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(C#) SendGrid -- Send Email with Attachment

See more SendGrid Examples

Sends an email with an attachment.

For more information, see https://sendgrid.com/docs/for-developers/sending-email/curl-examples/#sending-a-basic-email-with-attachment

Chilkat .NET Downloads

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Chilkat for Mono

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();
bool success;

// Implements the following CURL command:

// curl --request POST \
//   --url https://api.sendgrid.com/v3/mail/send \
//   --header 'authorization: Bearer YOUR_API_KEY' \
//   --header 'Content-Type: application/json' \
//   --data '{"personalizations": [{"to": [{"email": "recipient@example.com"}]}],"from": {"email": "sender@example.com"},"subject":"Hello, World!","content": [{"type": "text/html","value": "Hey,<br>Please find attachment."}], "attachments": [{"content": "BASE64_ENCODED_CONTENT", "type": "text/plain", "filename": "attachment.txt"}]}'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "personalizations": [
//     {
//       "to": [
//         {
//           "email": "recipient@example.com"
//         }
//       ]
//     }
//   ],
//   "from": {
//     "email": "sender@example.com"
//   },
//   "subject": "Hello, World!",
//   "content": [
//     {
//       "type": "text/html",
//       "value": "Hey,<br>Please find attachment."
//     }
//   ],
//   "attachments": [
//     {
//       "content": "BASE64_ENCODED_CONTENT",
//       "type": "text/plain",
//       "filename": "attachment.txt"
//     }
//   ]
// }

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("personalizations[0].to[0].email","recipient@example.com");
json.UpdateString("from.email","sender@example.com");
json.UpdateString("subject","Hello, World!");
json.UpdateString("content[0].type","text/html");
json.UpdateString("content[0].value","Hey,<br>Please find attachment.");

// Load a file to be attached.
Chilkat.BinData bd = new Chilkat.BinData();
success = bd.LoadFile("qa_data/pdf/hello.pdf");

json.UpdateString("attachments[0].content",bd.GetEncoded("base64"));
json.UpdateString("attachments[0].type","application/pdf");
json.UpdateString("attachments[0].filename","hello.pdf");

http.SetRequestHeader("Content-Type","application/json");
// Adds the "Authorization: Bearer YOUR_API_KEY" header.
http.AuthToken = "YOUR_API_KEY";

Chilkat.HttpResponse resp = http.PostJson3("https://api.sendgrid.com/v3/mail/send","application/json",json);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

int respStatusCode = resp.StatusCode;
Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
if (respStatusCode != 202) {
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(resp.Header);
    Debug.WriteLine("Response Body:");
    Debug.WriteLine(resp.BodyStr);
    Debug.WriteLine("Failed.");

    return;
}

Debug.WriteLine("Success.");

 

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