Hi, Mufi.

>I want to conver all first letter in captial after the white space.

It seems that there's no native method to do that in .NET... anyway, you can either use the VFP Toolkit for .NET (http://www.gotdotnet.com/team/vfp/), or use its source-code wrapping it up in your own classes. See:

Public Shared Function Proper(ByVal cString As String) As String

'Create the StringBuilder
Dim sb As StringBuilder = New StringBuilder(cString)

Dim i As Integer, j As Integer = 0
Dim nLength As Integer = cString.Length

For i = 0 To nLength - 1 Step i + 1
      If (i = 0) Or (Char.IsWhiteSpace(cString.Chars(i))) Then
             If i = 0 Then
                 j = i
             Else
                 j = i + 1
             End If

             sb.Remove(j, 1)
             sb.Insert(j, Char.ToUpper(cString.Chars(j)))
      End If
Next
Return sb.ToString()
End Function

HTH