can anyone explain me this piece code?

Arvind Chourasiya

10y852.NET

public class Cat : Entity

{

private string _name;

public string Name

{

get { return _name; }

set

{

if (value.Equals(_name))

{

return;

}

_name = value;

OnPropertyChanged();

}

Entity class:

public void OnPropertyChanged([CallerMemberName] string propertyName = null)

{

var handler = PropertyChanged;

handler?.Invoke(this, new PropertyChangedEventArgs(propertyName));

}

So here,

1) ^^^

private string _name;

public string Name

{

get { return _name; }

set

{

if (value.Equals(_name))

{

return;

}

_name = value;

OnPropertyChanged();

}

2)^^^

public string Name{get;set}

so what is the difference between 1 and 2. can replace cat class all code 1^^^ with code 2^^^

3 Replies

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Lida Weng10y ago
Accepted answer
hi as said 1) will be useful if you want to track value changes, and you will implement the change event in method OnPropertyChanged() in code 1).
If no need of tracking code changes, code 2) is the way to go. using default {get;set;} is a basic C# feature (i.e. no need to create _name variable).
cheers.
Arvind Chourasiya10y ago
Thank you. i have replaced code 1) with code 2) It's working fine but is there any difference will come in my project functionality if i replace code 1 with code 2.which one you will recommend?
Lida Weng10y ago
1. if(value.Equals(_name))
2. {
3. return;
4. }
Code above in your 1) indicates that do not do anything if the new value assigned is the same to the existing value; otherwise call the OnPropertyChanged() method so the code in OnPropertyChanged() can take actions;
Code in 2) is simple a getter and setter that behave same like the code below:
1. privatestring_name;
2. publicstringName
3. {
4. get{return_name;}
5. set{_name=value;}
6. }