.Net 해외개발자

      If Not System.IO.Directory.Exists(folderPath) Then
           System.IO.Directory.CreateDirectory(folderPath)
      End If

      System.IO.File.Copy(복사할대상파일, 복사하고싶은곳, True)

      IO.Path.GetFileName(복사할대상파일)

     ''' <summary>
    ''' 메모리에 쓰는방법
    ''' </summary>
    ''' <remarks></remarks>
    Private Sub MakeMemoryMappedFile(ByVal tar As String, ByVal tarText As String)
        'Dim File = MemoryMappedFile.CreateOrOpen(target, MaxSize)
        Dim File = MemoryMappedFile.CreateOrOpen(target, MaxSize)
       
        Dim bytes = New Byte() {}
        bytes = StrToByteArray(tarText)

        Using writer = File.CreateViewAccessor(0, bytes.Length)

            writer.WriteArray(Of Byte)(0, bytes, 0, bytes.Length)

        End Using

    End Sub

 
    ''' <summary>
    ''' 메모리로부터 읽는방법
    ''' </summary>
    ''' <remarks></remarks>
    Private Function ReadMemoryMappedFile(ByVal tarMem As String) As String
        Dim result As String = ""

        Try
            Using file = MemoryMappedFile.OpenExisting(tarMem)
                Using reader = file.CreateViewAccessor(0, MaxSize)

                    Dim bytes = New Byte(MaxSize) {}
                    reader.ReadArray(Of Byte)(0, bytes, 0, bytes.Length)

                    result = System.Text.Encoding.UTF8.GetString(bytes)

                End Using
            End Using

            Return result

            'Catch noFile As FileNotFoundException
            '    MsgBox("Error : " + noFile.Message)
            '    Return result

        Catch Ex As Exception
            Return result
        End Try

    End Function

 MakeMemoryMappedFile(키값, 넣을내용)
 

 ReadMemoryMappedFile(키값)