how to load a file from folder to memory stream buffer

I am working on vb.net win form. My task is display the file names from a folder onto gridview control. when user clicks process button in my UI, all the file names present in gridview, the corresponding file has to be loaded onto memory stream buffer one after another and append the titles to the content of the file and save it in hard drive with _ed as a suffix to the file name.

I am very basic programmer. I have done the following attempt and succeeded in displaying filenames onto gridview. But no idea of later part. Any suggestions please?

'Displaying files from a folder onto a gridview

    Dim inqueuePath As String = "C:\Users\Desktop\INQUEUE"
    Dim f开发者_JAVA百科ileInfo() As String
    Dim rowint As Integer = 0
    Dim name As String
    Dim directoryInfo As New System.IO.DirectoryInfo(inqueuePath)
    fileInfo = System.IO.Directory.GetFiles(inqueuePath)

    With Gridview1
        .Columns.Add("Column 0", "FileName")
        .AutoResizeColumns()
    End With

    For Each name In fileInfo
        Gridview1.Rows.Add()
        Dim filename As String = System.IO.Path.GetFileName(name)
        Gridview1.Item(0, rowint).Value = filename
        rowint = rowint + 1
    Next

Thank you very much for spending your valuable time to read this post.

to read a file into a memorystream is quite easy, just have a look at the following example and you should be able to convert it to suite your needs:

    Dim bData As Byte()
    Dim br As BinaryReader = New BinaryReader(System.IO.File.OpenRead(Path))
    bData = br.ReadBytes(br.BaseStream.Length)
    Dim ms As MemoryStream = New MemoryStream(bData, 0, bData.Length)
    ms.Write(bData, 0, bData.Length)

then just use the MemoryStream ms as you please. Just to clearify Path holds the full path and filename you want to read into your memorystream.