我有一段代码，从文件的一列中抓取数据，并将其放入一个数组中。
现在，我想通过这个数组删除重复的数据，但我不能让它通过......有什么办法吗？
这是代码，数组在最后。
Dim i As Long
Dim searchItem As Variant
strSearch = ""
searchItem = ""
strFile = "...\Desktop\xl files min\src.xlsm"
Set s_wbk = Workbooks.Open(strFile)
With s_wbk.Worksheets("Sheet1")
For i = 1 To Rows.Count
If Not IsEmpty(Cells(i, 1).Value) Then
strSearch = strSearch & "," & Cells(i, 1).Value
End If
Next i
End With
s_wbk.Close
searchItem = Split(strSearch, ",") '*NEED TO REMOVE DUPLICATES
在字符串构建过程中，通过测试之前存在的重复数据，用 InStr函数.
If Not IsEmpty(Cells(i, 1).Value) And _
Not InStr(1, strSearch, Cells(i, 1).Value & ",", vbTextCompare) Then
strSearch = strSearch & "," & Cells(i, 1).Value
End If
在分割之前，你还应该去掉最后一个尾部的逗号。
Next i
strSearch = Left(strSearch, Len(strSearch) - 1)
最后，如果你把这些值添加到一个Scripting.Dictionary对象中(它有自己唯一的主键索引)，你就会在一个已经为你建立的数组中拥有一组唯一的键。
这对我来说是可行的。
Function removeDuplicates(ByVal myArray As Variant) As Variant
Dim d As Object
Dim v As Variant 'Value for function
Dim outputArray() As Variant
Dim i As Integer
Set d = CreateObject("Scripting.Dictionary")
For i = LBound(myArray) To UBound(myArray)
d(myArray(i)) = 1
Next i
i = 0
For Each v In d.Keys()
ReDim Preserve outputArray(0 To i)
outputArray(i) = v
i = i + 1
Next v
removeDuplicates = outputArray
End Function
希望对你有帮助
最简单的方法是复制你输入的工作表，并使用内置的功能来删除重复的内容，看看这个。
Dim i As Long
Dim searchItem As Variant
Dim Ws As Worksheet
strSearch = ""
searchItem = ""
strFile = "...\Desktop\xl files min\src.xlsm"
Set s_wbk = Workbooks.Open(strFile)
'Copy the sheet
s_wbk.Sheets("Sheet1").Copy (s_wbk.Sheets(1))
Set Ws = s_wbk.Sheets(1)
With Ws
'Remove duplicates from column A
With .Range("A:A")
.Value = .Value
.RemoveDuplicates _
Columns:=Array(1), _
Header:=xlNo
End With
For i = 1 To .Range("A" & .Rows.count).End(xlUp).Row
If Not IsEmpty(.Cells(i, 1)) Then
strSearch = strSearch & "," & .Cells(i, 1).Value
End If
Next i
'Get rid of that new sheet
Application.DisplayAlerts = False
.Delete
Application.DisplayAlerts = False
End With
s_wbk.Close
searchItem = Split(strSearch, ",") 'NO MORE DUPLICATES ;)
或者 更快 (因为你不会有空单元格在 RemoveDuplicates) :
Dim i As Long
Dim searchItem As Variant
Dim Ws As Worksheet
strSearch = ""
searchItem = ""
strFile = "...\Desktop\xl files min\src.xlsm"
Set s_wbk = Workbooks.Open(strFile)
'Copy the sheet
s_wbk.Sheets("Sheet1").Copy (s_wbk.Sheets(1))
Set Ws = s_wbk.Sheets(1)
With Ws
'Remove duplicates from column A
With .Range("A:A")
.Value = .Value
.RemoveDuplicates _
Columns:=Array(1), _
Header:=xlNo
End With
'NO MORE DUPLICATES and FASTER ARRAY FILL ;)
searchItem = .Range(.Range("A1"), .Range("A" & .Rows.count).End(xlUp)).Value
'Get rid of that new sheet
Application.DisplayAlerts = False
.Delete
Application.DisplayAlerts = False
End With
s_wbk.Close
通常我使用字典对象来检查重复，或者使用它本身。字典是一个将唯一的键引用到值的对象。因为键必须是唯一的，所以它在收集唯一的值时是很有用的。也许这不是最有效的内存方式，而且可能会对对象造成一定的影响，但它的工作原理很好。你必须调暗一个对象，并将其设置为一个字典，收集数据，在检查它是否已经存在后，然后通过字典循环收集值。
