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VB.NET UWP/WinRT Web API Examples

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(VB.NET UWP/WinRT) Walmart - Update Inventory for an Item

Demonstrates how to update inventory for an item.

Note: This example requires Chilkat v9.5.0.67 or greater.

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.

' Sends the following PUT request:
' PUT https://marketplace.walmartapis.com/v2/inventory?sku={SKU}

Dim sbUrl As New Chilkat.StringBuilder
Dim success As Boolean = sbUrl.Append("https://marketplace.walmartapis.com/v2/inventory?sku={SKU}")
Dim numReplaced As Integer = sbUrl.Replace("{SKU}","HOPP~904~51041")

Dim requestMethod As String = "PUT"

' First we need to generate a signature for our request.
' The signature needs to be re-generated for each new Walmart HTTP request.
Dim authUtil As New Chilkat.AuthUtil

Dim wmConsumerId As String = "WALMART_CONSUMER_ID"
Dim wmPrivateKey As String = "WALMART_PRIVATE_KEY"
Dim jsonStr As String = authUtil.WalmartSignature(sbUrl.GetAsString(),wmConsumerId,wmPrivateKey,requestMethod)
If (authUtil.LastMethodSuccess <> True) Then
    Debug.WriteLine(authUtil.LastErrorText)
    Exit Sub
End If


' The JSON returned by WalmartSignature contains the values to be used in the following
' header fields: WM_SEC.AUTH_SIGNATURE, WM_SEC.TIMESTAMP, and WM_QOS.CORRELATION_ID
Dim json As New Chilkat.JsonObject
json.Load(jsonStr)

Dim http As New Chilkat.Http
http.SetRequestHeader("WM_SVC.NAME","Walmart Marketplace")
http.SetRequestHeader("WM_QOS.CORRELATION_ID",json.StringOf("correlation_id"))
http.SetRequestHeader("WM_SEC.TIMESTAMP",json.StringOf("timestamp"))
http.SetRequestHeader("WM_SEC.AUTH_SIGNATURE",json.StringOf("signature"))
http.SetRequestHeader("WM_CONSUMER.ID",wmConsumerId)
http.Accept = "application/xml"

' Note: Do not explicitly set the "Host" header.  Chilkat will set it automatically.

' The body of the PUT request will be XML that looks like this:

' 	<?xml version="1.0" encoding="utf-8" ?>
' 	<wm:inventory xmlns:wm="http://walmart.com/">
' 	    <wm:sku>HOPP~904~51041</wm:sku>
' 	    <wm:quantity>
' 	        <wm:unit>EACH</wm:unit>
' 	        <wm:amount>235</wm:amount>
' 	    </wm:quantity>
' 	    <wm:fulfillmentLagTime>5</wm:fulfillmentLagTime>
' 	</wm:inventory>

' Build the XML request body:
Dim originalAmount As Integer = 234

Dim xmlBody As New Chilkat.Xml
xmlBody.Tag = "wm:inventory"
xmlBody.AddAttribute("xmlns:wm","http://walmart.com/")
xmlBody.UpdateChildContent("wm:sku","HOPP~904~51041")
xmlBody.UpdateChildContent("wm:quantity|wm:unit","EACH")
xmlBody.UpdateChildContentInt("wm:quantity|wm:amount",originalAmount + 1)
xmlBody.UpdateChildContent("wm:fulfillmentLagTime","5")

Debug.WriteLine("PUT request body:")
Debug.WriteLine(xmlBody.GetXml())
Debug.WriteLine("--")

' This is a simple PUT that can be sent w/ the PutText method.
Dim xmlStr As String = Await http.PutTextAsync(sbUrl.GetAsString(),xmlBody.GetXml(),"utf-8","application/xml",False,False)
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim xml As New Chilkat.Xml
xml.LoadXml(xmlStr)

' A successful response should have a 200 response status
If (http.LastStatus <> 200) Then
    Debug.WriteLine(xml.GetXml())
    Debug.WriteLine("Response Status Code: " & http.LastStatus)
    Debug.WriteLine("Failed.")
    Exit Sub
End If



' A sample XML response is shown below..
Debug.WriteLine(xml.GetXml())
Debug.WriteLine("--")
Debug.WriteLine("Success!")

' ---------------------------------------
' Sample XML response
' ---------------------------------------

' <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
' <inventory xmlns="http://walmart.com/">
'     <sku>HOPP~904~51041</sku>
'     <quantity>
'         <unit>EACH</unit>
'         <amount>235</amount>
'     </quantity>
'     <fulfillmentLagTime>5</fulfillmentLagTime>
' </inventory>

 

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