C#

PayPal Send Invoice

See more PayPal Examples

Sends a PayPal invoice to a customer.

See also Send Invoice

C#

bool success = false;

//  Note: Requires Chilkat v9.5.0.64 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 a path using a draft invoice ID.
Chilkat.StringBuilder sbPath = new Chilkat.StringBuilder();
sbPath.Append("/v1/invoicing/invoices/invoice_id/send");
int numReplacements = sbPath.Replace("invoice_id","INV2-QCHR-QHSD-M2VU-AVXC");

rest.AddHeader("Authorization",sbAuth.GetAsString());
rest.AddQueryParam("notify_merchant","true");

string responseBody = rest.FullRequestFormUrlEncoded("POST",sbPath.GetAsString());
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

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

//  Did we get a 202 accepted response?
if (rest.ResponseStatusCode != 202) {
    Debug.WriteLine(responseBody);
    Debug.WriteLine("Failed.");
    return;
}

//  If the 202 response is received, the response body would be empty...
Debug.WriteLine("Success.");