Code to create log files in C#.Net|Asp.Net

Introduction:

In my previous article I have explained about how to create, delete and check whether the directory exists using C#.Net. In this article I am going to explain about  How to create log files in C#.Net.

Explanation:

Log files are useful to track any runtime errors and exceptions in all the applications. Below code will code will get the Message and Pagename as the input and creates the log file in that date. For that first i have imported below two namespaces.

using System.Configuration;

using System.IO;

In the below code I have initialized class with two parameters. One is filename and another one is to append the message in the log files. If you didn’t pass the second parameter as true then it won’t append the data in the log file.  It means the log file will contain only the finally inserted message. Complete code to create log files is here.

public void AddtoLogFile(string Message, string WebPage)

{

string LogPath = ConfigurationManager.AppSettings["LogPath"].ToString();

string filename = "Log_" + DateTime.Now.ToString("dd-MM-yyyy") + ".txt";

string filepath = LogPath + filename;

if (File.Exists(filepath))

{

    using (StreamWriter writer = new StreamWriter(filepath,true))

    {

        writer.WriteLine("-------------------START-------------" + DateTime.Now);

        writer.WriteLine("Source :" + ErrorPage);

        writer.WriteLine(Message);

        writer.WriteLine("-------------------END-------------" + DateTime.Now);

    }

}

else

{

    StreamWriter writer = File.CreateText(filepath);

    writer.WriteLine("-------------------START-------------" + DateTime.Now);

    writer.WriteLine("Source :" + ErrorPage);

    writer.WriteLine(Message);

    writer.WriteLine("-------------------END-------------" + DateTime.Now);

    writer.Close();

}

}

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