asp.net hata yönetimi. Hatanın serilize edilerek kaydedilmesi. kaynak : http://www.canbatuerdem.com/asp-net-exception-serialization/

gistfile1.txt

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Reflection;
using System.Web;
using System.Text;
 
namespace CANBATUERDEM
{
    public static class ExcepitonExtensions
    {
        #region Serialize To Html
        public static string SerializeToHtml(this Exception e)
        {
            StringBuilder sb = new StringBuilder();
            try
            {
                sb.Append(ApplicationToHtml());
                sb.Append(ExceptionToHtml(e));
 
                if (HttpContext.Current != null)
                {
                    sb.Append(HttpContextToHtml());
                    if (HttpContext.Current.Request.QueryString.Count > 0)
                    {
                        sb.Append(NameValueCollectionToHtml(HttpContext.Current.Request.QueryString, "Query String"));
                    }
                    if (HttpContext.Current.Request.Form.Count > 0)
                    {
                        sb.Append(NameValueCollectionToHtml(HttpContext.Current.Request.Form, "Form"));
                    }
                    sb.Append(CookiesToHtml(HttpContext.Current.Request.Cookies));
                    sb.Append(SessionToHtml(HttpContext.Current.Session));
                    if (HttpContext.Current.Request.ServerVariables.Count > 0)
                    {
                        sb.Append(NameValueCollectionToHtml(HttpContext.Current.Request.ServerVariables, "Server Variables"));
                    }
                }
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
 
            return sb.ToString();
        }
 
        private static string ApplicationToHtml()
        {
            StringBuilder sb = new StringBuilder();
            AssemblyName assembly = Assembly.GetExecutingAssembly().GetName();
 
            sb.Append("<table style=\"width:100%\" cellpadding=\"1\" cellspacing=\"0\">");
            sb.Append("<tr style=\"background-color:black;color:yellow;\"><td colspan=\"2\"><h3>Application</h3></td></tr>");
            sb.AppendFormat("<tr><td style=\"width:20%\"><b>Date</b></td><td>{0}</td></tr>", DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss K"));
            sb.AppendFormat("<tr style=\"background-color:silver;\"><td><b>Name</b></td><td>{0}</td></tr>", assembly.Name);
            sb.AppendFormat("<tr><td><b>Version</b></td><td>{0}</td></tr>", assembly.Version);
            sb.AppendFormat("<tr style=\"background-color:silver;\"><td><b>Culture Info</b></td><td>{0}</td></tr>", assembly.CultureInfo.Name);
            sb.AppendFormat("<tr><td><b>Processor Architecture</b></td><td>{0}</td></tr>", assembly.ProcessorArchitecture);
            sb.Append("</table><br>");
            return sb.ToString();
        }
 
        private static string ExceptionToHtml(Exception ex)
        {
            StringBuilder sb = new StringBuilder();
 
            sb.Append("<table style=\"width:100%\" cellpadding=\"1\" cellspacing=\"0\">");
            sb.AppendFormat("<tr style=\"background-color:black;color:red;\"><td colspan=\"2\"><h3>Exception:&nbsp;{0}</h3></td></tr>", ex.GetType().FullName);
            sb.AppendFormat("<tr><td colspan=\"2\"><b>Message:&nbsp;</b>{0}</td></tr>", HttpUtility.HtmlEncode(ex.Message));
            sb.AppendFormat("<tr><td colspan=\"2\"><b>Source:&nbsp;</b>{0}</td></tr>", ex.Source);
            if (ex.TargetSite != null)
            {
                sb.AppendFormat("<tr><td colspan=\"2\"><b>Target Site:&nbsp;</b>{0}</td></tr>", ex.TargetSite);
            }
            sb.Append(StackTraceToHtml(ex.StackTrace));
            sb.Append(DataToHtml(ex.Data));
            sb.Append(HelpLinkToHtml(ex.HelpLink));
            sb.Append("</table>");
 
            if (ex.InnerException != null)
            {
                sb.Append("<br>");
                sb.Append(ExceptionToHtml(ex.InnerException));
            }
 
            return sb.ToString();
        }
 
        private static string StackTraceToHtml(string stackTrace)
        {
            StringBuilder sb = new StringBuilder();
            string[] stackTraceArray = stackTrace.Split(new char[] { '\n' });
 
            if (!string.IsNullOrWhiteSpace(stackTrace))
            {
                sb.Append("<tr><td colspan=\"2\" style=\"background-color:black;color:white;\">Stack Trace</td></tr>");
            }
 
            for (int i = 0; i < stackTraceArray.Length; i++)
            {
                string alternateBackground = ((i % 2) == 0) ? string.Empty : " style=\"background-color:silver;\"";
                sb.AppendFormat("<tr{0}><td colspan=\"2\">{1}</td></tr>", alternateBackground, HttpUtility.HtmlEncode(stackTraceArray[i]));
            }
 
