Question

VB.net 读取文本文件？

点击按钮1，读取（创建）“c:/123.txt”中的文本。求语法

Answer 1

IO.File.ReadAllBytes("c:/123.txt")
        IO.File.ReadAllLines("c:/123.txt")
        IO.File.ReadAllText("c:/123.txt")
        if IO.File.Exists("c:/123.txt") then
        
        else msgbox("文件不存在")
        end if

Answer 2

if dir “c:/123.txt”="" then'判断有没有
msgbox""vbokonly,""
exit sub
end if
open“c:/123.txt”for (读取时input，创建output) as #1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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close 1