Hi Bonnie,

I used such codes given below->.............

Imports System.IO
Imports System.Diagnostics
Public Class Form1
Inherits System.Windows.Forms.Form
Public watchfolder As FileSystemWatcher
Public ab As String
Public lpUserName As String
Public lpnLength, lResult As Integer
Public strString As String


Private Declare Function w32_WNetGetUser Lib "mpr.dll" Alias "WNetGetUserA" (ByVal lpszSeverName As String, ByVal lpszUserName As String, ByRef lpcchBuffer As Integer) As Integer

>>>>>>>>>>> The above Function used for get the user name>>>>>>>>>>>>>>>>>>>>>

Private Declare Function GetComputerName Lib "kernel32" Alias "GetComputerNameA" (ByVal lpBuffer As String, ByRef nSize As Integer) As Integer

>>>>>>>>>>> The above Function used for get the Computer name>>>>>>>>>>>>>>>>>>>>>

Private Sub btn_startwatch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_startwatch.Click
watchfolder = New System.IO.FileSystemWatcher

'this is the path we want to monitor
watchfolder.Path = txt_watchpath.Text
watchfolder.IncludeSubdirectories = True

'Add a list of Filter we want to specify
'make sure you use OR for each Filter as we need to
'all of those

watchfolder.NotifyFilter = IO.NotifyFilters.DirectoryName
watchfolder.NotifyFilter = watchfolder.NotifyFilter Or _
IO.NotifyFilters.FileName
watchfolder.NotifyFilter = watchfolder.NotifyFilter Or _
IO.NotifyFilters.Attributes


' add the handler to each event
AddHandler watchfolder.Changed, AddressOf logchange
AddHandler watchfolder.Created, AddressOf logchange
AddHandler watchfolder.Deleted, AddressOf logchange

' add the rename handler as the signature is different
AddHandler watchfolder.Renamed, AddressOf logrename
'AddHandler watchfolder.Changed, AddressOf syname

'Set this property to true to start watching
watchfolder.EnableRaisingEvents = True
btn_startwatch.Enabled = False
btn_stop.Enabled = True
End Sub
'End of code for btn_start_click
Private Sub logchange(ByVal source As Object, ByVal e As _
System.IO.FileSystemEventArgs)

strString = New String(Chr(0), 255)
'Get the computer name
GetComputerName(strString, 255)
'remove the unnecessary chr$(0)'s
strString = Left.ToString(strString)

If e.ChangeType = IO.WatcherChangeTypes.Changed Then
txt_folderactivity.Text &= "File " & e.FullPath & _
" has been modified" & " Event Time " & TimeOfDay() & " System " & strString & vbCrLf

End If
If e.ChangeType = IO.WatcherChangeTypes.Created Then
txt_folderactivity.Text &= "File " & e.FullPath & _
" has been created" & " Event Time " & TimeOfDay() & " System " & strString & vbCrLf

End If
If e.ChangeType = IO.WatcherChangeTypes.Deleted Then
txt_folderactivity.Text &= "File " & e.FullPath & _
" has been deleted" & " Event Time " & TimeOfDay() & " System " & strString & vbCrLf

End If
End Sub

Public Sub logrename(ByVal source As Object, ByVal e As System.IO.RenamedEventArgs)

txt_folderactivity.Text &= "File" & e.OldName & _
" has been renamed to " & e.Name & " Event Time " & TimeOfDay() & " System " & strString & vbCrLf
lpUserName = New String(Chr(0), 256)
lResult = w32_WNetGetUser(vbNullString, lpUserName, 256)
lpUserName = Left.ToString(lpUserName)
End Sub
Private Sub btn_stop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_stop.Click
watchfolder.EnableRaisingEvents = False
btn_startwatch.Enabled = True
btn_stop.Enabled = False
txt_folderactivity.Text = ""
End Sub

Public Sub syname(ByVal sender As Object, ByVal e As System.IO.ErrorEventArgs)


End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lpUserName = New String(Chr(0), 256)
lResult = w32_WNetGetUser(VBNullString,lpUserName, 256)
lpUserName = Left.ToString(lpUserName)
MessageBox.Show(lpUserName)


'Create a buffer
strString = New String(Chr(0), 255)
' Get the computer name
GetComputerName(strString, 255)
'remove the unnecessary chr$(0)'s
strString = Left.ToString(strString)
'Show the computer name
MessageBox.Show(strString)


End Sub
End Class

But I want to watch all client activity with the server through FileSystemWatcher.

Regards

Vijay