For your use we have also included a C# class for our API.

Download C# Class

For use of this class, please see some examples below.

            /*
             * Please Note: This example does not do
             * any error or exception checking
             *
             */

            PanaceaMobile.PanaceaApi sms = new PanaceaMobile.PanaceaApi("PUTYOURUSERNAMEHERE", "PUTYOURPASSWORDHERE");

            /// Messages & Status
            //  Please ensure you enter valid cellphone numbers for message_send() function
            // Start Example 1
            Hashtable   userBalanceResponse,
                        messageSendResponse,
                        messageStatusResponse;

            userBalanceResponse = (Hashtable)sms.user_get_balance();
            double balance = Convert.ToDouble(userBalanceResponse["details"]);
            System.Console.WriteLine("Balance: " + balance.ToString());

            messageSendResponse   = (Hashtable)sms.message_send("1234567890", "Messages test", "55555555555");
            messageStatusResponse = (Hashtable)sms.message_status((String)messageSendResponse["details"]);

            System.Console.WriteLine(Procurios.Public.JSON.JsonEncode(messageSendResponse));
            System.Console.WriteLine(Procurios.Public.JSON.JsonEncode(messageStatusResponse));
            // End Example 1 */

            /// GROUPS
            // Start Example 2
            Hashtable   groupAddResponseOne,
                        groupAddResponseTwo,
                        groupListResponse,
                        groupDeleteResponse;

            // Create 2 Groups
            groupAddResponseOne = (Hashtable)sms.address_book_group_add("My Test Group One");
            System.Console.WriteLine("The new group id: " + groupAddResponseOne["details"]);
            groupAddResponseTwo = (Hashtable)sms.address_book_group_add("My Test Group Two");
            System.Console.WriteLine("The new group id: " + groupAddResponseTwo["details"]);

            int groupOne = Convert.ToInt32(groupAddResponseOne["details"]);
            int groupTwo = Convert.ToInt32(groupAddResponseTwo["details"]);

            // List the groups
            groupListResponse = (Hashtable)sms.address_book_groups_get_list();
            foreach (Hashtable listItem in (ArrayList)groupListResponse["details"])
            {
                System.Console.WriteLine("ID: " + listItem["id"] + " - Name: " + listItem["name"]);
            }

            // Delete the first of the two groups
            groupDeleteResponse = (Hashtable)sms.address_book_group_delete(groupOne);
            System.Console.WriteLine("Delete group: " + groupOne.ToString() + ", Status: " + groupDeleteResponse["status"] + ", Message: " + groupDeleteResponse["message"]);

            /// CONTACTS
            Hashtable   contactAddResponseOne,
                        contactAddResponseTwo,
                        contactListResponse,
                        contactUpdateResponse,
                        contactDeleteResponse;

            // Add two contacts to GROUP TWO
            contactAddResponseOne = (Hashtable)sms.address_book_contact_add(groupTwo, "1234567890", "Graeme", "Smith");
            System.Console.WriteLine("Added new contact. ID: " + contactAddResponseOne["details"]);
            contactAddResponseTwo = (Hashtable)sms.address_book_contact_add(groupTwo, "0987654321", "Mark", "Boucher");
            System.Console.WriteLine("Added new contact. ID: " + contactAddResponseTwo["details"]);

            int contactOne = Convert.ToInt32(contactAddResponseOne["details"]);
            int contactTwo = Convert.ToInt32(contactAddResponseTwo["details"]);

            // List the contacts from GROUP TWO
            contactListResponse = (Hashtable)sms.address_book_contacts_get_list(groupTwo);
            foreach (Hashtable listItem in (ArrayList)contactListResponse["details"])
            {
                IDictionaryEnumerator de = listItem.GetEnumerator();
                while (de.MoveNext())
                {
                    System.Console.WriteLine(de.Key.ToString() + " - " + de.Value.ToString());
                }
                //System.Console.WriteLine("ID: " + listItem["id"] + " - Phone Number: " + listItem["phone_number"] + " - First Name: " + listItem["first_name"] + " - Last Name: " + listItem["last_name"]);
            }
            contactUpdateResponse  = (Hashtable)sms.address_book_contact_update(contactOne, "1234567890", "Biff", "Smith");

            // Delete the two contacts
            contactDeleteResponse = (Hashtable)sms.address_book_contact_delete(contactOne);
            System.Console.WriteLine("Delete contact: " + contactOne.ToString() + ", Status: " + contactDeleteResponse["status"] + ", Message: " + contactDeleteResponse["message"]);
            contactDeleteResponse = (Hashtable)sms.address_book_contact_delete(contactTwo);
            System.Console.WriteLine("Delete contact: " + contactTwo.ToString() + ", Status: " + contactDeleteResponse["status"] + ", Message: " + contactDeleteResponse["message"]);

            // Delete the second group
            groupDeleteResponse = (Hashtable)sms.address_book_group_delete(groupTwo);
            System.Console.WriteLine("Delete group: " + groupTwo.ToString() + "Status: " + groupDeleteResponse["status"] + ", Message: " + groupDeleteResponse["message"]);
            End Example 2 */          

            /// QUEUED ACTIONS
            //  Please ensure you enter valid cellphone numbers for message_send() function
            // Start Example 3
            Hashtable queueResponses;
            sms.setPerformActionsImmediately(false);
            sms.message_send("1234567890", "Queued 1", "5555555555");
            sms.message_send("09876543221", "Queued 2", "5555555555");
            queueResponses = sms.execute_multiple();
            sms.setPerformActionsImmediately(true);
            System.Console.WriteLine(Procurios.Public.JSON.JsonEncode(queueResponses));
            // End Example 3 */

            /// Batches
            //  Please ensure you enter valid cellphone numbers for in the csv data
            // Start Example 4
            Hashtable   batchCreateResponse,
                        batchStartResponse,
                        batchCheckResponse;

            // Build CSV file our input via some other method
            StringBuilder csv = new StringBuilder();
            csv.AppendLine("to,from,message");
            csv.AppendLine("1234567890,5555555555,\"send this message\"");
            csv.AppendLine("0987654321,5555555555,\"send this different batch message\");
            String data = csv.ToString().Trim();

            batchCreateResponse = (Hashtable)sms.batch_create(data, "Batch One Test");
            System.Console.WriteLine(Procurios.Public.JSON.JsonEncode(batchCreateResponse));

            int batch_id = Convert.ToInt32(batchCreateResponse["details"]);
            batchStartResponse = (Hashtable)sms.batch_start(batch_id);
            System.Console.WriteLine(Procurios.Public.JSON.JsonEncode(batchStartResponse));

            batchCheckResponse = (Hashtable)sms.batch_check_status(batch_id);
            System.Console.WriteLine(Procurios.Public.JSON.JsonEncode(batchCheckResponse));
            // End Example 4 */

This class is based on the HTTP API.

See HTTP API Documentation