C#•2y ago

How to access wanted property of a class instance? [Answered]

So i have a class in which i generate it's instances with properties A B C D and i save them to a file, now i want to access e.g C property and determine stuff based on it

27 Replies

Thinker•2y ago

You mean you want to access the C property from the contents of the file? Or just access the C property in general?

Whiteboy•2y ago

@thinker227 just in general i mean the one way which is easier/simpler i want to access that property then display other stuff based on it e.g C = 1 i display number C = 2 i display photo etc.

Thinker•2y ago

yourObject.C?

Whiteboy•2y ago

idk it doesn't allow me to unreachable code

Kouhai•2y ago

unreachable code means you have a return statement before that statement

Whiteboy•2y ago

@Kouhai can u take a look at it? maybe it's simple and im just overthinking it and i can't explain it properly

Kouhai•2y ago

Sure, post the code here $code

MODiX•2y ago

To post C# code type the following: ```cs // code here ``` Get an example by typing $codegif in chat If your code is too long, post it to: https://paste.mod.gg/

Whiteboy•2y ago

        public static Dictionary<string, Equipment> Equipments { get; } = new();


        //Weapon properties
        private int DmgMin { get; set; }
        private int DmgMax { get; set; }
        private int HitRate { get; set; }
        private int CritChance { get; set; }
        private int CritDmg { get; set; }
        private int Rarity { get; set; }
        private int UpgradeLevel { get; set; }

        public static Dictionary<string, Equipment> Equipments { get; } = new();


        //Weapon properties
        private int DmgMin { get; set; }
        private int DmgMax { get; set; }
        private int HitRate { get; set; }
        private int CritChance { get; set; }
        private int CritDmg { get; set; }
        private int Rarity { get; set; }
        private int UpgradeLevel { get; set; }

so this is the bject

Kouhai•2y ago

these properties are private, they can only be accessed from within the instance.

Whiteboy•2y ago

does making them public make sense? or should i access them from the file i saved them?

Whiteboy•2y ago

it's other form i wanted to display upgrade level there

Kouhai•2y ago

Yes, it would be better to make them public Opening a file and reading from it each time you want these values is way more expensive than simply making them public and accessing them from outside

Whiteboy•2y ago

and update it every time u select new item do i need to make all public or just the one?

Kouhai•2y ago

Make the ones you want to access from outside public, change the rest to fields

Whiteboy•2y ago

Whiteboy•2y ago

still can't access it

Kouhai•2y ago

Equipments is a dictionary It doesn't have these properties, it has String keys and Equipment values

Whiteboy•2y ago

i have the key

Int32.Parse(button.Name)

Int32.Parse(button.Name)

but can't access the value

Kouhai•2y ago

How?

Whiteboy•2y ago

Equipment.Equipments.TryGetValue(Int32.Parse(button.Name), out UpgradeLevel);

Equipment.Equipments.TryGetValue(Int32.Parse(button.Name), out UpgradeLevel);

Error CS0103 The name 'UpgradeLevel' does not exist in the current context

Kouhai•2y ago

The error says exactly what needs to be done. UpgradeLevel wasn't declared anywhere A short hand way to declare it on one line would be

Equipment.Equipments.TryGetValue(Int32.Parse(button.Name), out var UpgradeLevel);

Equipment.Equipments.TryGetValue(Int32.Parse(button.Name), out var UpgradeLevel);

Whiteboy•2y ago

Error CS1503 Argument 1: cannot convert from 'int' to 'string what why not it doesn't convert how wasn't declared doesn't the TryGetValue take it from the dictionary? with the key "Int32.Parse(button.Name)" and the output should be the value

Kouhai•2y ago

The error is self explanatory, you're trying to use an int as a key when your dictionary uses string as it's keys

Kouhai•2y ago

please read this https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/out-parameter-modifier

out parameter modifier - C# Reference

Whiteboy•2y ago

SharedClass.UpgradeLvlValue = Equipment.Equipments[button.Name];

SharedClass.UpgradeLvlValue = Equipment.Equipments[button.Name];

fixed it works just fine the dict has key String nto int so and thsi had to be Equipment

public static Equipment UpgradeLvlValue { get; set; }

public static Equipment UpgradeLvlValue { get; set; }

Accord•2y ago

✅ This post has been marked as answered!

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How to access wanted property of a class instance? [Answered]