vb2008 怎么循环txt内容

vb2008 如何循环txt内容
vb2008 如何循环txt内容，再一行一行的写到其他txt中， 如何有重复的去掉

[解决办法]
msdn search TextReader TextWriter

[解决办法]

VB.NET code

...'use TextReader read textfile to stringReadDim stringToWrite As StringstringToWrite = string.Join(VbCrLf, stringRead.Split(VbCrLf).Distinct())'use TextWriter write stringToWrite to another textfile...