公开类的字段并添加属性？

Question

I have a silly problem and I am possibly going about this the wrong way.

I want to add a property to a class to change a field. I am thinking that this is not possible due to the Class level of protection.

SEE: Microsoft.SPOT.Hardware.PWM I want my code to modify this Class.

I want to change the Boolean:

bool invert;

in the initialisation of the Class:

PWM pwm = new PWM(Cpu.PWMChannel.PWM_4, 10, 0.5, true);

I want to be able to access the true variable and modify it. At will that is outside of creating a new instance.

I have tried:

public partial class PWM : Microsoft.SPOT.Hardware.PWM
{
private static bool invert;

protected static bool Invert
{
get { return invert; }
set { invert = value; }
}
}

I think this is a failure anyone have any ideas to expose this as a property?

Answer 1

protected modifier means that field can be accessed only from within the class or it's children.

If you want to expose the field, use public:

private static bool _invert;

public static bool Invert{

get { return _invert; }
set { _invert = value; }
}
}

Answer 2

Your question is not very clear - are you asking how to make a class field visible outside the class?

If so, you can either expose it via a property as you have already done:

    public static int PropertyName
    {
        get
        {
            return this._PropertyName;
        }

        set
        {
            this._PropertyName = value;
        }
    }

    /// <summary>
    /// privatefield for PropertyName 
    /// </summary>
    private static int _PropertyName;

Or you can simply declare the field as public. I would always go with the property so I can control what values and under what conditions the value can be set.

Alternative to base class:

    public Microsoft.SPOT.Hardware.PWM PWM {get;set;}

    public bool PwmBool
    {
        get
        {
            return false;
        }
        set
        {
            this.PWM = new PWM(Cpu.PWMChannel.PWM_4, 10, 0.5, value);
        }
    }