CODEWITHSUNDEEP
c#.nettaglib-sharpcscore
itsthatblackkid
itsthatblackkid

Reputation: 309

How do i stop the variable from resetting

In my code I have a method with the two parameters. One parameter takes in an int value and the other an array.

e.g 

 public void NextSong(int i, TagLib.File[] queue)
 {
    i++;
    SONG_URL = queue[i].Name;
    Stop();
    Play();
 }

My problem here is every time this variable is called like so: 

NextSong(0, SongQueue);

It reverts back to the amount placed in the parameter field. How do I stop this?

Upvotes: 2

Views: 1243

Answers (2)

Draken
Draken

Reputation: 3189

Two ways:

public int NextSong(int i, TagLib.File[] queue)
{
    i++;
    SONG_URL = queue[i].Name;
    Stop();
    Play();
    return i;
}

int i = 0;
i= NextSong(i, SongQueue);

Here we are passing a variable of i to the method, during the method we increment that variable and then pass it back via the return. We now have reference to that variable.

OR

public void NextSong(TagLib.File[] queue, out int i)
{
    i++;
    SONG_URL = queue[i].Name;
    Stop();
    Play();
}

int i = 0;
NextSong(SongQueue, out i);

This uses the out functionality, which enforces someone to pass a variable that will be returned. It passes the variable by reference (You could also use ref, but since int can't be null, it doesn't change much in this case).

Upvotes: 2

npinti
npinti

Reputation: 52185

That is working as expected, as long as 0 it will keep on being passed, the variable will always reset.

What you can do it to change the signature of the NextSong method to yield back the value of i:

public int NextSong(int i, TagLib.File[] queue)
{
    i++;
    SONG_URL = queue[i].Name;
    Stop();
    Play();

    return i;
}

Then in your code you initialize some global value to 0 and call the method as follows: globalVariable = NextSong(globalVariable, SongQueue).

Upvotes: 2

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