can anyone explain me this piece code?

Question

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^^^