Click here to Skip to main content
15,909,051 members
Home / Discussions / Visual Basic
   

Visual Basic

 
QuestionPassing parameters to Access Pin
Central_IT27-Mar-07 1:41
Central_IT27-Mar-07 1:41 
AnswerRe: Passing parameters to Access Pin
Dave Kreskowiak27-Mar-07 7:38
mveDave Kreskowiak27-Mar-07 7:38 
GeneralRe: Passing parameters to Access Pin
Central_IT28-Mar-07 2:55
Central_IT28-Mar-07 2:55 
Questionopening a text file by rightclick openwith option Pin
balakpn27-Mar-07 0:35
balakpn27-Mar-07 0:35 
AnswerRe: opening a text file by rightclick openwith option Pin
sathesh pandian27-Mar-07 0:55
sathesh pandian27-Mar-07 0:55 
GeneralRe: opening a text file by rightclick openwith option Pin
balakpn27-Mar-07 3:41
balakpn27-Mar-07 3:41 
Questionlicensing our product Pin
balakpn27-Mar-07 0:14
balakpn27-Mar-07 0:14 
AnswerRe: licensing our product Pin
Christian Graus27-Mar-07 2:18
protectorChristian Graus27-Mar-07 2:18 
You have two options:

1 - you can write a C++ dll which will allow you to require a password from the installer itself
2 - you can write some code inside your app that requires a key to be entered

In both instances, you have two choices:

1 - generate a key that is unique to the machine, which means they'd need to call you in order to finish the install
2 - just put a key in there that's the same for everyone

balakpn wrote:
we can use any cryptography algorithms to generate a key but how to embed it, so user will enter it while installation


Obviously, you would 'embedd' it, by writing code that requires the key to be entered.

balakpn wrote:
f i am correct those things will be related with registry


The registry is one obvious place to store that the key was already entered, so you don't ask for it again, yes.

One thing you need to know. If your app is VB.NET, a tech savvy user can decompile it, remove the licence code, and recompile. Easier still, they can read your code with a tool like Reflector, and just read how you generate your key, and thus discover it without having to know it in the first place.



Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

QuestionWant to display based on date............... Pin
Member 387988126-Mar-07 23:28
Member 387988126-Mar-07 23:28 
AnswerRe: Want to display based on date............... Pin
Tirthadip26-Mar-07 23:46
Tirthadip26-Mar-07 23:46 
GeneralRe: Want to display based on date............... Pin
Member 387988127-Mar-07 0:15
Member 387988127-Mar-07 0:15 
Questionhow to create dynamic data reports in vb6 Pin
Drake153226-Mar-07 23:26
Drake153226-Mar-07 23:26 
Questionfile dialog box.................. Pin
Member 387988126-Mar-07 22:01
Member 387988126-Mar-07 22:01 
AnswerRe: file dialog box.................. Pin
Tirthadip26-Mar-07 22:44
Tirthadip26-Mar-07 22:44 
GeneralRe: file dialog box.................. Pin
Member 387988126-Mar-07 23:58
Member 387988126-Mar-07 23:58 
GeneralRe: file dialog box.................. Pin
Tirthadip27-Mar-07 0:48
Tirthadip27-Mar-07 0:48 
QuestionOrdering columns in a DataGridView Pin
steve_rm26-Mar-07 20:31
steve_rm26-Mar-07 20:31 
AnswerRe: Ordering columns in a DataGridView Pin
Tirthadip26-Mar-07 21:51
Tirthadip26-Mar-07 21:51 
QuestionSaving/Restoring ActiveX/ocx control paremeters Pin
GaryAW26-Mar-07 20:29
GaryAW26-Mar-07 20:29 
Questioncrystal report Pin
ajay5888626-Mar-07 20:28
ajay5888626-Mar-07 20:28 
AnswerRe: crystal report Pin
Tirthadip26-Mar-07 22:05
Tirthadip26-Mar-07 22:05 
Questionhelp- MCPD or MCSD Pin
ajay5888626-Mar-07 20:24
ajay5888626-Mar-07 20:24 
AnswerRe: help- MCPD or MCSD Pin
Christian Graus27-Mar-07 2:19
protectorChristian Graus27-Mar-07 2:19 
AnswerRe: help- MCPD or MCSD Pin
kubben27-Mar-07 3:04
kubben27-Mar-07 3:04 
GeneralRe: help- MCPD or MCSD Pin
ajay5888627-Mar-07 20:45
ajay5888627-Mar-07 20:45 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.