Authorize.Net Credit card processing Integration Sample code

You can create test account by clicking the below link
https://developer.authorize.net/sandbox/

You will get login information to the registered account.

For test account Login URL click the below link
https://test.authorize.net/

Place the code in the submit button click and also you can pass the data from the textbox entered details


// By default, this sample code is designed to post to our test server for

            // developer accounts: https://test.authorize.net/gateway/transact.dll

            // for real accounts (even in test mode), please make sure that you are

            // posting to: https://secure.authorize.net/gateway/transact.dll

            String post_url = "https://test.authorize.net/gateway/transact.dll";

            Dictionary<string, string> post_values = new Dictionary<string, string>();

            //the API Login ID and Transaction Key must be replaced with valid values

            post_values.Add("x_login", "Your login info");

            post_values.Add("x_tran_key", " Your login key");

            post_values.Add("x_delim_data", "TRUE");

            post_values.Add("x_delim_char", "|");

            post_values.Add("x_relay_response", "FALSE");

            post_values.Add("x_type", "AUTH_CAPTURE");

            post_values.Add("x_method", "ECHECK");

            post_values.Add("x_card_num", "4111111111111111");

            post_values.Add("x_exp_date", "0115");

            post_values.Add("x_amount", "19.99");

            post_values.Add("x_description", "Sample Transaction");

            post_values.Add("x_first_name", "John");

            post_values.Add("x_last_name", "Doe");

            post_values.Add("x_address", "1234 Street");

            post_values.Add("x_state", "WA");

            post_values.Add("x_zip", "98004");

            // Additional fields can be added here as outlined in the AIM integration

            // guide at: http://developer.authorize.net

            // This section takes the input fields and converts them to the proper format

            // for an http post.  For example: "x_login=username&x_tran_key=a1B2c3D4"

            String post_string = "";

            foreach (KeyValuePair<string, string> post_value in post_values)

            {

                post_string += post_value.Key + "=" + HttpUtility.UrlEncode(post_value.Value) + "&";

            }

            post_string = post_string.TrimEnd('&');

            // The following section provides an example of how to add line item details to

            // the post string.  Because line items may consist of multiple values with the

            // same key/name, they cannot be simply added into the above array.

            //

            // This section is commented out by default.

            /*

            string[] line_items = {

                "item1<|>golf balls<|><|>2<|>18.95<|>Y",

                "item2<|>golf bag<|>Wilson golf carry bag, red<|>1<|>39.99<|>Y",

                "item3<|>book<|>Golf for Dummies<|>1<|>21.99<|>Y"};

      

            foreach( string value in line_items )

            {

                post_string += "&x_line_item=" + HttpUtility.UrlEncode(value);

            }

            */

            // create an HttpWebRequest object to communicate with Authorize.net

            HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(post_url);

            objRequest.Method = "POST";

            objRequest.ContentLength = post_string.Length;

            objRequest.ContentType = "application/x-www-form-urlencoded";

            // post data is sent as a stream

            StreamWriter myWriter  = null;

            myWriter = new StreamWriter(objRequest.GetRequestStream());

            myWriter.Write(post_string);

            myWriter.Close();

            // returned values are returned as a stream, then read into a string

            String post_response;

            HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();

            using (StreamReader responseStream = new StreamReader(objResponse.GetResponseStream()) )

            {

                post_response = responseStream.ReadToEnd();

                responseStream.Close();

            }

            // the response string is broken into an array

            // The split character specified here must match the delimiting character specified above

            Array response_array = post_response.Split('|');

            // the results are output to the screen in the form of an html numbered list.

            resultSpan.InnerHtml += "<OL> \n";

            foreach (string value in response_array)

            {

                resultSpan.InnerHtml += "<LI>" + value + "&nbsp;</LI> \n";

            }

            resultSpan.InnerHtml += "</OL> \n";

            // individual elements of the array could be accessed to read certain response

            // fields.  For example, response_array[0] would return the Response Code,

            // response_array[2] would return the Response Reason Code.

            // for a list of response fields, please review the AIM Implementation Guide