.NET

The samples below are written in C#, targets .NET Framework v4.0 and uses the additional libraries Newtonsoft.Json and System.Net.Http. Both of these libraries are included in the sample project that are available for download below.

Sample 1: Get Articles

Fetches a list of articles. No authentication is needed.

        
        using System.Net.Http;
        using System.Net.Http.Headers;

        using Newtonsoft.Json.Linq;

        public class Program
        {
            public static void Main(string[] args)
            {
                try
                {
                    HttpClient client = new HttpClient();
                    client.BaseAddress = new Uri("https://qrapi-se.gcelsa.com/");

                    // Add an Accept header for JSON format.
                    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

                    HttpResponseMessage response = client.GetAsync("api/Article/GetArticles").Result;

                    response.EnsureSuccessStatusCode();

                    // Fetch the results from the request as a json string.
                    var json = response.Content.ReadAsStringAsync().Result;

                    // Convert the json string to a dynamic object so we easily can access its properties.
                    dynamic apiResponse = JObject.Parse(json);

                    // Response code 0 indicates success. See API documentation for a description of the error codes.
                    if ((int)apiResponse.ResponseCode != 0)
                    {
                        throw new ApplicationException((string)apiResponse.ResponseDescription);
                    }

                    foreach (var article in apiResponse.ResponseObject)
                    {
                        Console.WriteLine("Id: {0}\nArticleName: {1};\nDescription: {2}\n\n", article.Id, article.ArticleName, article.Description);
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine("\nAn error occurred!");
                    Console.WriteLine("Message :{0} ", ex.Message);
                }
            
                Console.ReadLine();
            }
        }
        

        

Sample 2: Get Projects

Fetches a list of projects. Basic authentication is used.

        
        using System.Net.Http;
        using System.Net.Http.Headers;

        using Newtonsoft.Json.Linq;

        public class Program
        {
            public static void Main(string[] args)
            {
                try
                {
                    HttpClient client = new HttpClient();
                    client.BaseAddress = new Uri("https://qrapi-se.gcelsa.com/");

                    // Add an Accept header for JSON format.
                    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

                    string apiUser = "[ENTER YOUR API USER HERE]";
                    string apiPass = "[ENTER YOUR API PASS HERE]";
                    string user = "[ENTER YOUR SYSTEM USER HERE]";
                    string pass = "[ENTER YOUR SYSTEM PASS HERE]";

                    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.UTF8.GetBytes(string.Format("{0}:{1}", apiUser, apiPass))));
                    client.DefaultRequestHeaders.Add("UserName", user);
                    client.DefaultRequestHeaders.Add("UserPassword", pass);

                    HttpResponseMessage response = client.GetAsync("api/Project/GetProjects").Result;

                    response.EnsureSuccessStatusCode();

                    // Fetch the results from the request as a json string.
                    var json = response.Content.ReadAsStringAsync().Result;

                    // Convert the json string to a dynamic object so we easily can access its properties.
                    dynamic apiResponse = JObject.Parse(json);

                    // Response code 0 indicates success. See API documentation for a description of the error codes.
                    if ((int)apiResponse.ResponseCode != 0)
                    {
                        throw new ApplicationException((string)apiResponse.ResponseDescription);
                    }

                    foreach (var project in apiResponse.ResponseObject)
                    {
                        Console.WriteLine("Id: {0}\nProjectName: {1}:\nExternalCode: {2}\n\n", project.Id, project.ProjectName, project.ExternalCode);
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine("\nAn error occurred!");
                    Console.WriteLine("Message :{0} ", ex.Message);
                }

                Console.ReadLine();
            }
        }

        

Sample 3: Update Project

Updates a specific project. Basic authentication is used.

        
        using System.Net.Http;
        using System.Net.Http.Headers;

        using Newtonsoft.Json.Linq;

        public class Program
        {
            public static void Main(string[] args)
            {
                try
                {
                    HttpClient client = new HttpClient();
                    client.BaseAddress = new Uri("https://qrapi-se.gcelsa.com/");

                    // Add an Accept header for JSON format.
                    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                
                    string apiUser = "[ENTER YOUR API USER HERE]";
                    string apiPass = "[ENTER YOUR API PASS HERE]";
                    string user = "[ENTER YOUR SYSTEM USER HERE]";
                    string pass = "[ENTER YOUR SYSTEM PASS HERE]";

                    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.UTF8.GetBytes(string.Format("{0}:{1}", apiUser, apiPass))));
                    client.DefaultRequestHeaders.Add("UserName", user);
                    client.DefaultRequestHeaders.Add("UserPassword", pass);

                    var requestJson = @"{
                      ""ProjectName"": ""sample string 1"",
                      ""ExternalCode"": ""sample string 2"",
                      ""Id"": 220,
                      ""ProjectTypeId"": 3
                    }";

                    HttpResponseMessage response = client.PostAsync("api/Project/UpdateProject", new StringContent(requestJson, Encoding.UTF8, "application/json")).Result;

                    response.EnsureSuccessStatusCode();

                    var responseJson = response.Content.ReadAsStringAsync().Result;

                    // Convert the json string to a dynamic object so we easily can access its properties.
                    dynamic apiResponse = JObject.Parse(responseJson);

                    // Response code 0 indicates success. See API documentation for a description of the error codes.
                    if ((int)apiResponse.ResponseCode != 0)
                    {
                        throw new ApplicationException((string)apiResponse.ResponseDescription);
                    }

                    Console.WriteLine("Request OK");
                }
                catch (Exception ex)
                {
                    Console.WriteLine("\nAn error occurred!");
                    Console.WriteLine("Message :{0} ", ex.Message);
                }

                Console.ReadLine();
            }
        }