Display Log in Logviewer

1) Create the FileSystemWatcher and set its properties.



FileSystemWatcher_Log_1.Path = Directory.GetParent("C:\\temp").FullName;

FileSystemWatcher_Log_1.Filter = "MyLogFile.log";

NotifyFilters notifyFileters = new NotifyFilters();

notifyFileters = notifyFileters
NotifyFilters.LastWrite;

// You can choose other notification filters


FileSystemWatcher_Log_1.NotifyFilter = notifyFileters;

FileSystemWatcher_Log_1.EnableRaisingEvents = true;




2) Set the event handler.



this.FileSystemWatcher_Log_1.Changed += new

System.IO.FileSystemEventHandler(this.FileSystemWatcher_Changed);



3) Update GUI when event occours



// create stream writer only once so that whenever new log is appended in the log file,

// only that text will be shown in the list view (or which ever the gui component you are using).

if (null == sr_Log_1)

{

sr_Log_1 = new StreamReader(new FileStream(SelectedFileName_Log1_textbox.Text,

FileMode.Open, FileAccess.Read, FileShare.ReadWrite), true);

}

string line;

while (sr_Log_1.EndOfStream != true)

{

line = sr_Log_1.ReadLine();

if (line.Trim().Length == 0)

{

continue;

}

Log_1_listBox.Items.Add(line);

Log_1_listBox.TopIndex = Log_1_listBox.Items.Count - 26 + 1;



}