how to check if user have a permission or not

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4.00/5 (2 votes)

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hi all
i am making program and make control of user to add data,edit or delete
the admin can make permission to each user
i want when user login and try to add, edit or delete check if he has a permission or not but i do not know how to make check in all forms in program
please can any one help me in code how to make this

Posted 21-Sep-12 3:38am

shimaa010

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Er. Tushar Srivastava 21-Sep-12 9:40am

Are you talking about system admin or some local admin of that application?

shimaa010 21-Sep-12 9:42am

some local admin of the application

2 solutions

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Sergey Alexandrovich Kryukov · Accepted Answer · 2012-09-28T09:22:00

Solution 3

Unlike other answers, pretty complex ones, I have a practical and simple approach: don't do defensive programming, do offensive. Simply do this operation under try-catch block. If the permission denied exception is not thrown, the user has the access, and the operation is already done. If it was thrown — inform the user of the failure and its reason.

As simple as that.

—SA

Posted 28-Sep-12 9:22am

Sergey Alexandrovich Kryukov

Updated 28-Sep-12 10:23am

v3

Comments

fjdiewornncalwe 28-Sep-12 15:24pm

+5. The proper approach to this.

Sergey Alexandrovich Kryukov 28-Sep-12 15:52pm

Thank you, Marcus.
--SA

[no name] 28-Sep-12 15:56pm

Hey Sergey...could you show how to do this with some code ..it will very help full for me also

fjdiewornncalwe 28-Sep-12 16:04pm

try
{
// Try to perform the action.
}
catch( Exception error )
{
// If the error type is correct for a user is unauthorized situation you have successfully stopped them from performing the task...
}

Sergey Alexandrovich Kryukov 28-Sep-12 16:11pm

Yes, this kind of code.
Thank you, Marcus.
--SA

fjdiewornncalwe 28-Sep-12 16:14pm

It is a little bit of a sarcastic response, but I couldn't help myself on this one. (Had 2 pints of beer at lunch)

Sergey Alexandrovich Kryukov 28-Sep-12 16:22pm

Your coding is alcohol-proof :-)
--SA

Maciej Los 28-Sep-12 16:14pm

I like it: don't do defensive programming, do offensive!
My 5!

Sergey Alexandrovich Kryukov 28-Sep-12 16:21pm

Thank you, Maciej.
--SA

Er. Tushar Srivastava · Accepted Answer · 2012-09-21T03:50:00

Hi Friend,
This can help you. I will not be posting direct codes, but I will be providing you with the hints to find your path.
See, Since you have some local Admin and users, the solution boils down to just testing a single variable.
1. See, define a variable of int type...

2. Set few codes, viz.. 01 = ADD ONLY (ie. the user can only add the data entry)

3. Similarly, setup few codes... 01, 02, 03, 04....

4. Now, when a user logs into his/her account, this variable will take any of the above values.... Now you can define this variable globally, so, any of the form can read this variable or more better, define it into a class called User class.

5. Now, based on this code, the program can simply provide authority to the user.

Hope, that this can help you.

Regards
Tushar Srivastava