下载update.txt检测对比一下日期即可
try
Network.DownloadFile("http://www.foxtable.com/download/update.txt", "d:\update.txt" ,"" ,"" ,False, 100000, True) '下载update.txt文件
Dim ud() As String = FileSys.ReadAllText("d:\update.txt").Split("|") '获取文件内容
Dim Sdate1 As Date = Cdate(ud(0)) '服务器update.txt发布日期
Dim Sdate2 As Date = Cdate(ud(1)) '服务器Version.txt发布日期
Dim Cdate1 As Date = PublishDate '客户端发布日期
Dim Cdate2 As Date = FileSys.ReadAllText(ProjectPath & "\Bin\Version.txt") '客户端Version.txt发布日期
If Sdate2 > Cdate2 OrElse Sdate1 > Cdate1 Then
msgbox("有新版本")
'静默升级代码 Syscmd.Project.Update(False,False)
End If
catch ex As exception
msgbox(ex.message)
msgbox("下载失败")
End try