How can I use HTML5 geolocation in C# application

Question

I\'m developing an anti-theft software to get computers exact location. Notebooks with built-in gps are very rare in my country so I have to use HTML5 Geolocation in my applicat

Answer 1

You can embed a webkit browser into your application by using PhantomJS. PhantomJS is a headless browser and can be added to your application through searching NuGet or the NuGet command line PM> Install-Package PhantomJS. Once PhantomJS has been added to your project, you'll want to build a file to control phantom something like:

 public string PhantomJson(string phantomControlFile, params string[] arguments)
        {
            string returnJsonString = String.Empty;

            if (!String.IsNullOrEmpty(URL))
            {
                ProcessStartInfo startInfo = new ProcessStartInfo
                {
                    CreateNoWindow = true,
                    RedirectStandardError = true,
                    RedirectStandardOutput = true,
                    FileName = Path.Combine(PhantomExecutionPath, "phantomjs.exe"),
                    UseShellExecute = false,
                    WorkingDirectory = PhantomExecutionPath,
                    Arguments = @"--proxy-type=none --ignore-ssl-errors=true {1} ""{0}"" {2}".FormatWith(URL, phantomControlFile, 
                        arguments.Any() ? String.Join(" ", arguments) : String.Empty)
                };

                StringBuilder receivedData = new StringBuilder();
                using (Process p = Process.Start(startInfo))
                {
                    p.OutputDataReceived += (o, e) =>
                    {
                        if (e.Data != null && e.Data != "failed")
                        {
                            //returnJsonString = e.Data;
                            receivedData.AppendLine(e.Data);
                        }
                    };
                    p.BeginOutputReadLine();
                    p.WaitForExit();
                }
                returnJsonString = receivedData.ToString();

                if (!String.IsNullOrEmpty(returnJsonString))
                {
                    return returnJsonString;
                }
                else
                {
                    throw new ArgumentNullException("Value returned null. Unable to retrieve data from server");
                }
            }
            else
            {
                throw new ArgumentNullException("Url cannot be null");
            }
        }

Then you'll want to build a control file to tell phantomjs where to go; something like:

var args, myurl, page, phantomExit, renderPage, system;

system = require("system");
args = system.args;
page = null;
myurl = args[1];

phantomExit = function(exitCode) { // this is needed as there are time out issues when it tries to exit.
  if (page) {
    page.close();
  }
  return setTimeout(function() {
    return phantom.exit(exitCode);
  }, 0);
};

renderPage = function(url) {
  page = require("webpage").create();
    return page.open(url, function(status) {
      if (status === 'success') {
         // Process Page and console.log out the values
         return phatomExit(0);
      } else {
         console.log("failed");
         return phantomExit(1);
      }
     });
   };
  renderPage(myurl);