Communicating with web application from windows application with out using web service

Hi,

I am working with a windows application where i need to pass login name and password to a web application and get result from that web application whether that passed login and password are valid or invalid.

I dont have any information on web services exposed that web application. SO i can not consume the web service.

But still i wnt to get the result. How can I handle this.

Please provide the answer ASAP.

Thanks,
Srinivas Mateti
futurebuildersAsked:
Who is Participating?
 
madginoConnect With a Mentor Commented:
You can make a http request and read the response, it shouldn't be very complicated using .NET.
0
 
futurebuildersAuthor Commented:
If in that case can u plase provide some sample code.it will be helpful to my work.


Thanks in advance
Srinivas Mateti
0
 
madginoConnect With a Mentor Commented:
So first you need to see how the website handles the POST and which fields are submitted (usually there are username & passowrd). For this you need to have a debugger/proxy to show you the POST data, I would recommend you fiddler (http://www.fiddler2.com/fiddler2/).
So install fiddler, go to the website and login. When you press the login button check in fiddler the POST variables that are used.

Then you create a similar post in your application with the same POST variables, you have here some examples:
http://www.netomatix.com/httppostdata.aspx
0
Learn to develop an Android App

Want to increase your earning potential in 2018? Pad your resume with app building experience. Learn how with this hands-on course.

 
futurebuildersAuthor Commented:
thanks for your response.

So my client application is windows aplication.I am unable to use HTTPRequest class in windows application.

Your solution will work in web application or it will work in windows also?

Please clarify my doubt.

If it works for windows application also then how can i use httprequest class in windows application

Thanks
Srinivas Mateti
0
 
madginoConnect With a Mentor Commented:
You can use HttpWebRequest from windows application, it's in System.Net.

You have attached the function that I'm using in my windows app. The difference is that I'm doing a simple GET you must do a POST like in the other examples.

public static string GetPage(string strURL)
        {
            try
            {

                //get main page
                byte retries = 0;
                retry:

                HttpWebRequest wRequest = (HttpWebRequest)WebRequest.Create(strURL);

                wRequest.Proxy = WebRequest.GetSystemWebProxy();
                wRequest.Proxy.Credentials = CredentialCache.DefaultCredentials;
                wRequest.Credentials = CredentialCache.DefaultCredentials;
                wRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705)";
                wRequest.CookieContainer = new CookieContainer();

                Uri swUri = new Uri(strURL);
                
                HttpWebResponse wResponse;
           
                try
                {
                    wResponse = (HttpWebResponse)wRequest.GetResponse();
                }
                catch (WebException ex)
                {
                    //let's log the error
                    retries++;
                    if (retries > 2) throw ex;
                    goto retry;
                }

                Encoding enc;
                if ((wResponse.ContentEncoding != null) && (wResponse.ContentEncoding.Length > 0))
                {
                    enc = Encoding.GetEncoding(wResponse.ContentEncoding);
                }
                else if ((wResponse.CharacterSet != null) && (wResponse.CharacterSet.Length > 0))
                {
                    enc = Encoding.GetEncoding(wResponse.CharacterSet);
                }
                else
                {
                    //enc = Encoding.GetEncoding(1252);  // Windows default Code Page
                    enc = Encoding.GetEncoding("utf-8");
                }

                StreamReader loResponseStream = new StreamReader(wResponse.GetResponseStream(), enc);

                string strHtml = loResponseStream.ReadToEnd();

                wResponse.Close();
                loResponseStream.Close();

                return strHtml;

            }
            catch (Exception ex)
            {
                Utilities.LogError("Error on " + strURL + " =>" + ex.Message.ToString(), ex.StackTrace.ToString(), false);
            }
            finally
            {
            }
            return "";

        }

Open in new window

0
 
futurebuildersAuthor Commented:
Hi,

Here again a issue. My taget url contains 2 web sites.

Please see my url "https://us.battle.net/login/en/login.xml?ref=https://www.worldofwarcraft.com/account/&app"

How to handle 2 urls in sigle httprequst class.

I hv to pass user name and password and get the validation result for the user.
Please give me some guidelines as i am new to this kind of environment.

Thanks,
Srinivas Mateti
0
 
madginoConnect With a Mentor Commented:
Sorry for now I don't have the time to write the code for you but maybe this will work:
http://pastebin.com/QB4B1C3t

You actually have only one url, the other one is a parameter of the main url.
0
All Courses

From novice to tech pro — start learning today.