How to make a basic XML API Request using C#

[Troy_Mitchell]

Hello, 

I'm trying to learn how to use the API with a C# Client.

I'm able to make a API request, using a web browser, but can someone, give me an example in C#.

So if I wanted to use this example:

Make a call to get system information, which returns the IP address, hostname, and model of your firewall.

'https://firewall//api/?type=op&cmd=<show><system><info></info></system></show>&key=apikey

response status="success">

<result>

<system>

<hostname>firewall</hostname>

<ip-address>10.27.0.8</ip-address>

I'd like to get this back into a form textbox, or a label.

This will help me to learn how to use this API and Web Requests.

Thanks,

-Troy

[Sjoerd]

This should get you started.

It's a console application that retrieve's the firewalls HostName, IP adress and model.

using System;
using System.IO;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Xml;

namespace PAN_API
{
    class Program
    {
        static string FirewallIP = "******";
        static string FirewallAPI = "******"; 
        static void Main(string[] args)
        {
            try
            {
                string requestURL = "https://" + FirewallIP + "/api/?type=op&cmd=<show><system><info></info></system></show>&key=" + FirewallAPI;
                WebRequest request = WebRequest.Create(requestURL);
                request.Proxy = null;
                request.Credentials = CredentialCache.DefaultCredentials;
                ServicePointManager.ServerCertificateValidationCallback += new System.Net.Security.RemoteCertificateValidationCallback(ValidateServerCertificate);
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream dataStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(dataStream);
                string responseFromServer = reader.ReadToEnd();
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.LoadXml(responseFromServer);
                Console.WriteLine("hostname: " + xmlDoc.GetElementsByTagName("hostname")[0].InnerText);
                Console.WriteLine("ip: " + xmlDoc.GetElementsByTagName("ip-address")[0].InnerText);
                Console.WriteLine("model: " + xmlDoc.GetElementsByTagName("model")[0].InnerText);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                Console.Read();
            }
        }
        public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        {
            return true;
        }
    }
}