C# (keyword: set, get, value)

set: A set accessor is used to assign a new value.(只是增加一些變數(pulbic)的方便性,asign時, 會跑進來)

get: A get property accessor is used to return the property value.(只是增加一些變數(pulbic)的方便性, 取值時, 會跑進來)

value: The value keyword is used to define the value being assigned by the set accessor.(即assign進來的值)

請看下面範例(來源:微軟官網, 如有侵權, 請來告知, 馬上刪除):

class TimePeriod

{
    private double seconds;

    public double Hours
    {
        get { return seconds / 3600; }
        set { seconds = value * 3600; }
    }
}


class Program
{
    static void Main()
    {
        TimePeriod t = new TimePeriod();

        // Assigning the Hours property causes the 'set' accessor to be called.
        t.Hours = 24;

        // Evaluating the Hours property causes the 'get' accessor to be called.
        System.Console.WriteLine("Time in hours: " + t.Hours);
    }
}

// Output: Time in hours: 24

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This is an example of a get accessor in an auto-implemented property

class TimePeriod2
{
    public double Hours { get; set; }
}