主题：关于字符串编码的疑问？

Unicode编码，或者是Default

http://www.foxtable.com/webhelp/scr/1980.htm

编码的转换，参考

正常转utf8

Dim file As String = "文件.txt"
Dim bytes() As Byte
Dim utf As Encoding = Encoding.GetEncoding("utf-8")  
Dim def As Encoding = Encoding.Default
Bytes = def.GetBytes(file)
Bytes = Encoding.Convert(def, utf, Bytes)  
file = def.GetString(Bytes)  
Output.Show(file)

utf8转正常

Dim file As String = "鏂囦欢.txt"
Dim bytes() As Byte
Dim utf As Encoding = Encoding.GetEncoding("utf-8")  
Dim def As Encoding = Encoding.Default
Bytes = utf.GetBytes(file)
Bytes = Encoding.Convert(utf, def, Bytes)
file = utf.GetString(Bytes)  
Output.Show(file)

你遇到具体实际问题再提问吧。