在线论坛中的一个常见请求是用于识别表单中未锁定单元格的代码。
标准解决方案使用循环迭代活动工作表的已使用部分中的每个单元格，测试每个单元格确定它是否被锁定。下面列出了这种方法的code sample。
鉴于在循环细胞范围内固有的差的性能，可能有哪些优越的方法？
（注意：我确实打算添加我自己现有的方法，以前作为潜在的方法托管在另一个论坛上 - 但如果提供的话，我会接受另一个[合适的]方法作为答案）
范围识别未锁定细胞的方法
Sub SelectUnlockedCells()
`http://www.extendoffice.com/documents/excel/1053-excel-identify-select-locked-cells.html
Dim WorkRange As Range
Dim FoundCells As Range
Dim Cell As Range
On Error GoTo SelectUnlockedCells_Error
Set WorkRange = ActiveSheet.UsedRange
For Each Cell In WorkRange
If Cell.Locked = False Then
If FoundCells Is Nothing Then
Set FoundCells = Cell
Else
Set FoundCells = Union(FoundCells, Cell)
End If
End If
Next Cell
If FoundCells Is Nothing Then
MsgBox "All cells are locked."
Else
FoundCells.Select
End If
On Error GoTo 0
Exit Sub
SelectUnlockedCells_Error:
MsgBox "Error " & Err.Number & " (" & Err.Description & ") in procedure
SelectUnlockedCells of Module Module1"
End Sub
好吧，我已经回到循环，但我认为这种方法是有效的，因为它只使用下一个引用那些是Unlocked（没有选择）的单元格：
如果对象是范围，则此属性将模拟TAB键，但该属性将返回下一个单元格而不选择它。
在受保护的工作表上，此属性返回下一个未锁定的单元格。在未受保护的工作表上，此属性始终将单元格立即返回到指定单元格的右侧。
它存储第一个（下一个）Range.Address，循环通过其他，直到它返回到第一个。
Sub GetUnlockedCells_Next()
Dim ws As Worksheet
Dim strFirst As String
Dim rngNext As Range
Dim strLocked As String
Set ws = Worksheets(1)
ws.Protect
Set rngNext = ws.Range("A1").Next
strFirst = rngNext.Address
Do
strLocked = strLocked & rngNext.Address & ","
Set rngNext = rngNext.Next
Loop Until rngNext.Address = strFirst
strLocked = Left(strLocked, Len(strLocked) - 1) 'remove the spare comma
ws.Range(strLocked).Select
ws.Unprotect
MsgBox strLocked
End Sub
使用SpecialCells快速识别未锁定的细胞
下面的代码 - QuickUnlocked - 使用变通方法快速生成SpecialCells错误单元集合，以识别未锁定的单元格范围。
关键代码步骤是：
Application以抑制错误，代码和屏幕更新ActiveWorkbook和/或ActiveSheet。如果不成功则退出代码SpecialCells删除副本中的任何现有公式错误警告SpecialCells仅限于Xl2010之前的8192个区域
根据this Microsoft KB article，Excel-2007和更早版本通过VBA宏支持最多8,192个非连续单元。相当令人惊讶的是，将VBA宏应用于超过8192个SpecialCells Areas in these Excel versions, will not raise an error message, and the entire area under consideration will be treated as being part of theSpecialCells`范围集合。
快速解锁代码
Sub QuickUnlocked()
Dim ws1 As Worksheet
Dim ws2 As Worksheet
Dim rng1 As Range
Dim rng2 As Range
Dim rng3 As Range
Dim lCalc As Long
Dim bWorkbookProtected As Boolean
On Error Resume Next
'test to see if WorkBook structure is protected
'if so try to unlock it
If ActiveWorkbook.ProtectStructure Then
ActiveWorkbook.Unprotect
If ActiveWorkbook.ProtectStructure Then
MsgBox "Sorry, I could not remove the passsword protection from the workbook" _
& vbNewLine & "Please remove it before running the code again", vbCritical
Exit Sub
Else
bWorkbookProtected = True
End If
End If
Set ws1 = ActiveSheet
'test to see if current sheet is protected
'if so try to unlock it
If ws1.ProtectContents Then
ws1.Unprotect
If ws1.ProtectContents Then
MsgBox "Sorry, I could not remove the passsword protection from sheet" & vbNewLine & ws1.Name _
& vbNewLine & "Please remove it before running the code again", vbCritical
Exit Sub
End If
End If
On Error GoTo 0
'disable screenupdating, event code and warning messages.
