public static void WriteLog(string
strError, string MethodName, string parameters, string
pageName)
{
string FileName = HttpContext.Current.Server.MapPath("Path/logs_" + DateTime.Now.ToString("yyyyMMdd") + ".txt");
string strText = DateTime.Now.ToString()
+ "\t" + pageName + "\t\t" + MethodName + "\t" + parameters + "\t" + strError;
if (!File.Exists(FileName))
{
// Create New Text File
FileStream fStream = new
FileStream(FileName, FileMode.Create, FileAccess.Write);
StreamWriter sw = new
StreamWriter(fStream);
sw.WriteLine(strText);
sw.Close();
fStream.Close();
}
else
{
FileInfo finfo = new
FileInfo(FileName);
while (IsFileLocked(finfo))
{
Thread.Sleep(500);
}
finfo = null;
FileStream aFile = new
FileStream(FileName, FileMode.Append, FileAccess.Write);
StreamWriter sw = new
StreamWriter(aFile);
sw.WriteLine(strText);
sw.Close();
aFile.Close();
}
}
private static bool IsFileLocked(FileInfo
file)
{
FileStream stream = null;
try
{
stream = file.Open(FileMode.Open, FileAccess.ReadWrite, FileShare.None);
}
catch (IOException)
{
//the file is unavailable because it is:
//still being written to
//or being processed by another thread
//or does not exist (has already been processed)
return true;
}
finally
{
if (stream != null)
stream.Close();
}
//file is not locked
return false;
}
