VB.NET Language in a Nutshell

Syntax

Exit Do Exit For Exit Function Exit Property Exit Select Exit Sub Exit Try Exit While

Description

Prematurely exits a block of code

Rules at a Glance

Exit Do

Exits a Do...Loop statement. If the current Do...Loop is within a nested Do...Loop , execution continues with the next Loop statement wrapped around the current one. If, however, the Do...Loop is standalone, program execution continues with the first line of code after the Loop statement.

Exit For

Exits a For...Next loop or a For Each...Next statement. If the current For...Next is within a nested For...Next loop, execution continues with the next Next statement wrapped around the current one. If, however, the For...Next loop is standalone, program execution continues with the first line of code after the Next statement.

Exit Function

Exits the current function. Program execution is passed to the line following the call to the function.

Exit Property

Exits the current property procedure. Program execution is passed to the line following the call to the property.

Exit Select

Immediately exits a Select Case construct. Execution continues with the statement immediately following the End Select statement.

Exit Sub

Exits the current sub procedure. Program execution is passed to the line following the call to the procedure.

Exit Try

Immediately exits a Try...Catch block. Program execution proceeds with the Finally block, if it is present, or with the statement following the End Try statement.

Exit While

Immediately exits a While loop. Program execution proceeds with the code following the End While statement. If Exit While is within a nested While loop, it terminates the loop at the level of nesting in which Exit While occurs.

Programming Tips and Gotchas

Using Exit Sub can save having to wrap lengthy code within an If...Then statement. Here is an example with Exit Sub :

Sub MyTestSub(iNumber As Integer) If iNumber = 10 Then Exit Sub End If . . .'code End Sub

and without Exit Sub :

Sub MyTestSub(iNumber As Integer) If iNumber <> 10 Then . . . 'code End If End Sub

See Also

End... Statement