小弟我是新手，小弟我想问问呢怎么用getfileopenname读取txt文件

string ls_files,as_filepath
	li_ret=GetFileOpenName("Select File",as_filepath,ls_files,"Excel", "Excel(*.xls*),*.xls*,All Files (*.*), *.*")
	if li_ret=-1 then
		ls_errtext='GetFileOpenName Failed!'
		goto e
	elseif li_ret=0 then
		ls_errtext='0'
		goto e 
	end if
messagebox('',as_filepath)