Passing Class object as ref to other class (C#)

[Studlyami]

Okay i create a class object in my "main" class. I want to pass this object by reference to another class. I am able to pass the ref of the object to the constructor, but i don't know how i am able to caputre it and use it.

class ClassA()
{
     A(ref ClassB ObjectOfClassB)
     {
            //save object of class be to use in another function
     }
 
     public void UseObject ()
     {
           ObjectOfClassB.Variable = 5;
     }
}
 
class ClassB()
{
      public int Variable;
}
 
MainClass //
{
     ClassB MyClassB = new ClassB();
     ClassA MyClassA = new ClassA(ref MyClassB); //so object value can get changed
}
 

i tried to create a ref object in the class, but it says i can't use that typename in a namespace, struct, class etc.

[r035198x]

Have a look at this example and try it again

using System;
class Foo {
    private Bar bar;
    public Foo(Bar bar) {
        this.bar = bar;
    }
    public void UseBar() {
        bar.DoWork();
    }    
    public static void Main(String[] args) {
         Foo foo = new Foo(new Bar());
         foo.UseBar();
    }
}
class Bar {
    public void DoWork() {
        Console.WriteLine("Bar has worked");
    }
}

[r035198x]

Have a look at this example and try it again

using System;
class Foo {
    private Bar bar;
    public Foo(Bar bar) {
        this.bar = bar;
    }
    public void UseBar() {
        bar.DoWork();
    }    
    public static void Main(String[] args) {
         Foo foo = new Foo(new Bar());
         foo.UseBar();
    }
}
class Bar {
    public void DoWork() {
        Console.WriteLine("Bar has worked");
    }
}

Forget that. I not had my Rooibos tea yet. This should be what you want.

using System;
class Foo {
    private Bar bar;
    public Foo(ref Bar bar) {
        this.bar = bar;
    }
    public void ChangeBar() {
        bar.setVal("Foo's value");
    }    
    public static void Main(String[] args) {
        Bar bar = new Bar("Mine");
         Foo foo = new Foo(ref bar);
         foo.ChangeBar();
         Console.WriteLine(bar.getVal());
    }
}
class Bar {
    private string MyVal;
    public Bar(String MyVal) {
        this.MyVal = MyVal;
    }
    public String getVal() {
        return MyVal;
    }
    public void setVal(String val) {
        MyVal = val;
}    }

[Studlyami]

that code worked great thanks!

[Plater]

The same way you would do it with an int or a string?
Declare a variable of if it:
myClass mc=null;
then in your constructor set "mc" to the referenced object you passed in.
For classes, I don't think you need the "ref" keyword (I've never had to use it?)