Saving an int to a txt file

Jamie Wyatt

Evening all, having a bit of an issue with a game I'm making. As it stands the game will record your score, and update a high score integer if your score is higher than the current high score.

What I'm trying to do is make a couple of Save / Load methods that will save the highscore when the game is over and re load it when the game is opened again.

I'm trying to do this by just writing the number to a txt file and then reading it back in but I can't get it to work.

The method is:

public void Save(string highScore)
{
highScore.ToString();
System.IO.TextWriter textOut = null;
textOut = new System.IO.StreamWriter(highScore);
Save("highScore.txt");
}

and I'm calling it by using :

highScore.Save("highScore.txt");

But I get red lines under the "Save" on the method call saying " 'int' does not contain a defenition for 'Save' and no extension method 'Save' accepting a first agrument of type 'int' could be found"

I've tried calling ToString outside of the method before it is called as well but I had the same problem.

Any help would be great.

Cheers.

6 Replies

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Vulpes15y ago
Accepted answer
If the file contains an integer on the first line then, on the face of it, the code should work.

However, the code may be working but you don't know it!

You're assigning int.Parse(highScoreString) to a local variable called loadedHighScore which goes out of scope when the method ends. If you intended instead to assign it to a field (i.e. a class level variable) of the same name, then the local variable will be hiding it. So, if that's the case, you'll just want:

loadedHighScore = int.Parse(highScoreString); // now assigns to field
0
Jamie Wyatt15y ago
Ah yeah, hadn't defined the loadedHighScore outside of that method. Corrected that and all's golden!

Cheers for your help,
J.
0
Jamie Wyatt15y ago
Brilliant! Got the bat registering hits and the save method working. Now just trying to get it to load the number from the file and set that as the current high score.

This is my load method:

public void Load(string highScoreString)
{

StreamReader sr = new StreamReader("highScore.txt");

highScoreString = sr.Readline();

sr.Close();

int loadedHighScore = int.Parse(highScoreString);

}

and I'm calling it in my update method with:

Load("highScore.txt");

As far as I can see the method is loading the string from the file but then won't parse it for some reason.

Ideally what I want it to do is grab the number from the file, parse it and then set that int as the highscore.

Thanks so much for your help so far!

J
0
Frogleg15y ago
Put this in update method

if (keyState.IsKeyDown(Keys.F5))
{
Save(score);

}

and to save

public void Save(int highScore)
{
using (StreamWriter sw = new StreamWriter("highScore.txt"))
{
sw.WriteLine(Convert.ToString(highScore));
}
}

problem is as per your other post - you've got a hole in your bat
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Jamie Wyatt15y ago
Still not working for me I'm afraid.

Same error under the "Save" call.

Am I calling this wrong? I've got that method in and I'm calling it by typing highScore.Save("highScore.txt");

Many thanks for your help.

J

EDIT : I've attached the source code now, the method I'm talking about is in the "PlayScreen" class at the bottom.
0
Frogleg15y ago
using System.IO

public void Save(string highScore)
{
using (StreamWriter sw = new StreamWriter("highScore.txt"))
{
sw.WriteLine(highScore);
}
}
0