Solved

Permissions based security in C#

Posted on 2009-04-07
5
257 Views
Last Modified: 2013-12-17
Hey guys, I am building an app in C# that needs to have permissions based security. I have 3 tables that apply to this in SQL.

Table 1: Users
Table 2: Available Permissions
Table 3: Assigned Permissions

Any user could have 1 or 50 permissions assigned to them. Each "section" within the app has a ID associated with it, and the permission for that area reflects that ID. For instance if the "Customers" section has an ID of '4'  - then the user would need to have permission ID '4' assigned to them if they are going to need access to the "Customers" section of the application.

My Question:
What is the best way for keeping the recordset containing the users assigned permissions so that I can reference it throughout the application? This recordset will need to be available on multiple forms at multiple times. I understand I could query the database, but that could be a large hit on the number of unnecessary requests.

I was considering a variable array? But I am lost how to query the array for a particular value without looping. Unless looping would be the best or only method? Maybe variable array isn't what I should use - maybe DataTable?

Any experienced suggestions would be great - thanks.

0
Comment
Question by:ProWebNetworks
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 12

Accepted Solution

by:
ShazbotOK earned 500 total points
ID: 24089302
Create a serializable strongly typed class object and then map that to to a List<T> where you can then utilize the powerful asynch search/compare functionality of that class object.
By setting the class object as serializable you can construct the class to be your business object which can be instantiated by a XML formatted dataset, this would allow you to create a list of business objects from the SQL rowset and utilize the object oriented programming that we all know and revere.
IE:

class SecurityList : List<SecurityContainer>
{}  // generates a strongtype list specifically for the SecurityContainer

[Serializable]
Class SecurityContainer
{
         private int secLevel;
         private string secPermissionName;

         public int SecurltyLevel
         {
              get{ return secLevel;}
              set{ secLevel = value;}
         }
         // more properties to instantiate
}
 
0
 
LVL 1

Author Comment

by:ProWebNetworks
ID: 24090281
So how would I add values to the list class?
this.Add(SecID);  ??

If this were the case I would have for an example 10 - ID's to add to the list. I would do:

this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)
this.Add(SecID)

Then how would I go about searching for a specific id? For example I would need to see if the SecID 4 shows up in the list to see if the user should have access to the customer area.

0
 
LVL 1

Author Comment

by:ProWebNetworks
ID: 24091096
Using your suggestion to use Lists was the nudge in the right direction I needed. Below is my code and it works - thank you.
static List<int> SecurityList = new List<int>();      
 
 
  public static void PopulateSecurityList()
        {
            
            SecurityList.Add(4);
            SecurityList.Add(9);
            SecurityList.Add(10);
        }
 
        public static bool CheckSecurity(int SecurityID)
        {
            return SecurityList.Contains(SecurityID);
 
        }

Open in new window

0
 
LVL 1

Author Comment

by:ProWebNetworks
ID: 24091101
How would I change that to be Serialized? Or do I need to?
0
 
LVL 12

Expert Comment

by:ShazbotOK
ID: 24098062
Serialization will allow you to take the data from SQL in XML format and serialize it to the security object which would save you from having to iterate through each value populating the object.
However that really is only a benifit if you are expecting to have high volume on your services.  If not high volume then it may not be worth the time taken to develop that portion.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question