如果该文件夹不存在，如何通过创建文件夹将文件从一个目录复制到另一个目录

Question

如果目标目录中不存在该文件夹，则通过创建文件夹将文件从一个目录复制到另一个目录时出现问题。

例：

• 源路径： C:\\temp\\test\\1.txt
• 目标路径： C:\\Data\\

如果C:\\Data\\不包含“temp”或“test”文件夹，则应在复制1.txt之前创建该文件夹。

复制到C:\\Data\\temp\\test\\1.txt

以下是我的代码。 但它不起作用..

Private Sub btnBackup_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBackup.Click
          Dim sourcepath As String = "C:\temp\test\1.txt"
    Dim DestPath As String = "C:\Data\"
    CopyDirectory(sourcepath, DestPath)
End Sub

Private Shared Sub CopyDirectory(sourcePath As String, destPath As String)
    If Not Directory.Exists(destPath) Then
        Directory.CreateDirectory(destPath)
    End If

    For Each file__1 As String In Directory.GetFiles(sourcePath)
        Dim dest As String = Path.Combine(destPath, Path.GetFileName(file__1))
        File.Copy(file__1, dest)
    Next

    For Each folder As String In Directory.GetDirectories(sourcePath)
        Dim dest As String = Path.Combine(destPath, Path.GetFileName(folder))
        CopyDirectory(folder, dest)
    Next
End Sub

Answer 1

以下不是目录。

Dim sourcepath As String = "C:\temp\test\1.txt"

因为您将它用作Directory.GetFiles(sourcePath)中的Directory.GetFiles(sourcePath) 。

除此之外，我建议您下次再详细说明您的问题。 代码引发了有意义的异常，例如DirectoryNotFoundException ，其中相应的路径为消息，或者（如果文件存在） IOException ，消息“目录名称无效” 。 你应该把这个添加到问题中。

所以解决方案就是从目录名中删除1.txt ：

Dim sourcepath As String = "C:\temp\test\"

如果只需要复制一个文件，请使用CopyTo方法 ：

Dim sourcepath As String = "C:\temp\test\"
Dim DestPath As String = "C:\temp\Data\"
If Not Directory.Exists(DestPath) Then
    Directory.CreateDirectory(DestPath)
End If
Dim file = New FileInfo("C:\temp\test\1.txt")
file.CopyTo(Path.Combine(DestPath, file.Name), True)

Answer 2

    Dim strMasterResourceDirectory As String
    Dim strDirectory As String

    strDirectory = "C:\TestDestination"
    strMasterResourceDirectory = "TestResource"

   If My.Computer.FileSystem.DirectoryExists(strDirectory) = False Then
        My.Computer.FileSystem.CreateDirectory(strDirectory)
    End If

    ' Loop through each file in the directory
    For Each file As IO.FileInfo In New IO.DirectoryInfo(strDirectory).GetFiles

        If file.Name <> "Thumbs.db" Then

            System.IO.File.Delete(strDirectory & "\" & file.Name)

        End If
    Next

    ' Loop through each file in the directory
    For Each file As IO.FileInfo In New IO.DirectoryInfo(strMasterResourceDirectory).GetFiles

        If file.Name <> "Thumbs.db" Then

            ' copy resource to users local directory

            file.CopyTo(strDirectory & "\" & file.Name)

        End If
    Next