CODEWITHSUNDEEP
c#binary
user1428798
user1428798

Reputation: 1546

decrypt a binary masque c#

I have a class a binary masque:

  public class Masque
{
    public bool MasquerAdresse { get; set; }

    public bool MasquerCpVille { get; set; }

    public bool MasquerTelephone { get; set; }

    public bool MasquerFax { get; set; }

    public bool MasquerEmail { get; set; }
    public bool MasquerNom { get; set; }
}

and in the database I have a binary masque field: when i have the value 1=> MasquerAdresse is true, 2 =>MasquerCpVille is true, 4=> MasquerTelephone is true 3=> MasquerAdresse and MasquerCpVille are true etc..., which is the best methode to decode this binary masque in c#

Upvotes: 1

Views: 75

Answers (1)

Toxantron
Toxantron

Reputation: 2398

As others already pointed out in C# we usually use Flag Enums and Enum.HasFlag() to do this. As @Groo added in his comment this is also more memory efficient since every bool takes up an entire byte. Using enums it would look like this:

[Flags]
public enum Masque
{
    MasquerAdresse = 1,

    MasquerCpVille = 2,

    MasquerTelephone = 4,

    MasquerFax = 8,

    MasquerEmail = 16

    MasquerNom = 32
}

var masque = Masque.MasquerAdresse | Masque.MasquerTelephone;
var fromInt = (Masque) 5;
var trueResult = masque.HasFlag(Masque.MasquerTelephone);

If you are however determined to use a class it would look like this:

public class Masque
{
    public bool MasquerAdresse { get; set; }
    public bool MasquerCpVille { get; set; }
    public bool MasquerTelephone { get; set; }
    public bool MasquerFax { get; set; }
    public bool MasquerEmail { get; set; }
    public bool MasquerNom { get; set; }

    public static Masque FromBits(int bits)
    {
        return new Masque
        {
            MasquerAdresse = (bits & 1) > 0,
            MasquerCpVille = (bits & 2) > 0,
            ...
        };
    }
}

Using the binary & it will apply the bit mask which either returns the value or 0. You can either compare the result with the mask (bits & 2) == 2 or simply check for > 0.

Upvotes: 4

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