Create Registry and Read registry

Question

hello every one, i have created registry in windows when i m created setup. but i don't know how can i read this registry at my software's welcome form . or like main form . i want that when user click software icon on that time registry should be check if it is same values then software Should be open other wise will not open and give to exception to him .hope you understand what i want. its too urgent please help me tahnks in advance

Nilanka Dharmadasa · Answer

hey Naim, I got your requirement. Ill find some good way to achieve that and let you know for sure.

Writhe · Answer

Forget the crap from kirtan and niki, if you want to protect your application you need to use at the least a License Provider and that is a big job for anyone that does not know how to implement this type of application security. There are a lot of things you need to do including encryption, where to store the encrypted information, will you have an expiry date, will it allow trial versions if so how many days in trial version, will the application work for a single user on a computer or any user on the computer or network. How will you register the application? will it be done by web server, how? if you use a web server, will you poll the server to see if the registration is a valid one? how will you create the registration key? will it be made up of alpha numeric values like 2FGT5-HRT43-509AQ or just simple stuff like email address and name?

Kirtan Patel · Answer

Friend, as you told you dont want to use registry as its not secure way then you can use encryption in this way you dont need to store any thing anyware as intelligence will be inbuilt in software logic. :) to write this code you can make an md5 hash according to an algorithm of your own so every user must have a key related to lets say his user name and email address that will unlock if the key is typed correctly. lets say if you have a user name "kirtan" and an email address "kirtan007@gmail..com" you can combine it in an algorithm of your own "simplest one for example is concatenation: "kirtankirtan007@gmail.com" now encoding md5 hash to it will give a 32 char "9192ec1632022ab6b3706dc053d7b20f" which forms a serial and this serial can't be decrypted unless you know the algorithm that it was encrypted first. to make an md5 hash value try this: string text="kirtankirtan007@gmail.com"; byte []bytes=System.Text.Encoding.Default.GetBytes(text); byte []md5Bytes=System.Security.Cryptography.MD5.Create().ComputeHash(bytes); string md5Text=System.Text.Encoding.Default.GetString(md5Bytes); now use this type of logic in the software :) if my answer helped you then mark " Do you like this answer " please :)

Kirtan Patel · Answer

hey Friend , Send me your Requirement too in Mail at kirtan007@gmail.com i m very good at registry programming :)

Amit Choudhary · Answer

hi Naim, The Article is here on c-sharpcorner itself gothrough it. very helpful... http://www.c-sharpcorner.com/UploadFile/sushmita_kumari/RegistryKeys102082006061720AM/RegistryKeys1.aspx Hope it helps... Enjoy Coding.... =================================== Don't forget to mark it as answer if it helps :)

Naeem Khan · Answer

hello mam, mam i just want to take some ino. to you. actually i have develop my software but i want to security of my project no bady can't install with out perchase from me . so i want to copy right faciltiy do you have any idea which one is good for security our software . if you know then please let me know beacuse i know only registry security i don't know more security might be they are good or best instead of this thing so please give me your advice . thanks in advance again to you

Nilanka Dharmadasa · Answer

Hey Naim, It is possible via Microsoft.win32 namespace. using Microsoft.Win32; private void button1_Click(object sender, EventArgs e) { //Create RegistryKey MyReg = Registry.CurrentUser.CreateSubKey("SOFTWARE\Adobe\Repair\xxxx"); } private void button2_Click(object sender, EventArgs e) { //Read RegistryKey MyReg2 = Registry.CurrentUser.OpenSubKey("SOFTWARE\Adobe\Repair\xxxx"); } For more info go to this link.It provides a detailed explaination. http://www.codeproject.com/KB/system/registry1.aspx?msg=812147 Check my answer for your MDI problem too. :)

Create Registry and Read registry

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