On Error GoTo ... Resume 语句

发生错误时启用错误处理例程或恢复程序执行。

语法:

On Error Statement diagram


On [Local] Error {GoTo Labelname | GoTo 0 | Resume Next}

参数:

「GoTo Labelname」: 当发生错误时，在行 "Labelname" 的开始部分启用错误处理例程。

「Resume Next」: 发生错误时，程序继续执行出错语句后面的语句。

「GoTo 0」: 在当前过程中禁用错误处理程序。

Local: Optional. The keyword is a reminder the statement is local to the routine which invokes it; when the routine exits, this error handling is canceled automatically.

示例:


Sub ExampleReset
On Error GoTo ErrorHandler
    Dim iNumber As Integer
    Dim iCount As Integer
    Dim sLine As String
    Dim aFile As String
    aFile = "C:\Users\ThisUser\data.txt"
    iNumber = Freefile
    Open aFile For Output As #iNumber
    Print #iNumber, "This is a line of text"
    Close #iNumber
    iNumber = Freefile
    Open aFile For Input As iNumber
    For iCount = 1 To 5
        Line Input #iNumber, sLine
        If sLine <>"" Then
            Rem
        End If
    Next iCount
    Close #iNumber
    Exit Sub
ErrorHandler:
    Reset
    MsgBox "All files will be closed",  0,  "Error"
End Sub

Error-Handling Functions

Open Statement