Question on debug error

[toyotajon93]

Hey guy, not sure if my last post got here, my internet is going in and out... Thanks TWC

Hopefully this isnt a double post...

Getting this error while debugging

NULLReferenceExceptionOccured

Not sure why, here is the code;

       public void LogOnToEmross()
        {
            try
            {
                HttpWebRequest requestEvents = WebRequest.Create(string.Concat(new object[] { this.server.server, "game/get_cdinfo_api.php?key=", this.userkey.key, "&city=", this.userinfo.user.city[0].id, "&_l=en" })) as HttpWebRequest;
                using (HttpWebResponse response = requestEvents.GetResponse() as HttpWebResponse)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream());
                    if (reader.ReadToEnd().Contains("code:0"))
                    {
                        HttpWebRequest requestEvents2 = WebRequest.Create(this.server.server + "game/get_userinfo_api.php?key=" + this.userkey.key + "&_l=en") as HttpWebRequest;
                        using (HttpWebResponse response2 = requestEvents2.GetResponse() as HttpWebResponse)
                        {
                            string responseText = new StreamReader(response2.GetResponseStream()).ReadToEnd();
                            string[] seperator2 = new string[] { "\"ret\":" };
                            string[] temp2 = responseText.Split(seperator2, StringSplitOptions.None);
                            UserInfo testResult = Json.Deserialize<UserInfo>(temp2[1].Substring(0, temp2[1].Length - 3).TrimEnd(this.trimmer).TrimStart(this.trimmer));
                            this.userinfo = testResult;
                        }
                        this.GetChestsAndKeys();
                    }
                    else
                    {
                        this.LogOn();
                        this.GetChestsAndKeys();
                    }
                }
            }
            catch
            {
                this.LogOn();
                this.GetChestsAndKeys();
            }
        }

[enfekted]

To make answering this simpler, a debugger should be able to tell you exactly what line the exception occurred at. Most debuggers can even break on exception allowing for you to take a look at the state of objects at the time of the exception.

Personally, I use Visual Studio and when I get a null ref exception (not from code i wrote of course ) I'll make sure "throw" for null ref exception is checked in the "Debug->Exceptions..." dialog. Then when the application breaks, I'll hover over variables on the line until I find the one that is null & shouldn't be, then I'll backtrack to find out why its null.

Hope this helps...