(C# UWP/WinRT) PayPal - Find Completed Sales

List payments and find completed payments (sales transactions). Get the sales id, state, and total amount for each.

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)
Chilkat.JsonObject jsonToken = new Chilkat.JsonObject();
jsonToken.LoadFile("qa_data/tokens/paypal.json");

// Build the Authorization request header field value.
Chilkat.StringBuilder sbAuth = 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.
Chilkat.Rest rest = new Chilkat.Rest();
bool bAutoReconnect = true;
bool success = await rest.ConnectAsync("api.sandbox.paypal.com",443,true,bAutoReconnect);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// ----------------------------------------------------------------------------------------------
// 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..
// ----------------------------------------------------------------------------------------------

// Clear the REST object of any headers or query params from previous requests.
rest.ClearAllHeaders();
rest.ClearAllQueryParams();

rest.AddHeader("Authorization",sbAuth.GetAsString());

// To find sales transactions, we list payments and look for those
// containing "sale" transactions
rest.AddQueryParam("count","100");
rest.AddQueryParam("start_index","0");
rest.AddQueryParam("sort_by","update_time");
rest.AddQueryParam("sort_order","asc");

// Send the GET request and get the JSON response.
Chilkat.StringBuilder sbJsonResponse = new Chilkat.StringBuilder();
success = await rest.FullRequestNoBodySbAsync("GET","/v1/payments/payment",sbJsonResponse);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;
json.LoadSb(sbJsonResponse);

// (optional) Save the entire JSON response to a file to examine if desired..
Chilkat.StringBuilder sbTemp = new Chilkat.StringBuilder();
json.EmitSb(sbTemp);
sbTemp.WriteFile("qa_output/paypal_payments.json","utf-8",false);

Debug.WriteLine("Response Status Code = " + Convert.ToString(rest.ResponseStatusCode));

// Did we get a 200 success response?
if (rest.ResponseStatusCode != 200) {
    Debug.WriteLine(json.Emit());
    Debug.WriteLine("Failed.");
    return;
}

// We are looking for sales transactions .
// As shown below, we are looking in the "transactions" for "related_resources"
// containing "sale" JSON objects. 

// 	{ 
// 	  "payments": [
// 	    { 
// 	      "id": "PAY-66A12106PU3254228LA3BYKI",
// 	      "create_time": "2016-11-23T22:46:01Z",
// 	      "update_time": "2016-11-23T22:46:07Z",
// 	      "state": "approved",
// 	      "intent": "sale",
// 	      "payer": { 
// 	          ...
// 	          }
// 	        ]
// 	      },
// 	      "transactions": [
// 	        { 
// 	          ...
// 	          "related_resources": [
// 	            { 
// 	              "sale": { 
// 	                "id": "70L88278E6781074B",
// 	                "create_time": "2016-11-23T22:46:01Z",
// 	                "update_time": "2016-11-23T22:46:07Z",
// 	                "amount": { 
// 	                  "total": "7.47",
// 	                  "currency": "USD"
// 	                },
// 	                "state": "completed",
// 	                "parent_payment": "PAY-66A12106PU3254228LA3BYKI",

// Iterate over the payments and show each sale transaction.
int numPayments = json.SizeOfArray("payments");
int i = 0;
while (i < numPayments) {

    json.I = i;
    int j = 0;
    int numTransactions = json.SizeOfArray("payments[i].transactions");
    while (j < numTransactions) {
        json.J = j;
        int numRelatedResources = json.SizeOfArray("payments[i].transactions[j].related_resources");
        int k = 0;
        while (k < numRelatedResources) {
            json.K = k;
            if (json.HasMember("payments[i].transactions[j].related_resources[k].sale") == true) {
                Chilkat.JsonObject jsonSale = json.ObjectOf("payments[i].transactions[j].related_resources[k].sale");
                Debug.WriteLine("sale id: " + jsonSale.StringOf("id"));
                Debug.WriteLine("state: " + jsonSale.StringOf("state"));
                Debug.WriteLine("total: " + jsonSale.StringOf("amount.total"));
                Debug.WriteLine("----");

            }

            k = k + 1;
        }

        j = j + 1;
    }

    i = i + 1;
}

Debug.WriteLine("success");