采用注册机制进行判断 如何告知对方系统当前试用次数呢?比如可以试用30次 当前已经试用了多少次?
Dim n As Integer = GetConfigValue("Count",1)
Dim Code As String = GetConfigValue("Register" & ComputerId,"")
Dim Ok As Boolean
If Code > "" AndAlso DecryptText(Code,"abc","abc") = ComputerId Then '如果注册码正确
OK = True
Else
If n > 30 Then
Forms("注册").Open()
Code = GetConfigValue("Register" & ComputerId,"")
If Code > "" AndAlso DecryptText(Code,"abc","abc") = ComputerId Then '如果注册码正确
OK = True
End If
End If
If n > 60 AndAlso Ok = False Then
Messagebox.Show("您正在使用的产品已经超出试用次数!")
Syscmd.Project.Exit()
End If
End If
n = n + 1
SaveConfigValue("Count",n)