(.NET Core C#) SMSAPI - Send SMS with Multiple Lines of Text

See more SMSAPI Examples

Send an SMS message containing multiple lines of text.

For more information, see https://www.smsapi.com/docs/#2-single-sms

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// 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 -H "Authorization: Bearer token_api_oauth" \
// "https://api.smsapi.com/sms.do?from=sender_name&to=44123456789&message=message_content&format=json"

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

// Adds the "Authorization: Bearer token_api_oauth" header.
http.AuthToken = "token_api_oauth";

string messageContent = "Hello\r\nThis is a test\r\nwith multiple lines of text.";

// Given that our message contentn has newlines, we obviously cannot put newlines in a URL without them being URL encoded..
// Therefore.. URL encode..
Chilkat.StringBuilder sbMessage = new Chilkat.StringBuilder();
sbMessage.Append(messageContent);
sbMessage.Encode("url","utf-8");

http.SetUrlVar("msgContent",sbMessage.GetAsString());

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = http.QuickGetSb("https://api.smsapi.com/sms.do?from=sender_name&to=44123456789&message={$msgContent}&format=json",sbResponseBody);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine("Response body:");
Debug.WriteLine(sbResponseBody.GetAsString());