create LogError file(C# Coding) [modified] for WindowsApplication

[jojoba2010]

C# Coding WindowsApplication :

1. How can I have Log for error in try catch with this informations 1.Error Name : 2.Form Name: 3.Function Name that error occurred : 4.Date_Time when error occurred : 2) Where I save this log info. I mean shall i save them in XML or word File ?

modified on Thursday, February 4, 2010 4:38 AM

[Zar Ni]

U may want to use log4net. It's quite simple. :) A Brief Introduction to the log4net logging library, using C#[^]

[jojoba2010]

I wanna this log for windowsApplication ?! So Please HELP !

[Zar Ni]

Configure Log4Net for Desktop and Web Applications[^]

[Wamuti]

You are being helped. log4net is a tool to help the programmer output log statements to a variety of output targets. http://logging.apache.org/log4net/[^] If you want to re invent the wheel you can create a log file, for example, mylogger.logx using the StreamWriter class maybe like this:

public void Log(string Err)
{
using (StreamWriter sw = new StreamWriter("log.txt", true))
{
sw.WriteLine();
sw.WriteLine();
sw.WriteLine("NEW LOG");
sw.WriteLine("-------------------");
sw.WriteLine();
sw.WriteLine();
sw.Write("The date is: ");
sw.WriteLine(DateTime.Now);
sw.WriteLine();
sw.WriteLine();
sw.WriteLine("-------------------");
sw.WriteLine();
sw.WriteLine(Err);
}
}

Then,

jojoba2010 wrote:

Error Name :

assuming you caught the exception in the catch block like this

catch (Exception ex)
{
Log(ex.Message.ToString());
}

jojoba2010 wrote:

Form Name:

Log(this.Text);

jojoba2010 wrote:

Function Name that error occurred :

Log(ex.Source);

jojoba2010 wrote:

Date_Time when error occurred :

The Log function can already do that. Read about Exception and see the many things you can know about an exception that has occured!

Wamuti: Any man can be an island, but islands to need water around them! Edmund Burke: No one could make a greater mistake than he who did nothing because he could do only a little.

[jojoba2010]

I want the function name where this error occurred in ! I mean in which this try and catch is ?

[Luc Pattyn]

Have a look at Exception.TargetSite then. :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

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I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that.
[The QA section does it automatically now, I hope we soon get it on regular forums as well]

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[Zar Ni]

u can get the current class and method name like this. Below as a class variable.

private static readonly string _className =
System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.ToString();

Put below code inside each function that u want to log.

string thisMethod = _className + "." + System.Reflection.MethodBase.GetCurrentMethod().Name + "()";

then whenever u want to log the info, u can just simply use

logger.info("Error Occurred + thisMethod);

[Pr teek B h]

jojoba2010 wrote:

2. Where I save this log info. I mean shall i save them in XML or word File ?

you can save the data anyways you want it. xml is structured and easier to browse through. text is easy to implement.

jojoba2010 wrote:

1. How can I have Log for error in try catch with this informations 1.Error Name : 2.Form Name: 3.Function Name that error occurred : 4.Date_Time when error occurred :

void AddLogEntry(String errorName, String formName, String functionName)
{
DateTime entryTime = DateTime.Now;

//depending on how you want to save the entry i.e. xml or plain text
//append the text in the log file with the entry
//search in google on how to add text to a text/xml file.
}

or, you can do this:

void AddLogEntry(Exception ex)
{
String errorName = ex.message;
String trace = ex.StackTrace; //stack trace will give you a brief history on why the error occured
DateTime entryTime = DateTime.Now;

//depending on how you want to save the entry i.e. xml or plain text
//append the text in the log file with the entry
//search in google on how to add text to a text/xml file.
}

hope this helps and good luck :)