CODEWITHSUNDEEP
c#c#-4.0getset
user1192890
user1192890

Reputation: 25

Set and Get in C#

I just wanted to check if I understand correctly. The return value in get make the return value equal the private instance data. And the set value makes the value of the public value equal to the value of the private instance. Do I understand this correctly?

Upvotes: 1

Views: 281

Answers (2)

Alexei Levenkov
Alexei Levenkov

Reputation: 100620

Not always.

Get returns whatever developer thinks value of a property should be and set changes whatever the developer finds suitable to store the data. Often there is one-to-one mapping between property and internal field, but not always.

 int UltimateAnswer {get {return 42;}} // no internal field at all
 int Direct
 { 
     get {return _direct;}
     set {_direct = value;}
 }
 int WithConversion 
 {
    get {return _stored * 100;}
    set { _stored = value / 100;}
 }
 int AutoFiled {get;set;} // this one directly maps to automatically created field.

Upvotes: 5

Habib
Habib

Reputation: 223402

If you are property is defined as: 

    private int _value;
    public int Value
    {
        get { return _value; }
        set { _value = value; }
    }

Then yes, get is returning the value of the private field _value and set is setting up the _value but it could be different as well. 

 public int Value
        {
            get { return getCalculatedValue() } 
            set {
                if (_value > 0)
                {
                    _value = value;
                }
                else
                {
                    _value = -1;
                }
            }
        }

In the above example, get is returning you the calculatedValue from some function named getCalculatedValue() and set is validating the value for some condition and then setting it appropriately.

Upvotes: 4

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