            return sb.ToString();
        }
 
        private static string DataToHtml(IDictionary data)
        {
            StringBuilder sb = new StringBuilder();
            int i = 0;
 
            if (data.Count > 0)
            {
                sb.Append("<tr><td colspan=\"2\" style=\"background-color:black;color:white;\">Data</td></tr>");
            }
 
            foreach (DictionaryEntry de in data)
            {
                string alternateBackground = ((i++ % 2) == 0) ? string.Empty : " style=\"background-color:silver;\"";
                sb.AppendFormat(" <tr{0}><td style=\"width:20%\"><b>{1}</b></td><td>{2}</td></tr>", alternateBackground, de.Key, HttpUtility.HtmlEncode(de.Value.ToString()));
            }
 
            return sb.ToString();
        }
 
        private static string HelpLinkToHtml(string helpLink)
        {
            StringBuilder sb = new StringBuilder();
 
            if (!string.IsNullOrWhiteSpace(helpLink))
            {
                sb.Append("<tr><td colspan=\"2\" style=\"background-color:black;color:white;\">Help Link</td></tr>");
                sb.AppendFormat("<tr><td colspan=\"2\"><a href=\"{0}\">{0}</a></td></tr>", helpLink);
            }
 
            return sb.ToString();
        }
 
        private static string HttpContextToHtml()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("<br>");
            sb.Append("<table style=\"width:100%\" cellpadding=\"1\" cellspacing=\"0\">");
            sb.AppendFormat("<tr style=\"background-color:black;color:blue;\"><td colspan=\"2\"><h3>Information</h3></td></tr>");
            sb.AppendFormat("<tr><td style=\"width:20%\"><b>Url</b></td><td>{0}</td></tr>", HttpContext.Current.Request.RawUrl);
            sb.AppendFormat("<tr style=\"background-color:silver;\"><td><b>Server Name</b></td><td>{0}</td></tr>", HttpContext.Current.Server.MachineName);
            sb.AppendFormat("<tr><td><b>Logon User</b></td><td>{0}</td></tr>", HttpContext.Current.User.Identity.Name);
            sb.AppendFormat("<tr style=\"background-color:silver;\"><td><b>Client IP</b></td><td>{0}</td></tr>", HttpContext.Current.Request.UserHostAddress);
            sb.AppendFormat("<tr><td><b>Client Browser</b></td><td>{0} ({1})</td></tr>", HttpContext.Current.Request.Browser.Browser, HttpContext.Current.Request.Browser.Version);
            if (HttpContext.Current.Request.UrlReferrer != null)
            {
                sb.AppendFormat("<tr style=\"background-color:silver;\"><td><b>Previous Page</b></td><td>{0}</td></tr>", HttpContext.Current.Request.UrlReferrer);
            }
            sb.Append("</table>");
            return sb.ToString();
        }
 
        private static string NameValueCollectionToHtml(NameValueCollection nameValueCollection, string header)
        {
            StringBuilder sb = new StringBuilder();
 
            sb.Append("<br>");
            sb.Append("<table style=\"width:100%\" cellpadding=\"1\" cellspacing=\"0\">");
            sb.AppendFormat("<tr style=\"background-color:black;color:green;\"><td colspan=\"2\"><h3>{0}</h3></td></tr>", header);
 
            for (int i = 0; i < nameValueCollection.Count; i++)
            {
                string alternateBackground = ((i % 2) == 0) ? string.Empty : " style=\"background-color:silver;\"";
                sb.AppendFormat("<tr{0}><td style=\"width:20%\"><b>{1}</b></td><td>{2}</td></tr>", alternateBackground, nameValueCollection.Keys[i], HttpUtility.HtmlEncode(nameValueCollection[i]));
            }
 
            sb.Append("</table>");
            return sb.ToString();
        }
 
        private static string CookiesToHtml(HttpCookieCollection httpCookieCollection)
        {
            NameValueCollection nameValueCollection = new NameValueCollection();
            try
            {
                foreach (string str in httpCookieCollection.Keys)
                {
                    nameValueCollection.Add(str, httpCookieCollection[str].Value);
                }
            }
            catch (Exception ex)
            {
                nameValueCollection.Add("Error", ex.Message);
            }
            return (nameValueCollection.Count > 0) ? NameValueCollectionToHtml(nameValueCollection, "Cookies") : string.Empty;
        }
 
        private static string SessionToHtml(System.Web.SessionState.HttpSessionState httpSessionState)
        {
            NameValueCollection nameValueCollection = new NameValueCollection();
            try
            {
                nameValueCollection.Add("IsNewSession", httpSessionState.IsNewSession.ToString());
                nameValueCollection.Add("SessionID", httpSessionState.SessionID);
                foreach (string str in httpSessionState.Keys)
                {
                    nameValueCollection.Add(str, httpSessionState[str] == null ? string.Empty : httpSessionState[str].ToString());
                }
            }
            catch (Exception ex)
            {
                nameValueCollection.Add("Error", ex.Message);
            }
            return NameValueCollectionToHtml(nameValueCollection, "Session");
        }
        #endregion Html
 
        #region Serialize To Text
        public static string SerializeToText(this Exception e)
        {
            StringBuilder sb = new StringBuilder();
            try
            {
                sb.Append(ExceptionToText(e));
 
                if (HttpContext.Current != null)
                {
                    sb.Append(HttpContextToText());
                    if (HttpContext.Current.Request.QueryString.Count > 0)
                    {
                        sb.Append(NameValueCollectionToText(HttpContext.Current.Request.QueryString, "Query String"));
                    }
                    if (HttpContext.Current.Request.Form.Count > 0)
                    {
                        sb.Append(NameValueCollectionToText(HttpContext.Current.Request.Form, "Form"));
                    }
                    sb.Append(CookiesToText(HttpContext.Current.Request.Cookies));
                    sb.Append(SessionToText(HttpContext.Current.Session));
                }
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
 
            return sb.ToString();
        }
 
        private static string ExceptionToText(Exception ex)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("----- Exception -----\n");
            sb.AppendFormat("Full Name   : {0}\n", ex.GetType().FullName);
            sb.AppendFormat("Message     : {0}\n", ex.Message);
            sb.AppendFormat("Source      : {0}\n", ex.Source);
            if (ex.TargetSite == null)
            {
                sb.AppendFormat("Target Site : {0}\n", ex.TargetSite);
            }
            if (ex.InnerException == null)
            {
                sb.AppendFormat("\n{0}", ExceptionToText(ex.InnerException));
            }
 
            return sb.ToString();
        }
 
        private static string HttpContextToText()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("\n");
            sb.Append("----- Information -----\n");
            sb.AppendFormat("Url            : {0}\n", HttpContext.Current.Request.RawUrl);
            sb.AppendFormat("Server Name    : {0}\n", HttpContext.Current.Server.MachineName);
            sb.AppendFormat("Logon User     : {0}\n", HttpContext.Current.User.Identity.Name);
            sb.AppendFormat("Client IP      : {0}\n", HttpContext.Current.Request.UserHostAddress);
            sb.AppendFormat("Client Browser : {0} ({1})\n", HttpContext.Current.Request.Browser.Browser, HttpContext.Current.Request.Browser.Version);
            sb.AppendFormat("Url            : {0}\n", HttpContext.Current.Request.RawUrl);
            sb.AppendFormat("Url            : {0}\n", HttpContext.Current.Request.RawUrl);
            if (HttpContext.Current.Request.UrlReferrer != null)
            {
                sb.AppendFormat("Previous Page  : {0}\n", HttpContext.Current.Request.UrlReferrer);
            }
            
            return sb.ToString();
        }
 
        private static string NameValueCollectionToText(NameValueCollection nameValueCollection, string header)
        {
            StringBuilder sb = new StringBuilder();
 
            sb.Append("\n");
            sb.AppendFormat("----- {0} -----\n", header);
 
            for (int i = 0; i < nameValueCollection.Count; i++)
            {
                sb.AppendFormat("{0} : {1}\n", nameValueCollection.Keys[i], nameValueCollection[i]);
            }
 
            return sb.ToString();
        }
 
        private static string CookiesToText(HttpCookieCollection httpCookieCollection)
        {
            NameValueCollection nameValueCollection = new NameValueCollection();
            try
            {
                foreach (string str in httpCookieCollection.Keys)
                {
                    nameValueCollection.Add(str, httpCookieCollection[str].Value);
                }
            }
            catch (Exception ex)
            {
                nameValueCollection.Add("Error", ex.Message);
            }
            return (nameValueCollection.Count > 0) ? NameValueCollectionToText(nameValueCollection, "Cookies") : string.Empty;
        }
 
        private static string SessionToText(System.Web.SessionState.HttpSessionState httpSessionState)
        {
            NameValueCollection nameValueCollection = new NameValueCollection();
            try
            {
                nameValueCollection.Add("IsNewSession", httpSessionState.IsNewSession.ToString());
                nameValueCollection.Add("SessionID", httpSessionState.SessionID);
                foreach (string str in httpSessionState.Keys)
                {
                    nameValueCollection.Add(str, httpSessionState[str] == null ? string.Empty : httpSessionState[str].ToString());
                }
            }
            catch (Exception ex)
            {
                nameValueCollection.Add("Error", ex.Message);
            }
            return NameValueCollectionToText(nameValueCollection, "Session");
        }
        #endregion Text
    }
}

Kullanımı. global.asax da application_error da

    protected void Application_Error(object sender, EventArgs e)
    {
        Exception mg = Server.GetLastError();
        string hata = mg.SerializeToHtml();
        ...
    }