VB.Net Tutorial/Statements/Exit

Do Loop with Exit Do

Option Strict On
 Imports System
 Module Module1
    Sub Main( )
       Dim counterVariable As Integer = 0
       Do
          Console.WriteLine("counterVariable: {0}", counterVariable)
          counterVariable = counterVariable + 1
          If counterVariable > 9 Then
             Exit Do
          End If
       Loop
    End Sub "Main
 End Module

counterVariable: 0
counterVariable: 1
counterVariable: 2
counterVariable: 3
counterVariable: 4
counterVariable: 5
counterVariable: 6
counterVariable: 7
counterVariable: 8
counterVariable: 9

Exit For

public class Test
   public Shared Sub Main
        Dim j As Integer
        For i As Integer = 1 To 3
            j = 0
            Do While j < 3
                j += 1
                For k As Integer = 1 To 3
                    Dim test1 As Boolean = k = 2
                    If test1 Then Exit For " Exits the For K loop.
                    Dim test2 As Boolean = i = j
                    If test2 Then Exit Do " Exits the Do.
                    Console.WriteLine(i & ", " & j & ", " & k)
                Next k
            Loop
        Next i
   End Sub
End class

2, 1, 1
3, 1, 1
3, 2, 1

Using the Exit keyword in repetition structures

Module Tester
   Sub Main()
      Dim output As String
      Dim counter As Integer
      For counter = 1 To 10
         If counter = 3 Then
            Exit For
         End If
      Next
      output = "counter = " & counter & _
         " after exiting For/Next structure" & vbCrLf
      Do Until counter > 10
         If counter = 5 Then
            Exit Do
         End If
         counter += 1
      Loop
      output &= "counter = " & counter & _
         " after exiting Do Until/Loop structure" & vbCrLf
      While counter <= 10
         If counter = 7 Then
            Exit While
         End If
         counter += 1
      End While
      output &= "counter = " & counter & _
         " after exiting While structure"
      Console.WriteLine(output)
   End Sub 
End Module

counter = 3 after exiting For/Next structure
counter = 5 after exiting Do Until/Loop structure
counter = 7 after exiting While structure