C#•2y ago

❔ ✅ Access variable from another script

Im trying to make a project in WFA and i want to access a variable from my main form in a diff script. I looked it up and the only stuff i could find was for unity

68 Replies

PhoenixXemeOP•2y ago

i know my code is bad but thats not the point i just want to know how to access the stoneUpg variable in the shop script

Florian Voß•2y ago

if you make the cookie field static you can access from everywhere using typename:

Console.WriteLine(Form1.cookie);

Console.WriteLine(Form1.cookie);

or keeping field as it is without static you can access it on an object of type Form1:

Form1 form1;
form1.cookie

Form1 form1;
form1.cookie

PhoenixXemeOP•2y ago

i maent stoneUpg not cookie XD

PhoenixXemeOP•2y ago

@voflorian99

cap5lut•2y ago

the same applies either way either make it static and u can access it via YourClass.NameOfIt, or u need to have an instance yourInstanceOfYourClass.NameOfIt ~~whats the error its giving u there?~~ nvm u now have mixed it vice versa, u have the static member, and try to access it as instance member Form1.stoneUpg would be the way to access it as static member

PhoenixXemeOP•2y ago

could we get in a vc and you show me because my brain cant work rn XD

PhoenixXemeOP•2y ago

cap5lut•2y ago

my english skills regarding speaking/listening are really bad i can only read and write some, so voice is a no-no for me but its literally just Form1.stoneUpg instead of form1.stoneUpg in that case ._.

PhoenixXemeOP•2y ago

i tried that already

cap5lut•2y ago

do u know the difference between the public, protected and private keywords?

PhoenixXemeOP•2y ago

no 😦 still VERY new to C#

cap5lut•2y ago

public = its accessable from other classes protected = its accessable from sub classes (inheritence) private = noone else touch that!

PhoenixXemeOP•2y ago

cap5lut•2y ago

static int stoneUpg does not have any of these visibility modifiers, which means it defaults to private

PhoenixXemeOP•2y ago

wait you can do public and static i didnt know that

PhoenixXemeOP•2y ago

PhoenixXemeOP•2y ago

no more errors

cap5lut•2y ago

yeah, because they have completely differnt meaning. u can combine them ofc

PhoenixXemeOP•2y ago

so what dose stiatic do i didnt know that

cap5lut•2y ago

do u know the difference between a class and an instance?

PhoenixXemeOP•2y ago

no XD

cap5lut•2y ago

okay lemme take a quick ciggy break (5min) while thinking about how to explain it ;p

PhoenixXemeOP•2y ago

this was working 4 mins ago 😭

PhoenixXemeOP•2y ago

i dont understand

cap5lut•2y ago

back so, lets think about cars Car is basically our class, its a description of our thing

public class Car
{
}

public class Car
{
}

all cars have in common that they have 4 tires right?

PhoenixXemeOP•2y ago

yea

cap5lut•2y ago

that basically means that they are bound to the type, our class Car. thats expresses by using the static keyword:

public class Car
{
  public static int TireCount = 4;
}

public class Car
{
  public static int TireCount = 4;
}

PhoenixXemeOP•2y ago

so staitc values can not be changed?

cap5lut•2y ago

now cars usually have colors, u have a red car, a blue, a yellow, etc

PhoenixXemeOP•2y ago

mhm

cap5lut•2y ago

so this is something that is not bound to the type (Car) itself, but to each individual car basically an instance of that type

public class Car
{
  public static int TireCount = 4;
  public Color ColorOfThisCar;
}

public class Car
{
  public static int TireCount = 4;
  public Color ColorOfThisCar;
}

so now, naturally u can access the tire count via its type Car.TireCount because its bound to the type but u can not do the same for the color, right?

PhoenixXemeOP•2y ago

ahhhhhh i get it

cap5lut•2y ago

Car redCar = new Car();
redCar.ColorOfThisCar = red;

Car yellowCar = new Car();
redCar.ColorOfThisCar = yellow;

Car redCar = new Car();
redCar.ColorOfThisCar = red;

Car yellowCar = new Car();
redCar.ColorOfThisCar = yellow;

(ofc this is more pseudo code than real code) so both redCar and yellowCar are instances (also called objects) of the type Car

PhoenixXemeOP•2y ago

cap5lut•2y ago

my tire count thingy was simply a rough explanation. static members can be changed as well

PhoenixXemeOP•2y ago

cap5lut•2y ago

my explanation was only about where that member belongs to, static to the type itself, non-static to each instance/object

PhoenixXemeOP•2y ago

so Form1 is a instance?

cap5lut•2y ago

Form1 is the type, not the instance itself so here stoneUpg has to be static or else the compiler would complain

PhoenixXemeOP•2y ago

ok i get it

PhoenixXemeOP•2y ago

new problems

PhoenixXemeOP•2y ago

this is in Form1.cs

cap5lut•2y ago

that part gives the reason, if u scroll down a bit

PhoenixXemeOP•2y ago

PhoenixXemeOP•2y ago

ik but i have no idea how to fix it

PhoenixXemeOP•2y ago

like i closed it

cap5lut•2y ago

that means that another program has that file opened

PhoenixXemeOP•2y ago

how do i find out what has it open

PhoenixXemeOP•2y ago

because this is the code

cap5lut•2y ago

oh, its not even another program, but urs itself

PhoenixXemeOP•2y ago

? please explain

cap5lut•2y ago

well, u open the file with read permissions using the StreamReader, afterwards u try to open the file again with write access, this is bound to fail

PhoenixXemeOP•2y ago

i dont understand sorry

cap5lut•2y ago

u should open it for read and write acces and simply use it based on that (need to dig through documentation quick)

PhoenixXemeOP•2y ago

yea i have no clue what your talking about

cap5lut•2y ago

what im saying is more or less "u cant use it like that"

PhoenixXemeOP•2y ago

cap5lut•2y ago

if u "open" a file u have choices on how to open it depending on ur needs. mostly its "split" between read access and write access. imagine 3 people standing around a piece of paper. as long as everyone only wants to read everything is fine but now think about if all of those 3 want to write their text onto that piece of paper, letter by letter, it will become a mess so using a stream reader/writer also implies their intent what they want to do with the file and the OS sorta "locks" the usage to just that. because u want to read in first place (stream reader) its opened as "i only want to read" but then u open it also for writing, where it then explodes

PhoenixXemeOP•2y ago

so i need to move this line

cap5lut•2y ago

well, basically u cant use neither StreamReader nor StreamWriter like that u would have to open the stream with the read+write access and then create the reader and writer from that stream

PhoenixXemeOP•2y ago

how please tell me how i do that

cap5lut•2y ago

as u want to also write to the file u need write permissions, these usually also imply read permissions, so it would result in

Stream stream = File.OpenWrite(filePath);

Stream stream = File.OpenWrite(filePath);

generally u should create this and the reader/writer in the method directly, not as member (especially not as static member)

PhoenixXemeOP•2y ago

yea i give up i have no idea what im doing and i have being trying to fix this all day

cap5lut•2y ago

generally i would say, u should use some simple console applications for now, to test this stuff. GUI is quite complex and to me it feels like u r lacking quite same basics. u could also for a "quick and dirty" fix use the void File.WriteAllText(string path, string content) and string File.ReadAllText(string path) methods but the main issue is stil the mentioned lack @PhoenixXeme use $close to mark this thread as answered 😉

MODiX•2y ago

Use the /close command to mark a forum thread as answered

PhoenixXemeOP•2y ago

cap5lut•2y ago

seems the bot is broken for now, so just ignore it ;p more or less its already marked as resolved anyway ;p

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ ✅ Access variable from another script