C#

PayPal - Capture a Previously Authorized Payment

See more PayPal Examples

Captures a previously authorized payment.

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

C#

bool success = false;

//  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;
success = rest.Connect("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..
//  ----------------------------------------------------------------------------------------------

//  Build the JSON containing the transaction information.
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;
json.UpdateString("amount.currency","USD");
json.UpdateString("amount.total","4.54");
json.UpdateBool("is_final_capture",true);
Debug.WriteLine(json.Emit());

//  The JSON created by the above code:

//  	{ 
//  	  "amount": { 
//  	    "currency": "USD",
//  	    "total": "4.54"
//  	  },
//  	  "is_final_capture": true
//  	}

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

//  To capture payment, make a call to /v1/payments/authorization/[authorization_id]/capture with the authorization ID in the URI.
//  See PayPal Authorize Payment for sample code to create the authorization.
//  The "7X8332687A4929542" comes from the "transactions[0].related_resources[0].authorization.id" part of the authorization response.

Chilkat.StringBuilder sbPath = new Chilkat.StringBuilder();
sbPath.Append("/v1/payments/authorization/[authorization_id]/capture");
int numReplacements = sbPath.Replace("[authorization_id]","7X8332687A4929542");

//  Send the POST request containign the JSON in the request body, and get the JSON response.
Chilkat.StringBuilder sbJsonRequest = new Chilkat.StringBuilder();
json.EmitCompact = true;
json.EmitSb(sbJsonRequest);
Chilkat.StringBuilder sbJsonResponse = new Chilkat.StringBuilder();
success = rest.FullRequestSb("POST",sbPath.GetAsString(),sbJsonRequest,sbJsonResponse);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

json.EmitCompact = false;
json.LoadSb(sbJsonResponse);

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

//  IMPORTANT: In most PayPal examples, the return status code is 201.
//  For this particular call, PayPal returns status code 200.

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

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

Debug.WriteLine("success");

//  ------------------------------------------------
//  A sample JSON response:

//  	{ 
//  	  "id": "1LY5310469661362J",
//  	  "create_time": "2016-11-24T00:40:50Z",
//  	  "update_time": "2016-11-24T00:40:54Z",
//  	  "amount": { 
//  	    "total": "4.54",
//  	    "currency": "USD"
//  	  },
//  	  "is_final_capture": true,
//  	  "state": "completed",
//  	  "reasonCode": "None",
//  	  "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
//  	  "transaction_fee": { 
//  	    "value": "0.43",
//  	    "currency": "USD"
//  	  },
//  	  "links": [
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J",
//  	      "rel": "self",
//  	      "method": "GET"
//  	    },
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J/refund",
//  	      "rel": "refund",
//  	      "method": "POST"
//  	    },
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542",
//  	      "rel": "authorization",
//  	      "method": "GET"
//  	    },
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
//  	      "rel": "parent_payment",
//  	      "method": "GET"
//  	    }
//  	  ]
//  	}