PadLeft, PadRight and PadCenter
Public Class Tester
    Public Shared Sub Main
        Dim content1 As String
        Dim content2 As String
        Dim content3 As String
        Dim content4 As String
        content1 = "Not padded"
        content2 = "PadLeft".PadLeft(50)
        content3 = "PadRight".PadRight(50)
        content4 = "PadCenter"
        content4 = content4.PadLeft((50 + _
           content4.Length) \ 2).PadRight(50)
        Console.WriteLine(String.Format("{0}{4}{1}{4}{2}{4}{3}", _
           content1, content2, content3, content4, vbNewLine))    
    End Sub
End Class 
Not padded
                                           PadLeft
PadRight
                    PadCenter
PadLeft, PadRight and PadCenter with dot
Public Class Tester
    Public Shared Sub Main
        Dim content1 As String
        Dim content2 As String
        Dim content3 As String
        Dim content4 As String
        content1 = "Not padded"
        content2 = "PadLeft".PadLeft(50, "."c)
        content3 = "PadRight".PadRight(50, "."c)
        content4 = "PadCenter"
        content4 = content4.PadLeft((50 + content4.Length) \ 2, _
           "."c).PadRight(50, "."c)
        Console.WriteLine(String.Format("{0}{4}{1}{4}{2}{4}{3}", _
           content1, content2, content3, content4, vbNewLine))  
    End Sub
End Class 
Not padded
...........................................PadLeft
PadRight..........................................
....................PadCenter.....................
String.Pad
public class Test
   public Shared Sub Main
        Dim strLeftPad, strRightPad As String
        strLeftPad = "[" & "Visual Basic Express".PadLeft(28) & "]"
        strRightPad = "[" & "Visual Basic Express".PadRight(28) & "]"
        Console.WriteLine(strLeftPad & vbCrLf & strRightPad)
        strLeftPad = "[" & "Visual Basic Express".PadLeft(28, "@") & "]"
        strRightPad = "[" & "Visual Basic Express".PadRight(28, ".") & "]"
        Console.WriteLine(strLeftPad & vbCrLf & strRightPad)
   End Sub
End class 
[        Visual Basic Express]
[Visual Basic Express        ]
[@@@@@@@@Visual Basic Express]
[Visual Basic Express........]