(VB.NET UWP/WinRT) PayPal - Execute Approved PayPal Payment

Executes an approved PayPal payment. (This is for executing an approved PayPal payment, not a credit card payment.)

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

' Note: Requires Chilkat v9.5.0.65 or greater..

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

' Load our previously obtained access token. (see PayPal OAuth2 Access Token)
Dim jsonToken As New Chilkat.JsonObject
jsonToken.LoadFile("qa_data/tokens/paypal.json")

' Build the Authorization request header field value.
Dim sbAuth As New Chilkat.StringBuilder
' token_type should be "Bearer"
sbAuth.Append(jsonToken.StringOf("token_type"))
sbAuth.Append(" ")
sbAuth.Append(jsonToken.StringOf("access_token"))

' Make the initial connection.
' A single REST object, once connected, can be used for many PayPal 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 rest As New Chilkat.Rest
Dim bAutoReconnect As Boolean = True
Dim success As Boolean = Await rest.ConnectAsync("api.sandbox.paypal.com",443,True,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' ----------------------------------------------------------------------------------------------
' The code above this comment could be placed inside a function/subroutine within the application
' because the connection does not need to be made for every request.  Once the connection is made
' the app may send many requests..
' ----------------------------------------------------------------------------------------------

' Build the JSON containing the payer_id
Dim json As New Chilkat.JsonObject
json.EmitCompact = False
json.AppendString("payer_id","RRCYJUTFJGZTA")
Debug.WriteLine(json.Emit())

' The JSON created by the above code:

' 	{ 
' 	  "payer_id": "RRCYJUTFJGZTA"
' 	}

rest.AddHeader("Authorization",sbAuth.GetAsString())
rest.AddHeader("Content-Type","application/json")

' The payment ID is passed in the path.
Dim sbPath As New Chilkat.StringBuilder
sbPath.Append("/v1/payments/payment/payment_id/execute")
Dim numReplaced As Integer = sbPath.Replace("payment_id","PAY-4N746561P0587231SKQQK6MY")

' Send the POST request containign the JSON in the request body, and get the JSON response.
Dim sbJsonRequest As New Chilkat.StringBuilder
json.EmitCompact = True
json.EmitSb(sbJsonRequest)
Dim sbJsonResponse As New Chilkat.StringBuilder
success = Await rest.FullRequestSbAsync("POST",sbPath.GetAsString(),sbJsonRequest,sbJsonResponse)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


json.EmitCompact = False
json.LoadSb(sbJsonResponse)

Debug.WriteLine("Response Status Code = " & rest.ResponseStatusCode)

' Did we get a 200 success response?
If (rest.ResponseStatusCode <> 200) Then
    Debug.WriteLine(json.Emit())
    Debug.WriteLine("Failed.")
    Exit Sub
End If


' Sample JSON response is shown below.
Debug.WriteLine(json.Emit())

Debug.WriteLine("success")

' ------------------------------------------------
' A sample JSON response:


' 	{ 
' 	  "id": "PAY-4N746561P0587231SKQQK6MY",
' 	  "create_time": "2014-09-22T23:22:27Z",
' 	  "update_time": "2014-09-22T23:31:13Z",
' 	  "state": "approved",
' 	  "intent": "sale",
' 	  "payer": { 
' 	    "payment_method": "paypal",
' 	    "payer_info": { 
' 	      "email": "npurayil-uspr-60@paypal.com",
' 	      "first_name": "Brian",
' 	      "last_name": "Robinson",
' 	      "payer_id": "JMKDKJ4D7DG7G",
' 	      "shipping_address": { 
' 	        "line1": "4thFloor",
' 	        "line2": "unit#34",
' 	        "city": "SAn Jose",
' 	        "state": "CA",
' 	        "postal_code": "95131",
' 	        "country_code": "US",
' 	        "phone": "011862212345678",
' 	        "recipient_name": "HelloWorld"
' 	      }
' 	    }
' 	  },
' 	  "transactions": [
' 	    { 
' 	      "amount": { 
' 	        "total": "30.11",
' 	        "currency": "USD",
' 	        "details": { 
' 	          "subtotal": "30.00",
' 	          "tax": "0.07",
' 	          "shipping": "0.03",
' 	          "handling_fee": "1.00",
' 	          "insurance": "0.01",
' 	          "shipping_discount": "-1.00"
' 	        }
' 	      },
' 	      "description": "This is the payment transaction description.",
' 	      "item_list": { 
' 	        "items": [
' 	          { 
' 	            "name": "hat",
' 	            "sku": "1",
' 	            "price": "3.00",
' 	            "currency": "USD",
' 	            "quantity": "5",
' 	            "description": "Brown color hat",
' 	            "tax": "0.01"
' 	          },
' 	          { 
' 	            "name": "handbag",
' 	            "sku": "product34",
' 	            "price": "15.00",
' 	            "currency": "USD",
' 	            "quantity": "1",
' 	            "description": "Black color handbag",
' 	            "tax": "0.02"
' 	          }
' 	        ],
' 	        "shipping_address": { 
' 	          "recipient_name": "HelloWorld",
' 	          "line1": "4thFloor",
' 	          "line2": "unit#34",
' 	          "city": "SAn Jose",
' 	          "state": "CA",
' 	          "phone": "011862212345678",
' 	          "postal_code": "95131",
' 	          "country_code": "US"
' 	        }
' 	      },
' 	      "related_resources": [
' 	        { 
' 	          "sale": { 
' 	            "id": "4XP56210M0797192Y",
' 	            "create_time": "2014-09-22T23:22:27Z",
' 	            "update_time": "2014-09-22T23:31:13Z",
' 	            "amount": { 
' 	              "total": "30.11",
' 	              "currency": "USD"
' 	            },
' 	            "payment_mode": "INSTANT_TRANSFER",
' 	            "state": "completed",
' 	            "protection_eligibility": "ELIGIBLE",
' 	            "protection_eligibility_type": "ITEM_NOT_RECEIVED_ELIGIBLE",
' 	            "transaction_fee": { 
' 	              "value": "1.75",
' 	              "currency": "USD"
' 	            },
' 	            "parent_payment": "PAY-4N746561P0587231SKQQK6MY",
' 	            "links": [
' 	              { 
' 	                "href": "https://api.paypal.com/v1/payments/sale/4XP56210M0797192Y",
' 	                "rel": "self",
' 	                "method": "GET"
' 	              },
' 	              { 
' 	                "href": "https://api.paypal.com/v1/payments/sale/4XP56210M0797192Y/refund",
' 	                "rel": "refund",
' 	                "method": "POST"
' 	              },
' 	              { 
' 	                "href": "https://api.paypal.com/v1/payments/payment/PAY-4N746561P0587231SKQQK6MY",
' 	                "rel": "parent_payment",
' 	                "method": "GET"
' 	              }
' 	            ]
' 	          }
' 	        }
' 	      ]
' 	    }
' 	  ],
' 	  "links": [
' 	    { 
' 	      "href": "https://api.paypal.com/v1/payments/payment/PAY-4N746561P0587231SKQQK6MY",
' 	      "rel": "self",
' 	      "method": "GET"
' 	    }
' 	  ]
' 	}