Scoping Example

Class1.cs

public class Class1
{
    // These are global variables
    // because they are declared outside of all methods inside of this class.
    // Therefore, they can be accessed in any functions defined in this class.
    public int GlobalIntVariable;

    public string GlobalStringVariable;

    public void Foo()
    {
        // Because these are local (or instance) variables,
        // they cannot be accessed outside of this method.
        int LocalInt;
        string LocalString;
    }

    public void Bar()
    {
        // These are local (or instance) variables
        // because they are created inside of this method
        // Therefore, they cannot be accessed outside of this method.
        int LocalIntVariable;
        string LocalStringVariable;

        // This will not work
        // unless I declare them in this method.
        LocalInt = 5;
        LocalString = "hello";
    }
    
    public void ThisMethod(string localString)
    {
        // However, this works
        // because it was passed via the parameters.
        Console.WriteLine(localString);
    }
}