CODEWITHSUNDEEP
c#stringenum-flags
Lukas
Lukas

Reputation: 2352

Converting string to flags enum in C#

A device reports status of its limit switches as a series of ones a zeros (meaning a string containing "010111110000"). Ideal representation of these switches would be a flags enum like this:

[Flags]
public enum SwitchStatus
{
    xMin,
    xMax,
    yMin,
    yMax,

    aMax,
    bMax,
    cMax,
    unknown4,

    unknown3,
    unknown2,
    unknown1,
    unknown0
}

Is it possible to convert the string representation to the enum? If so, how?

Upvotes: 4

Views: 4092

Answers (2)

Adriano Carneiro
Adriano Carneiro

Reputation: 58645

First you have to convert your "binary string" to int.

String binString = "010111110000";
int number = Integer.parseInt(binString, 2);

You have to have declared your enum items with their respective numbers:

[Flags]
public enum SwitchStatus
{
    xMin = 1,
    xMax = 2,
    yMin = 4,
    //...
    unknown0 = 32 //or some other power of 2
}

At last, the mapping. You get your enum from the number like this:

SwitchStatus stat = (SwitchStatus)Enum.ToObject(typeof(SwitchStatus), number);

Upvotes: 8

Leonard Brünings
Leonard Brünings

Reputation: 13272

You can use Convert.ToInt64(value, 2) or Convert.ToInt32(value, 2) this will give you either the long or the int, then simply use

[Flags]
public enum SwitchStatus : int // or long
{
    xMin = 1,
    xMax = 1<<1,
    yMin = 1<<2,
    yMax = 1<<3,
    ...
}

SwitchStatus status = (SwitchStatus)Convert.ToInt32(value, 2);

Upvotes: 14

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