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What is the best way to handle multiple permission types?

By : Jay
Date : July 27 2020, 04:00 PM
With these it helps I agree with John Downey.
Personally, I sometimes use a flagged enumeration of permissions. This way you can use AND, OR, NOT and XOR bitwise operations on the enumeration's items.
code :
public enum Permission
    VIEWUSERS = 1, // 2^0 // 0000 0001
    EDITUSERS = 2, // 2^1 // 0000 0010
    VIEWPRODUCTS = 4, // 2^2 // 0000 0100
    EDITPRODUCTS = 8, // 2^3 // 0000 1000
    VIEWCLIENTS = 16, // 2^4 // 0001 0000
    EDITCLIENTS = 32, // 2^5 // 0010 0000
    DELETECLIENTS = 64, // 2^6 // 0100 0000

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Multiple permission types (roles) stored in database as single decimal

By : amaladevi
Date : March 29 2020, 07:55 AM
it fixes the issue I was going to ask a question here about whether or not my design for some users/roles database tables was acceptable, but after some research I came across this question: , You use bitwise operations. The pseudo-code would be something like:
code :
bool HasPermission(User user, Permission permission) {
    return (user.Permission & permission) != 0;

void SetPermission(User user, Permission permission) {
    user.Permission |= permission;

void ClearPermission(User user, Permission permission) {
    user.Permission &= ~permission;

MySQL Question - How to handle multiple types of users - one table or multiple?

By : Docithe
Date : March 29 2020, 07:55 AM
wish of those help Your instincts to not create a big table with lots of NULLS is right on. That's a bad idea, from a storage/retrival/maintenance point of view, as well as a data validation point of view (more on that later).
The two most common approcaches:

C# handle multiple database types?

By : Will
Date : March 29 2020, 07:55 AM
Any of those help If the application is non-trivial, then I would say you should be looking at ORM tools.
It won't solve 100% of the problem, but it will get you there. For example, NHibernate is the ORM for my current project, and there is very little database specific code.

C# How to handle multiple message types?

By : Mark van Silfhout
Date : March 29 2020, 07:55 AM
wish of those help You have many options to chose from. Here is a solution based on Inheritance.
code :
// Abstract base class
public abstract class BaseMessage
    public string To { get; protected set; }
    public string From { get; protected set; }
    public abstract string MessageType { get; }

    public BaseMessage(string to, string from)
        To = to;
        From = from;

// Concrete class for every message type.
public class HearthbeatMessage : BaseMessage
    public override string MessageType
            return "Hearthbeat";

Handle Multiple List-Types

By : marinf98
Date : March 29 2020, 07:55 AM
I wish this helpful for you my initial thought had been some way to 'abstract' the enum, but no such methodology exists. however, marc gravell has addressed your scenario to some degree here:
C# enum in interface/base class?
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