how to save exception in txt file ?

Question

2.33/5 (3 votes)

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C#

public DataTable InsertItemDetails(FeedRetailPL objFeedRetPL)
   {
       DataTable GetListID = new DataTable();
       try
       {
            SqlParameter[] arParams = new SqlParameter[4];

           arParams[0] = new SqlParameter("@Date", typeof(DateTime));
           arParams[0].Value = objFeedRetPL.requestdate;

       }
      catch (Exception ex)
       {
           string dir = @"C:\Error.txt";  // folder location
           if (!Directory.Exists(dir))
           {
               Directory.CreateDirectory(dir);
               File.AppendAllText(Server.MapPath("~/Error.txt"), "Message :" + ex.Message + "<br/>" + Environment.NewLine + "StackTrace :" + ex.StackTrace +
          "" + Environment.NewLine + "Date :" + DateTime.Now.ToString());
               string New = Environment.NewLine + "-----------------------------------------------------------------------------" + Environment.NewLine;
               File.AppendAllText(Server.MapPath("~/Error.txt"), New);
           }
       }
 }

Here, I want to save an Exception in "C:\" ..I am trying In DAL... How to save the Exception In
C drive Error.txt

Posted 23-Jan-14 1:04am

Siva Hyderabad

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5 solutions

Solution 3

You should have mentioned the error message & its related details. Possibly permission related issue.

But storing such things at ROOT drive(particularly C:\) is not a recommended way.

And my another suggestion is go with some opensource library like NLog[^], that'll reduce your headaches.

Posted 23-Jan-14 1:20am

thatraja

Solution 4

use this function in your business layer class file:-

public static void ErrorLog(Exception errorDtl, string subDtl)
{
	string err = null;
	if (errorDtl.Message != "Thread was being aborted.") {
		DateTime fileExistDate = default(DateTime);
		fileExistDate = DateTime.Today;
		if (System.IO.File.Exists("C:\\Users\\Logs\\Exception_" + Strings.Format(fileExistDate, "yyyyMMdd") + ".txt") == true) {
			err = Constants.vbCrLf + "Page Name :-" + HttpContext.Current.Request.Url.LocalPath;
			err = err + Constants.vbCrLf + "LogIn User :-" + HttpContext.Current.Session("Login");
			err = err + Constants.vbCrLf + "Error Log Date Time :-" + DateAndTime.Now;
			err = err + Constants.vbCrLf + "Error Message :-" + errorDtl.Message;
			err = err + Constants.vbCrLf + "Source :-" + errorDtl.Source;
			err = err + Constants.vbCrLf + "Trace :-" + errorDtl.StackTrace;

			string FILE_NAME = "C:\\Users\\Logs\\Exception_" + Strings.Format(fileExistDate, "yyyyMMdd") + ".txt";
			if (System.IO.File.Exists(FILE_NAME) == true) {
				System.IO.StreamWriter objWriter = null;

				objWriter = File.AppendText(FILE_NAME);
				objWriter.WriteLine("=====================================================================");
				objWriter.WriteLine(err);
				objWriter.Flush();
				objWriter.Close();
			}
		} else {
			System.IO.FileStream fileCreate = null;
			DateTime fileDate = default(DateTime);
			fileDate = DateTime.Today;
			if (System.IO.Directory.Exists("C:\\Users\\CRMLogs")) {
				fileCreate = System.IO.File.Create("C:\\Users\\Logs\\Exception_" + Strings.Format(fileDate, "yyyyMMdd") + ".txt ");
				fileCreate.Close();
			} else {
				System.IO.Directory.CreateDirectory("C:\\Users\\Logs");
				fileCreate = System.IO.File.Create("C:\\Users\\Logs\\Exception_" + Strings.Format(fileDate, "yyyyMMdd") + ".txt ");
				fileCreate.Close();
			}

			err = Constants.vbCrLf + "Page Name :-" + HttpContext.Current.Request.Url.LocalPath;
			err = err + Constants.vbCrLf + "LogIn User :-" + HttpContext.Current.Session("Login");
			err = err + Constants.vbCrLf + "Error Log Date Time :-" + DateAndTime.Now;
			err = err + Constants.vbCrLf + "Error Message :-" + errorDtl.Message;
			err = err + Constants.vbCrLf + "Source :-" + errorDtl.Source;
			err = err + Constants.vbCrLf + "Trace :-" + errorDtl.StackTrace;

			string FILE_NAME = "C:\\Users\\Logs\\Exception_" + Strings.Format(fileDate, "yyyyMMdd") + ".txt";
			if (System.IO.File.Exists(FILE_NAME) == true) {
				System.IO.StreamWriter objWriter = null;

				objWriter = File.AppendText(FILE_NAME);
				objWriter.WriteLine("=====================================================================");
				objWriter.WriteLine(err);
				objWriter.Flush();
				objWriter.Close();
			}
		}
	}
}

and add (Bl Class file name) StaticFunctions.ErrorLog(ex, "") in catch like:-

C#

catch (Exception ex) {
    StaticFunctions.ErrorLog(ex, "");
}

Posted 23-Jan-14 1:21am

TrushnaK

Solution 2

try this.. :)

C#

public static void WriteLogFile(string fileName, string methodName, string message) 

{ 

try
{ 

if (!string.IsNullOrEmpty(message)) 

{ 

using (FileStream file = new FileStream(Application.StartupPath + "\\Log.txt", FileMode.OpenOrCreate, FileAccess.Write)) 

{ 

StreamWriter streamWriter = new StreamWriter(file); 

streamWriter.WriteLine((((System.DateTime.Now + " - ") + fileName + " - ") + methodName + " - ") + message); 

streamWriter.Close(); 

} 

} 

} 

catch

{ 

} 

}

reference.. :)
Log Error or Exception in a Text File[^]

Posted 23-Jan-14 1:18am

Nirav Prabtani

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OriginalGriff · Accepted Answer · 2014-01-23T01:18:00

First off, don't try to save anything in the root folder of any drive, and particularly not in the root of your boot drive: From Vista onwards it takes special permission to avoid virus tampering, and it will not get any easier.

Second, if this is really a ASP.NET application, you will almost certainly never get permission from your web host to access the true root directory, as this could cause huge problems with other sites if permission was given.

So get rid of this completely:

C#

string dir = @"C:\Error.txt";  // folder location
if (!Directory.Exists(dir))
{
    Directory.CreateDirectory(dir);

And the rest of your code should work (but I'd use a folder away from my website root just to keep things tidy)

phil.o · Accepted Answer · 2014-01-23T01:29:00

The most obvious is that C:\Error.txt is not a directory, but a file. So your catch block should be more like:

C#

catch (Exception ex) {
   string path = @"C:\Error.txt";  // file path
   using (StreamWriter sw = new StreamWriter(path, true)) { // If file exists, text will be appended ; otherwise a new file will be created
      sw.Write(string.Format("Message: {0}<br />{1}StackTrace :{2}{1}Date :{3}{1}-----------------------------------------------------------------------------{1}", ex.Message, Environment.NewLine, ex.StackTrace, DateTime.Now.ToString()));
   }
}

Be careful! You are trying to write at the root of the system drive ; it may cause problems, especially if this code is executed under IIS application pool identity. Better choose a directory inside your web root to write to.

Good luck.