VB中对string的操作

其中fromDirectoryName是源文件目录名，toDirectoryName是目的目录名

Dim filePath1 As String = fromDirectoryName + "\" + myFile
Dim filePath2 As String = toDirectoryName + "\" + myFile
File.Move(filePath1, filePath2)


Dim filePath1 As String = fromDirectoryName & "\" & myFile
Dim filePath2 As String = toDirectoryName & "\" & myFile
File.Move(filePath1, filePath2)


都报错”无法识别的路径“

在VB中对string ”+“运算符起什么作用？和”&“一样？
为什么我路径不对那

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对于字符串来说+和&运算符是一样的，你调试的时候看一下filePath1和filePath2是否正确。

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Dim fromDirectoryName As String = "d:"
Dim toDirectoryName As String = "e:"
Dim myfile As String = "Test.xls"
Dim filePath1 As String = fromDirectoryName + "\" + myFile
Dim filePath2 As String = toDirectoryName + "\" + myfile
File.Move(filePath1, filePath2)

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出来错误了：
            For Each myFile As String In fileArray
                ' remove directory path from file name
                fileName = myFile.Substring(myFile.LastIndexOf(".") + 1)