如何在vb.net 2008中将一个文件复制到另一个文件

Question

我需要检查文件是否存在。如果文件不存在，那么我需要将一个文件复制到另一个文件

我这样累了

Dim Roming As String             roming = Environment.GetFolderPath（Environment.SpecialFolder.ApplicationData）

如果不是File.Exists（roming＆amp;“\”＆amp; Environment.UserName.ToString＆amp; CONFIG_FILE）那么

我需要将默认文件复制到roming path file

默认文件是：My.Application.Info.DirectoryPath＆amp; CONFIG-FILE

Answer 1

不确定您要做什么，但这是一个简单的例子：

Dim OriginalFilePath As String = "Put here you file path"
Dim NewFilePath As String = "Put here you new file, that you want to copy into it"
' Checks if the original file exists in the file system of the computer.
If My.Computer.FileSystem.FileExists(OriginalFilePath) = True Then
     ' Creates a new file, and copy all the content of the original file, into it
     System.IO.File.Copy(OriginalFilePath, NewFilePath)
End If

有关详细信息，请查看here。

Answer 2

这是代码：

Dim roming As String
roming = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)
If Not File.Exists(roming & "\" & Environment.UserName.ToString & CONFIG_FILE) Then
IO.File.Copy(My.Application.Info.DirectoryPath & CONFIG-FILE , roming & "\" & Environment.UserName.ToString & CONFIG_FILE)
End If