主题：ftp的根目录写法

用/肯定不会错。

用\的话，有可能认为是相对路径。

路径，直接用ie浏览器能否下载？

如果用downloadfile无法下载，试试自己封装一个方法。

Dim url As String = "http://www.foxtable.com/download/80222/update.zip"

Dim rqst As System.Net.HttpWebRequest = System.Net.HttpWebRequest.Create(url)

Dim rsps As System.Net.HttpWebResponse = rqst.GetResponse

Dim stm As System.IO.Stream = rsps.GetResponseStream()

Dim buffer(1024) As Byte
Dim fileStream As new System.IO.FileStream("d:\update.zip", System.IO.FileMode.Create, System.IO.FileAccess.ReadWrite)
Dim count As Integer = stm.Read(buffer, 0, buffer.Length)

Do While count > 0
    buffer.Initialize
    fileStream.Write(buffer, 0, count)
    fileStream.Flush()
    count = stm.Read(buffer, 0, buffer.Length)
Loop

fileStream.Close()
stm.Close