C# Requires Chilkat v11.0.0+

PayPal: Send a draft invoice

See more PayPal Examples

Send a draft to its sandbox recipient. PayPal can accept delivery for later when the issue date is in the future. After an uncertain response, look up the invoice before trying again.

PayPal documentation

C#

bool success = false;

//  See Unlock Chilkat before making requests.
//  For the merchant's internal backoffice application. Load the sandbox token
//  from the merchant's credential store. Keep it out of publicly distributed apps.
//  See Get a PayPal access token.
Chilkat.Http http = new Chilkat.Http();
http.AuthToken = "SANDBOX_ACCESS_TOKEN";
Chilkat.HttpResponse resp = new Chilkat.HttpResponse();

//  The invoice already exists as a draft. Sending is the separate step that notifies
//  the recipient.

http.SetUrlVar("id","INVOICE_ID");
Chilkat.JsonObject body = new Chilkat.JsonObject();
body.UpdateBool("send_to_recipient",true);
body.UpdateBool("send_to_invoicer",false);

success = http.HttpJson("POST","https://api-m.sandbox.paypal.com/v2/invoicing/invoices/{$id}/send",body,"application/json",resp);
if (success != true) {
    Debug.WriteLine("No HTTP response: " + http.LastErrorText);
    return;
}

if ((resp.StatusCode < 200) || (resp.StatusCode >= 300)) {
    Chilkat.JsonObject errorInfo = new Chilkat.JsonObject();
    errorInfo.Load(resp.BodyStr);
    Debug.WriteLine("HTTP " + Convert.ToString(resp.StatusCode) + " " + errorInfo.StringOf("name") + " " + errorInfo.StringOf("details[0].issue"));
    Debug.WriteLine("PayPal debug ID: " + errorInfo.StringOf("debug_id"));
    return;
}

Debug.WriteLine("Send request accepted; HTTP " + Convert.ToString(resp.StatusCode));