excel如何使用VBA实现下拉列表模糊搜索

实现下拉列表模糊搜索的方法如下：

1. 首先，在Excel中创建一个下拉列表。

2. 在VBA中创建一个函数，该函数将返回一个字符串类型的数组，该数组包含与用户输入的搜索字符串匹配的所有下拉列表项。

3. 在下拉列表的输入单元格上使用数据验证功能，并为此单元格指定数据验证列表，该列表使用VBA函数返回的数组。

4. 当用户在输入单元格中输入字符时，应该自动更新下拉列表，以显示与输入字符串匹配的所有项。

以下是一个示例代码，可以实现上述功能：

Option Explicit

Function FilterData(sht As Worksheet, searchStr As String, _
                    filterRange As Range) As String()

    Dim arrData() As String
    Dim i As Long, j As Long, k As Long
    Dim matchFound As Boolean

    'Initialize the array
    ReDim arrData(1 To filterRange.Rows.Count)

    'Loop through each cell in the filter range
    For i = 1 To filterRange.Rows.Count
        matchFound = False
        'Check if the current cell contains the search string
        If InStr(1, filterRange.Cells(i, 1).Value, searchStr, vbTextCompare) > 0 Then
            matchFound = True
        End If
        'If a match is found, add it to the array
        If matchFound Then
            k = k + 1
            arrData(k) = filterRange.Cells(i, 1).Value
        End If
    Next i

    'Resize the array to remove any empty elements
    If k > 0 Then
        ReDim Preserve arrData(1 To k)
    Else
        ReDim arrData(1 To 1)
        arrData(1) = ""
    End If

    'Sort the array
    Call QuickSort(arrData, LBound(arrData), UBound(arrData))

    'Return the filtered data
    FilterData = arrData

End Function

Sub UpdateDataValidation()

    Dim sht As Worksheet
    Dim searchStr As String
    Dim filterRange As Range
    Dim arrData() As String
    Dim i As Long

    'Get the active sheet
    Set sht = ActiveSheet

    'Get the search string from the input cell
    searchStr = sht.Range("A1").Value

    'Get the filter range
    Set filterRange = sht.Range("B1:B10")

    'Filter the data based on the search string
    arrData = FilterData(sht, searchStr, filterRange)

    'Clear the existing data validation
    With sht.Range("A2").Validation
        .Delete
    End With

    'Add the new data validation
    With sht.Range("A2").Validation
        .Add Type:=xlValidateList, AlertStyle:=xlValidAlertStop, _
             Formula1:=Join(arrData, ",")
    End With

End Sub

Sub QuickSort(arr() As String, left As Long, right As Long)

    Dim i As Long
    Dim j As Long
    Dim temp As String
    Dim pivot As String

    i = left
    j = right
    pivot = arr((left + right) \ 2)

    While i <= j
        While arr(i) < pivot And i < right
            i = i + 1
        Wend
        While pivot < arr(j) And j > left
            j = j - 1
        Wend
        If i <= j Then
            temp = arr(i)
            arr(i) = arr(j)
            arr(j) = temp
            i = i + 1
            j = j - 1
        End If
    Wend

    If left < j Then Call QuickSort(arr, left, j)
    If i < right Then Call QuickSort(arr, i, right)

End Sub

这个示例代码将会在当前工作表中，使用单元格 A1 作为搜索字符串的输入单元格，使用单元格 A2 作为下拉列表的输入单元格，使用单元格 B1:B10 作为下拉列表的数据源。您可以根据需要修改这些参数。