Microsoft Visual Basic 运行时错误 91

Question

当它到达 Cells.Find 时会出现运行时错误“91” “对象变量或未设置块变量”。

Sub find_highlight()

w = "12:00:00 AM"

Cells.Find(What:=(w), After:=ActiveCell, LookIn:=xlFormulas, _
LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:=xlNext, _
MatchCase:=False).Activate
 Range("B:B").Select
With Selection.Interior
    .ColorIndex = 6
    .Pattern = xlSolid
    .PatternColorIndex = xlAutomatic
  End With
End Sub

Answer 1

1. 始终在您的模块中使用Option Explicit 并声明所有变量类型
2. 始终使用变量限定对象
3. 直接处理对象（避免使用.Select 或.Activate）
4. Find 调用中的语法已关闭。无需将变量w 括在括号中。

（1 到 3 是 最佳 做法，但不是必需的。漏掉一些东西可能会产生意想不到的结果）。

Option Explicit

Sub find_highlight()

Dim ws As Worksheet
Set ws = Sheets("Sheet4") 'change as needed

Dim w As String 'maybe Date?
w = "12:00:00 AM"

Dim rng As Range, sFA  As String, rngFull As Range

Set rng = ws.Cells.Find(What:=w, After:=ActiveCell, LookIn:=xlFormulas, _
           LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:=xlNext, _
           MatchCase:=False)

sFA = rng.Address

Do 'load all cells where w exists into range

    If Not rng Is Nothing And rngFull Is Nothing Then
        Set rngFull = rng
    ElseIf Not rng Is Nothing Then
        Set rngFull = Union(rng, rngFull)
    End If

    Set rng = ws.Cells.FindNext(rng)

Loop Until rng Is Nothing Or rng.Address = sFA

'highlight all cells found
With rngFull.Interior
    .ColorIndex = 6
    .Pattern = xlSolid
    .PatternColorIndex = xlAutomatic
End With

rngFull.NumberFormat = "mm/dd/yyyy" 'format as date -> change as needed


End Sub