'set calculation to manual
With Application
.ScreenUpdating = False
.EnableEvents = False
.DisplayAlerts = False
lCalc = .Calculation
.Calculation = xlCalculationManual
End With
On Error Resume Next
'check for existing error cells
Set rng1 = ws1.Cells.SpecialCells(xlCellTypeFormulas, 16)
On Error GoTo 0
'copy the activesheet to a new working sheet
ws1.Copy After:=Sheets(Sheets.Count)
Set ws2 = ActiveSheet
'delete any cells that already contain errors
If Not rng1 Is Nothing Then ws2.Range(rng1.Address).ClearContents
'protect the new sheet
ws2.Protect
'add an error formula to all unlocked cells in the used range
'then use SpecialCells to read the unlocked range address
On Error Resume Next
ws2.UsedRange.Formula = "=NA()"
ws2.Unprotect
Set rng2 = ws2.Cells.SpecialCells(xlCellTypeFormulas, 16)
Set rng3 = ws1.Range(rng2.Address)
ws2.Delete
On Error GoTo 0
'if WorkBook level protection was removed then reinstall it
If bWorkbookProtected Then ActiveWorkbook.Protect
'cleanup user interface and settings
With Application
.ScreenUpdating = True
.EnableEvents = True
.DisplayAlerts = True
lCalc = .Calculation
End With
'inform the user of the unlocked cell range
If Not rng3 Is Nothing Then
MsgBox "The unlocked cell range in Sheet " & vbNewLine & ws1.Name & " is " & vbNewLine & rng3.Address(0, 0)
Else
MsgBox "No unlocked cells exist in " & ws1.Name
End If
End Sub
使用条件格式： - 使用公式确定要格式化的单元格，格式化此公式为真的值：=CELL("protect",A1)=0和应用于占用范围的选择格式？
我正在寻找一种清除未锁定细胞内容的方法。问题是我的表单有数百个（如果不是数千个）未锁定的单元格和两倍的锁定单元格。迭代它们需要大约5-7秒，我想要更高效的东西。
brettdj的解决方案让我走了一半，但在我的范围内有这么多单元格打破了算法。
这条线
Set rng3 = ws1.Range(rng2.Address)
因为rng2的地址超过了256个字符的限制所以没有工作，所以rng3变得“没有”。
我花了几个小时试图解决256限制但无处可去。几乎放弃后，我偶然发现了一个范围的“区域”对象。生命保护！
下面调整后的代码适用于具有多个未锁定单元格的工作表。感谢brettdj最初的想法。
' Sub to clear unlocked cells.
Sub clearUnlockedCells()
On Error Resume Next
' If the Workbook is protected, unlock it.
Dim workbook_protected As Boolean
If ActiveWorkbook.ProtectStructure Then
workbook_protected = True
ActiveWorkbook.Unprotect
' If we failed to unlock the Workbook, error out and exit.
If ActiveWorkbook.ProtectStructure Then
MsgBox "Sorry, I could not remove the passsword protection from the workbook" _
& vbNewLine & "Please remove it before running the code again", vbCritical
Exit Sub
End If
End If
Dim source_sheet As Worksheet
Set source_sheet = ActiveSheet
' If the Worksheet is protected, unlock it.
Dim worksheet_protected As Boolean
If source_sheet.ProtectContents Then
worksheet_protected = True
source_sheet.Unprotect
' If we failed to unlock the Worksheet, error out and exit.
If source_sheet.ProtectContents Then
MsgBox "Sorry, I could not remove the passsword protection from sheet" & vbNewLine & source_sheet.name _
& vbNewLine & "Please remove it before running the code again", vbCritical
Exit Sub
End If
End If
On Error GoTo 0
' Disable screenupdating, event code and warning messages.
