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VB.NET UWP/WinRT Web API Examples

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(VB.NET UWP/WinRT) QuickBooks - Query a Customer

Demonstrates how to query QuickBooks customers.

A sample JSON response body is available at Sample Quickbooks Customer Query JSON Response

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

' This example also assumes an OAuth1 access token was previously fetched.
' and saved in a JSON file.  See the Chilkat online examples at example-code.com
' for Quickbooks OAuth1 examples (in the Quickbooks and OAuth1 categories)
' 

' First get our previously obtained access token.
Dim jsonToken As New Chilkat.JsonObject
Dim success As Boolean = jsonToken.LoadFile("qa_data/tokens/quickbooks.json")

Dim oauth1 As New Chilkat.OAuth1
oauth1.ConsumerKey = "QUICKBOOKS_CONSUMER_KEY"
oauth1.ConsumerSecret = "QUICKBOOKS_CONSUMER_SECRET"
oauth1.Token = jsonToken.StringOf("oauth_token")
oauth1.TokenSecret = jsonToken.StringOf("oauth_token_secret")

Dim rest As New Chilkat.Rest

' Connect using TLS.
' A single REST object, once connected, can be used for many Quickbooks REST API calls.
' The auto-reconnect indicates that if the already-established HTTPS connection is closed,
' then it will be automatically re-established as needed.
Dim bAutoReconnect As Boolean = True
success = Await rest.ConnectAsync("sandbox-quickbooks.api.intuit.com",443,True,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


rest.SetAuthOAuth1(oauth1,False)

' The company ID is the realmId
Dim sbPath As New Chilkat.StringBuilder
sbPath.Append("/v3/company/<companyID>/query")
Dim numReplacements As Integer = sbPath.Replace("<companyID>",jsonToken.StringOf("realmId"))

rest.AddHeader("Accept","application/json")
rest.AllowHeaderFolding = False

Dim query As String = "select * from Customer"
rest.AddQueryParam("query",query)

Dim responseBody As String = Await rest.FullRequestNoBodyAsync("GET",sbPath.GetAsString())
If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' We should expect a 200 response if successful.
If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine("Request Header: ")
    Debug.WriteLine(rest.LastRequestHeader)
    Debug.WriteLine("----")
    Debug.WriteLine("Response StatusCode = " & rest.ResponseStatusCode)
    Debug.WriteLine("Response StatusLine: " & rest.ResponseStatusText)
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(rest.ResponseHeader)
    Debug.WriteLine(responseBody)
    Exit Sub
End If


' Load the JSON response into a JSON object for parsing.
' A sample JSON response is shown below.
Dim json As New Chilkat.JsonObject
json.EmitCompact = False
json.Load(responseBody)

' Iterate over each customer returned.
Dim numRecords As Integer = json.SizeOfArray("QueryResponse.Customer")
Dim i As Integer = 0
While i < numRecords

    json.I = i
    Debug.WriteLine("Name: " & json.StringOf("QueryResponse.Customer[i].FullyQualifiedName"))
    Debug.WriteLine("Id: " & json.StringOf("QueryResponse.Customer[i].Id"))
    Debug.WriteLine("City: " & json.StringOf("QueryResponse.Customer[i].BillAddr.City"))
    Debug.WriteLine("----")
    i = i + 1
End While

Debug.WriteLine("Success.")

 

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