我创建了以下函数来查找文件并在未找到文件时给出错误：
Public Function checkFileExistence(arrFileNames() As String, Optional bShowErrMsg As Boolean = False) As Boolean
' This function looks for every file name in arrFileNames and returns True if all exist else False
' Optional: bShowErrMsg = True will tell the user which file was missing with a MsgBox
Dim file As Variant
For Each file In arrFileNames
If Len(Dir(file, vbNormal)) = 0 Then
checkFileExistence = False
If bShowErrMsg = True Then MsgBox (file & " was not found.")
Exit Function
End If
Next file
checkFileExistence = True
End Function
当我去调用它时，我会遇到类型不匹配的错误。在预定义的数组中以及在尝试使用Array（）函数时，都会发生这种情况：
.
Dim filesToFind(1 To 3) As String
filesToFind(1) = "image.png"
filesToFind(2) = "test.png"
filesToFind(3) = "test.fred"
Debug.Print checkFileExistence(filesToFind, True)
Debug.Print checkFileExistence(Array("image.png", "test.png", "test.fred"), True)
如果arrFileNames（）是Variant，也会发生这种情况。我究竟做错了什么？
Array不返回类型化数组（例如String()）。
更改您的签名以Variant改为：
Public Function checkFileExistence(arrFileNames As Variant, Optional bShowErrMsg As Boolean = False) As Boolean
而且，您始终可以使用以下IsArray函数验证您在查看实际数组：
If Not IsArray(arrFileNames) Then Err.Raise 5, "CheckFileExistence", "Expected array, but received a " & TypeName(arrFileNames) & "."
另外，我也热烈建议将您的循环更改为For...Next循环。数组不想被迭代For Each-请参阅本文。
For i = LBound(arrFileNames) To UBound(arrFileNames)
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