主题：要解密的数据的长度无效。

Dim n As Integer = GetConfigValue("Count",1)
Dim Code As String = GetConfigValue("Register" & ComputerId,"")

Dim sss As String
Try
    sss = DecryptText(Code,"abc","abc")
Catch ex As Exception
End Try

Dim Ok As Boolean
If Code > "" AndAlso sss = ComputerId Then '如果注册码正确
    OK = True
Else
    If n > 1 Then
        Forms("注册").Open()
        Code = GetConfigValue("Register" & ComputerId,"")
        Try
            sss = DecryptText(Code,"abc","abc")
        Catch ex As Exception
        End Try
       
        If Code > "" AndAlso sss = ComputerId Then '如果注册码正确
            OK = True
        End If
    End If
    If n > 2 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)