Using Regex method Replace:First 3 digits replaced

    
Imports System.Text.RegularExpressions
Imports System

Public Class MainClass

   Shared Sub Main()
      Dim testString1 As String = "This sentence ends in 5 stars *****"

      Dim testString2 As String = "1, 2, 3, 4, 5, 6, 7, 8"
      Dim testRegex1 As Regex = New Regex("stars")
      Dim testRegex2 As Regex = New Regex("\d")
      
      Console.WriteLine("Original String 2" & _
         vbTab & vbTab & vbTab & testString2)

      Console.WriteLine("First 3 digits replaced by " & _
         """digit""" & vbTab & _
         testRegex2.Replace(testString2, "digit", 3))
  End Sub ' Main

End Class

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Using Regex method Replace:First 3 digits replaced : Regular Expressions « Development « VB.Net

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