(VB.NET) SNS List Topics

List the existing SNS topics.

See SNS List Topics for more information.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' 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.
' such as https://sns.us-west-2.amazonaws.com/
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
Dim success As Boolean = rest.Connect("sns.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)

' Provide AWS credentials for the REST call.
Dim authAws As New Chilkat.AuthAws
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
' the region should match our URL above..
authAws.Region = "us-west-2"
authAws.ServiceName = "sns"

rest.SetAuthAws(authAws)

rest.AddQueryParam("Action","ListTopics")

Dim responseXml As String = rest.FullRequestNoBody("GET","/")
If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' A successful response will have a status code equal to 200.
If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("response status code = " & rest.ResponseStatusCode)
    Debug.WriteLine("response status text = " & rest.ResponseStatusText)
    Debug.WriteLine("response header: " & rest.ResponseHeader)
    Debug.WriteLine("response body: " & responseXml)
    Exit Sub
End If


' Examine the successful XML response (shown below)
Dim xml As New Chilkat.Xml
xml.LoadXml(responseXml)
Debug.WriteLine(xml.GetXml())

' To iterate over the TopicArn's
Dim notUsed As String = xml.ChilkatPath("ListTopicsResult|Topics|$")
Dim i As Integer = 0
Dim numTopics As Integer = xml.NumChildren
While i < numTopics
    xml.GetChild2(i)
    Debug.WriteLine(xml.GetChildContent("TopicArn"))
    xml.GetParent2()
    i = i + 1
End While
xml.GetRoot2()

' A sample successful response:
' <?xml version="1.0" encoding="utf-8" ?>
' <ListTopicsResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
'     <ListTopicsResult>
'         <Topics>
'             <member>
'                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat</TopicArn>
'             </member>
'             <member>
'                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat123</TopicArn>
'             </member>
'             <member>
'                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkatses</TopicArn>
'             </member>
'         </Topics>
'     </ListTopicsResult>
'     <ResponseMetadata>
'         <RequestId>54514f94-b07d-5f0b-9c8a-1ff85ff4ac65</RequestId>
'     </ResponseMetadata>
' </ListTopicsResponse>