(VB.NET UWP/WinRT) Amazon Cognito - List Users

See more Amazon Cognito Examples

Lists the users in the Amazon Cognito user pool.

For more information, see https://docs.aws.amazon.com/cognito-user-identity-pools/latest/APIReference/API_ListUsers.html

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 rest As New Chilkat.Rest
Dim success As Boolean

Dim authAws As New Chilkat.AuthAws
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
' Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
authAws.Region = "us-west-2"
authAws.ServiceName = "cognito-idp"
' SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws)

' URL: https://cognito-idp.us-west-2.amazonaws.com/
Dim bTls As Boolean = True
Dim port As Integer = 443
Dim bAutoReconnect As Boolean = True
' Use the same region as specified above.
success = Await rest.ConnectAsync("cognito-idp.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine("ConnectFailReason: " & rest.ConnectFailReason)
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' Note: The above code does not need to be repeatedly called for each REST request.
' The rest object can be setup once, and then many requests can be sent.  Chilkat will automatically
' reconnect within a FullRequest* method as needed.  It is only the very first connection that is explicitly
' made via the Connect method.

' The following JSON is sent in the request body.

' {
'     "UserPoolId": "us-west-2_yt6WzO3SA"
' }
' 

Dim json As New Chilkat.JsonObject
json.UpdateString("UserPoolId","us-west-2_yt6WzO3SA")


rest.AddHeader("Content-Type","application/x-amz-json-1.0")
rest.AddHeader("X-Amz-Target","AWSCognitoIdentityProviderService.ListUsers")
rest.AddHeader("Accept-Encoding","identity")

Dim sbRequestBody As New Chilkat.StringBuilder
json.EmitSb(sbRequestBody)
Dim sbResponseBody As New Chilkat.StringBuilder
success = Await rest.FullRequestSbAsync("POST","/",sbRequestBody,sbResponseBody)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Dim respStatusCode As Integer = rest.ResponseStatusCode
Debug.WriteLine("response status code = " & respStatusCode)
If (respStatusCode <> 200) Then
    Debug.WriteLine("Response Status Code = " & respStatusCode)
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(rest.ResponseHeader)
    Debug.WriteLine("Response Body:")
    Debug.WriteLine(sbResponseBody.GetAsString())
    Exit Sub
End If


Dim jsonResponse As New Chilkat.JsonObject
jsonResponse.LoadSb(sbResponseBody)

jsonResponse.EmitCompact = False
Debug.WriteLine(jsonResponse.Emit())

' Sample JSON response:
' (Sample code for parsing the JSON response is shown below)

' Use this online tool to generate parsing code from sample JSON: 
' Generate Parsing Code from JSON

' {
'   "Users": [
'     {
'       "Attributes": [
'         {
'           "Name": "sub",
'           "Value": "1874cf28-00d3-4ac1-a24a-68dcb0cecf09"
'         },
'         {
'           "Name": "email_verified",
'           "Value": "true"
'         },
'         {
'           "Name": "phone_number_verified",
'           "Value": "true"
'         },
'         {
'           "Name": "phone_number",
'           "Value": "+16302581871"
'         },
'         {
'           "Name": "email",
'           "Value": "admin@chilkatsoft.com"
'         }
'       ],
'       "Enabled": true,
'       "UserCreateDate": 1.636404386657E9,
'       "UserLastModifiedDate": 1.636404386657E9,
'       "UserStatus": "FORCE_CHANGE_PASSWORD",
'       "Username": "matt"
'     },
'     {
' 	. . .
'     }
'   ]
' }


Dim Enabled As Boolean
Dim UserCreateDate As String
Dim UserLastModifiedDate As String
Dim UserStatus As String
Dim Username As String
Dim j As Integer
Dim count_j As Integer
Dim Name As String
Dim Value As String

Dim i As Integer = 0
Dim count_i As Integer = jsonResponse.SizeOfArray("Users")
While i < count_i
    jsonResponse.I = i
    Enabled = jsonResponse.BoolOf("Users[i].Enabled")
    UserCreateDate = jsonResponse.StringOf("Users[i].UserCreateDate")
    UserLastModifiedDate = jsonResponse.StringOf("Users[i].UserLastModifiedDate")
    UserStatus = jsonResponse.StringOf("Users[i].UserStatus")
    Username = jsonResponse.StringOf("Users[i].Username")
    j = 0
    count_j = jsonResponse.SizeOfArray("Users[i].Attributes")
    While j < count_j
        jsonResponse.J = j
        Name = jsonResponse.StringOf("Users[i].Attributes[j].Name")
        Value = jsonResponse.StringOf("Users[i].Attributes[j].Value")
        j = j + 1
    End While
    i = i + 1
End While