Dim i As Long
Dim searchItem As Variant, var as variant
dim dicUniques as object
set dicUniques = CreateObject("Scripting.Dictionary")
strSearch = ""
searchItem = ""
strFile = "...\Desktop\xl files min\src.xlsm"
Set s_wbk = Workbooks.Open(strFile)
With s_wbk.Worksheets("Sheet1")
For i = 1 To Rows.Count
If Not IsEmpty(Cells(i, 1).Value) Then
if dicUniques.exists(cells(i,1).value) = false then
dicUniques.add cells(i,1).value, cells(i,1).value
end if
End If
Next i
End With
s_wbk.Close
for each var in dicUniques.keys
strSearch = strSearch & ", " & var
next var
searchItem = Split(strSearch, ",")
这就是快速和肮脏的解决方案。由于键是唯一的，你可能可以自己使用它们，而不需要先把它们放在一起的字符串中。顺便说一下。首先，你应该指定你使用的单元格。有时，你在另一个工作表中启动宏，然后它将使用那里的单元格，如果没有为单元格对象提供父工作表的话。其次，重要的是要指定你要为字典使用单元格的值，因为一个字典对象可以包含任何内容。所以如果你不使用 cells(x,y).value，对象将包含单元格本身。
编辑：纠正了例程中的排版错误。
Option Explicit
Sub removeDuplicates()
Const strFile = "...\Desktop\xl files min\src.xlsm"
Const SheetName As String = "Sheet1"
Const SourceColumn As Variant = 1 ' e.g. 1 or "A"
Const FirstRow As Long = 2
Dim s_wbk As Workbook
Dim SourceArray, WorkArray, searchItem
Set s_wbk = Workbooks.Open(strFile)
SourceArray = copyColumnToArray(s_wbk.Worksheets(SheetName), _
FirstRow, SourceColumn)
s_wbk.Close
If Not IsArray(SourceArray) Then Exit Sub
WorkArray = Application.Transpose(SourceArray) ' only up to 65536 elements.
searchItem = getUniqueArray(WorkArray)
End Sub
Function copyColumnToArray(SourceSheet As Worksheet, _
FirstRowNumber As Long, ColumnNumberLetter As Variant) As Variant
Dim rng As Range
Dim LastRowNumber As Long
Set rng = SourceSheet.Columns(ColumnNumberLetter).Find(What:="*", _
LookIn:=xlFormulas, Searchdirection:=xlPrevious)
If rng Is Nothing Then Exit Function
Set rng = SourceSheet.Range(SourceSheet _
.Cells(FirstRowNumber, ColumnNumberLetter), rng)
If Not rng Is Nothing Then copyColumnToArray = rng
End Function
Function getUniqueArray(SourceArray As Variant, _
Optional Transpose65536 As Boolean = False) As Variant
' Either Late Binding ...
Dim dict As Object: Set dict = CreateObject("Scripting.Dictionary")
' ... or Early Binding:
' VBE > Tools > References > Microsoft Scripting Runtime
'Dim dict As Scripting.Dictionary: Set dict = New Scripting.Dictionary
Dim i As Long
For i = LBound(SourceArray) To UBound(SourceArray)
If SourceArray(i) <> Empty Then
dict(SourceArray(i)) = Empty
End If
Next i
' Normal: Horizontal (Row)
If Not Transpose65536 Then getUniqueArray = dict.Keys: GoTo exitProcedure
' Transposed: Vertical (Column)
If dict.Count <= 65536 Then _
getUniqueArray = Application.Transpose(dict.Keys): GoTo exitProcedure
' Transpose only supports up to 65536 items (elements).
MsgBox "Source Array contains '" & dict.Count & "' unique values." _
& "Transpose only supports up to 65536 items (elements).", vbCritical, _
"Custom Error Message: Too Many Elements"
exitProcedure:
End Function