' Store the calculation and set it to manual.
Dim calc As Long
With Application
.ScreenUpdating = False
.EnableEvents = False
.DisplayAlerts = False
calc = .Calculation
.Calculation = xlCalculationManual
End With
On Error Resume Next
' Check for existing error cells.
Dim tmp_rng As Range
Set tmp_rng = source_sheet.Cells.SpecialCells(xlCellTypeFormulas, 16)
On Error GoTo 0
' Copy the ActiveSheet to a new working sheet.
source_sheet.Copy After:=Sheets(Sheets.Count)
Dim tmp_sheet As Worksheet
Set tmp_sheet = ActiveSheet
' Delete any cells that already contain errors.
If Not tmp_rng Is Nothing Then tmp_sheet.Range(tmp_rng.Address).ClearContents
' Protect the new sheet and add an error formula to all unlocked cells in the
' used range, then use SpecialCells to read the unlocked range address.
tmp_sheet.Protect
On Error Resume Next
tmp_sheet.UsedRange.Formula = "=NA()"
tmp_sheet.Unprotect
' Get the range of cells with "=NA()" in them.
Set tmp_rng = tmp_sheet.Cells.SpecialCells(xlCellTypeFormulas, 16)
' Iterate through the range and create a mirror of that range in the source sheet.
Dim area As Range
Dim source_sheet_range As Range
Dim unlocked_cells As Range
For Each area In tmp_rng.Areas
Set source_sheet_range = source_sheet.Range(area.Address)
If unlocked_cells Is Nothing Then
Set unlocked_cells = source_sheet_range
Else
Set unlocked_cells = Union(unlocked_cells, source_sheet_range)
End If
Next area
' Delete the temp sheet.
tmp_sheet.Delete
On Error GoTo 0
' Protect the Workbook and Worksheet as necessary.
If workbook_protected Then ActiveWorkbook.Protect
If worksheet_protected Then source_sheet.Protect
' Cleanup user interface and settings.
With Application
.ScreenUpdating = True
.EnableEvents = True
.DisplayAlerts = True
.Calculation = calc
End With
' Clean up the unlocked cells.
unlocked_cells.ClearContents
End Sub
希望能帮助别人。如果您只想选择它们而不是清除它们，那么将.ClearContents中的第二行更改为.Select。
我正在探索这个问题，但是我或多或少地全面了解了布雷特的做法。稍有不同的是我使用当前的工作表而不是创建一个新工作表。我最初也假设工作表中没有错误。 （可以添加类似于Brett的代码来解释这些问题。）
我想用“#N / A”淹没UsedRange，忽略错误，并使用Application.Undo快速回来。不幸的是，我无法使用Undo（与Word不同）。所以我使用Variant来获取整个区域的数据，然后重新插入它。
Sub GetUnlockedCells()
Dim ws As Worksheet
Dim rngUsed As Range
Dim varKeep As Variant
Application.ScreenUpdating = False
Set ws = Worksheets(1)
ws.Protect
Set rngUsed = ws.UsedRange
varKeep = rngUsed.Value
On Error Resume Next
rngUsed.Value = "#N/A"
On Error GoTo 0
ws.Unprotect
MsgBox "Unlocked cells are " & _
rngUsed.SpecialCells(xlCellTypeConstants, xlErrors).Address
rngUsed.Value = varKeep
Application.ScreenUpdating = True
End Sub
所以，不幸的是，除了Brett很酷的代码之外，我还没有进步。也许它会激励别人，或者有人可能会发现使用撤销的方法;）
我也失去了公式（转换为价值观）所以需要一些工作！
如果有很多公式，一般的方法是
For each row in ...
lockedR = row.locked
for each cell in row
if isnull(lockedR) then ' inconsistent in row
locked = cell.locked
else
locked = lockedR ' consistent from row, no need to get it.
此模式适用于许多属性，如HasArray。但是对于Locked而言，它的速度要慢得多（100倍）。不知道为什么这么低效。
Goto Special将是一个可爱的技巧，但没有一个锁定细胞。
一个好的解决方案会很精彩，但我怀疑是不可能的。