Question

我正在遍历行，并使用不同的函数查找每行（名称）的第一列以查找其标记。

对于每个“名称”，在不同的表（“标记”）中有一个特定的条目，也可以是空白或“ - ”

Sub main()
On error goto errorhandler
Dim name as string
Dim marks as double
Dim source as range
Dim runs as integer

runs = 1
Set source = Sheets("input").Range("$A$2")
i=1

Do until source.offset(i,0) = ""        'iterate through rows 

    name = source.offset(i,0)
    marks = find(name)

    do until runs * marks > 100
        runs = runs + 1 'since marks is not defined;runs overflows 
    Loop
    'a lot of code which relies on marks
errorhandler:
    i = i + 1
Loop

End Sub

Function find(name as string) as double
    find = application.vlookup(name,Sheets("values").Range("$A$2,$C$5"),2,0)
End function

现在正如我所说，该表第2列中的值也可以为空或“ - ”，从而导致错误运行时错误13“类型不匹配”

我甚至尝试在循环内部放置错误语句 VBA通常应该在调用函数中搜索错误处理，即“main”，但它没有这样做

Answer 1

已经过测试

Sub main()
    On Error GoTo errorhandler

    Dim name As String
    Dim marks As Double
    Dim source As Range

    Set source = Sheets("input").Range("$A$2")
    i = 1

    Do Until source.Offset(i, 0) = ""       'iterate through rows
        name = source.Offset(i, 0)
        marks = find(name)
        Debug.Print marks
        i = i + 1
    Loop

    Exit Sub
errorhandler:
    MsgBox Err.Description
End Sub

Function find(name As String) As Double
    find = Application.WorksheetFunction.VLookup(name, Sheets("values").Range("$A$2:$C$5"), 2, False)
End Function

编辑：Kartik，对不起，我没有看到你已经接受了答案。

<强>后续

实际上我不想打印任何错误信息而是直接跳到下一次迭代 - Kartik Anand 14秒前

在这种情况下，您在错误的部分处理错误;）

试试这个

Sub main()
    Dim name As String
    Dim marks As Double
    Dim source As Range

    Set source = Sheets("input").Range("$A$2")
    i = 1

    Do Until source.Offset(i, 0) = ""       'iterate through rows
        name = source.Offset(i, 0)
        marks = find(name)
        Debug.Print marks
        i = i + 1
    Loop
End Sub

Function find(name As String) As Double
    On Error GoTo earlyexit

    find = Application.WorksheetFunction.VLookup(name, Sheets("values").Range("$A$2:$C$5"), 2, False)

    Exit Function
earlyexit:
    find = 0
End Function

Answer 2

在Err.Clear

之后添加errorhandler:

另请参阅Err.Clear上的Excel帮助，其中推荐On Error Resume Next
与If Err.Number <> 0 Then

一起

这将产生更清晰的代码

像

这样的东西

Sub main()
    On Error Resume Next
    Dim name As String
    Dim marks As Double
    Dim source As Range

    Set source = Sheets("input").Range("$A$2")
    i = 1

    Do Until source.Offset(i, 0) = ""       'iterate through rows
        name = source.Offset(i, 0)
        marks = Find(name)
        If Err.Number <> 0 Then
            Err.Clear
        Else
            ' Your other code for non-error case here

        End If
        i = i + 1
    Loop
End Sub

调用函数时，VBA错误处理不起作用会生成错误

2 个答案: