HTTP API Examples

<script runat="server" language="C#"> 
void Subscribe() 
{ 
string retCode = "1"; // if retCode = 1 returned value is an error code, if retCode = 0 returned value is the error text 

string ret_val = SubscribeUser(retCode); 

// Once the value has been returned it is possible to decide what to do/view

// ******************************************************** 
// If retCode = 1 returned values are the following: 
// 0 : Operation completed 
// 1 : Generic error
// 2 : Invalid email address
// 3 : User already subscribed
// ******************************************************** 

switch(ret_val) 
{ 
case "0": 
// Display a message saying the user was subscribed successfully 
break; 
case "1": 
// Display a message saying the service is not accessible at the moment
break; 
case "2": 
// Display a message saying the email address in an invalid address
break; 
case "3": 
// Display a message saying that the user is already subscribed 
break; 
default: 
// Display a message saying the service is temporarily unavailable
break; 
} 


//************************************************************************** 
// If retCode = 0 error text is returned
//************************************************************************** 
// For example, the value ret_val can be associated to a Label object
} 

// This function calls the user's registration page and returns an output value 
string SubscribeUser(string retCode) 
{ 
string strEmail = Request.Params["email"]; // user's email address
string intList = Request.Params["list"]; // list ID 
string intGroup = Request.Params["group"]; // group to which to subscribe the user (optional) 
string blnConfirm = "1"; //Confirmation request
string csvFldNames = "Field1;Field2;Field3;Field4"; //Field names are taken from the Codes Table
string csvFldValues = "Name;Surname;Company;M"; //Values are assigned to the corresponding fields in the same order as csvFldNames 
string result = ""; // returned value

string url = "http://newsletter.nomedominio.tld/frontend/xmlSubscribe.aspx"; 
url += "?list=" + intList + "&group=" + intGroup + "&email=" + strEmail + "&confirm=" + blnConfirm.ToString() + "&csvFldNames=" + csvFldNames + "&csvFldValues=" + csvFldValues + "&retCode=" + retCode; 

System.Net.HttpWebRequest wreq = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url); 
wreq.Method = "GET"; 
wreq.Timeout = 10000; 

System.Net.HttpWebResponse wr = (System.Net.HttpWebResponse)wreq.GetResponse(); 

// If the page answers correctly the return value is obtained 
if (wr.StatusCode == System.Net.HttpStatusCode.OK) 
{ 
System.IO.Stream s = wr.GetResponseStream(); 
System.Text.Encoding enc = System.Text.Encoding.GetEncoding("utf-8"); 
System.IO.StreamReader readStream = new System.IO.StreamReader( s, enc ); 

// vreturn value
result = readStream.ReadToEnd(); 
} 

return result; 
} 
</script>