C#•3w ago

Iterate through Enums

If I want to make an action iterate through an enum everytime it's taken, obviously I would just use object++; but what do I except when I reach the max value and want it to return back to the min value? And if a simple increment doesn't work how would I loop through the enum as such?

12 Replies

Buddy•3w ago

iterate through an enum in what way? You can use this https://learn.microsoft.com/en-us/dotnet/api/system.enum.getvalues?view=net-9.0 And then iterate them that way. or if they follow the default pattern of 0, 1, 2, 3 .. you can just do a for-loop and cast the integer to the specified enum

CykotechOP•3w ago

I would essentially want to go 0, 1, 2, 3, 0, 1....

Buddy•3w ago

How many times? You can just use index = i % totalEnumCount % is the remainder https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/arithmetic-operators#remainder-operator-

CykotechOP•3w ago

The number of times is irrelevant. The enum would only change when an action is taken. But I could do something like this?

void changeEnum()
{
  randomEnum = randomEnum + 1 % 4;
}

void changeEnum()
{
  randomEnum = randomEnum + 1 % 4;
}

I picked 4 because that's the length of my enum.

Buddy•3w ago

why + 1?

CykotechOP•3w ago

Cuz I want the next enum. And the modulo would keep the value within the bounds of the enum? Can I apply further calculations after using the increment operator? randomEnum++ % 4

sibber•3w ago

no % takes precedence

CykotechOP•3w ago

So I'd have to calculate the index, then apply the modulo. In seperate equations.

canton7•3w ago

Why? Just x = (x + 1) % Length

TheRanger•3w ago

what if enum is like this

public enum Foo
{
 a = 1
b = 16
c = 128
}

public enum Foo
{
 a = 1
b = 16
c = 128
}

i dont think increment would work with that enum

MODiX•3w ago

Buddy

You can use this https://learn.microsoft.com/en-us/dotnet/api/system.enum.getvalues?view=net-9.0 And then iterate them that way.

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Buddy•3w ago

But yes, you are right. It wouldn't work that way. But you can access their values and do it against the index of the values and then cast that to the enum

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Iterate through Enums