilkat.Xml
xml.LoadSb(sbResponse,True)
Debug.WriteLine(xml.GetXml())

If (statusCode <> 200) Then
    Debug.WriteLine("Failed.  See error information in the XML.")
    Exit Sub
End If


' Use this online tool to generate code from sample XML: 
' Generate Code to Create XML

Dim Key As String
Dim LastModified As String
Dim ETag As String
Dim SizeDecimalStr As String
Dim ID As String
Dim DisplayName As String
Dim StorageClass As String

Dim Name As String = xml.GetChildContent("Name")
Dim MaxKeys As Integer = xml.GetChildIntValue("MaxKeys")
Dim IsTruncated As String = xml.GetChildContent("IsTruncated")
Dim i As Integer = 0
Dim count_i As Integer = xml.NumChildrenHavingTag("Contents")
While i < count_i
    xml.I = i
    Key = xml.GetChildContent("Contents[i]|Key")
    LastModified = xml.GetChildContent("Contents[i]|LastModified")
    ETag = xml.GetChildContent("Contents[i]|ETag")
    SizeDecimalStr = xml.GetChildContent("Contents[i]|Size")
    ID = xml.GetChildContent("Contents[i]|Owner|ID")
    DisplayName = xml.GetChildContent("Contents[i]|Owner|DisplayName")
    StorageClass = xml.GetChildContent("Contents[i]|StorageClass")
    i = i + 1
End While