配置短信API

Question

Please all I've got this API from an SMS reseller here in Nigeria. I want to know how to insert my textbox values corectly API: http://smsmobile24.com/components/com_spc/smsapi.php?username=xxx&password=yyy&sender=@@sender@@&recipient=@@recipient@@&message=@@message@@

I need to insert password, username and of course sender and recipients.

I have tried doing this:

string to, msg;
to = smsRecipientBox.Text;
msg = smsMsgBox.Text;

http://smsmobile24.com/components/com_spc/smsapi.php?username=C***er&password=fath****am&sender=Cmanager&recipient = '"+to+"'&message='"+msg+"';

But I get that red line telling me there is an error.

Answer 1

You can't modify a constant value (variable that is marked with const modifier).

You have two options here:

1) you remove the const from the field

2) use formatting to insert values in placeholders in the constant string:

const string url = "http://smsmobile24.com/components/com_spc/smsapi.php?username=C***er&password=fath****am&sender=Cmanager&recipient={0}&message={1}";

var to = smsRecipientBox.Text;
var msg = smsMsgBox.Text;

string result = string.Format(url, to, msg);