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有问题,先查帮助
Exits a block of Do...Loop, For...Next, Function, or Sub code.
Exit Do
Exit For
Exit Function
Exit Property
Exit Sub
The Exit statement syntax has these forms:
Statement Description
Exit Do Provides a way to exit a Do...Loop statement. It can be used only inside a Do...Loop statement. Exit Do transfers control to the statement following the Loop statement. When used within nested Do...Loop statements, Exit Do transfers control to the loop that is one nested level above the loop where it occurs.
Exit For Provides a way to exit a For loop. It can be used only in a For...Next or For Each...Next loop. Exit For transfers control to the statement following the Next statement. When used within nested For loops, Exit For transfers control to the loop that is one nested level above the loop where it occurs.
Exit Function Immediately exits the Function procedure in which it appears. Execution continues with the statement following the statement that called the Function.
Exit Property Immediately exits the Property procedure in which it appears. Execution continues with the statement following the statement that called the Property procedure.
Exit Sub Immediately exits the Sub procedure in which it appears. Execution continues with the statement following the statement that called the Sub.
The following example illustrates the use of the Exit statement:
Sub RandomLoop
Dim I, MyNum
Do ' Set up infinite loop.
For I = 1 To 1000 ' Loop 1000 times.
MyNum = Int(Rnd * 100) ' Generate random numbers.
Select Case MyNum ' Evaluate random number.
Case 17: MsgBox "Case 17"
Exit For ' If 17, exit For...Next.
Case 29: MsgBox "Case 29"
Exit Do ' If 29, exit Do...Loop.
Case 54: MsgBox "Case 54"
Exit Sub ' If 54, exit Sub procedure.
End Select
Next
Loop
End Sub
根据帮助中的例子,把你的while语句改为do loop,再使用Exit Do就可以了 |
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