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I've been searching this for a while and I didn't found anything for my problem.
I have a integer:
private static int kills = 0;
I want a function to run when that variable changes. Like, it is 0 now. If it changes to 2, I want a function like OnVarChange that will be called, and that function OnVarChange will return the amount that was changed. In this case 2-0=2, so it will return 2.
Is this possible? How do I do it?
Hope you understand what I just said :p
You need to provide a change mechanism:
Add:
public static int Kills{
get{ return kills; }
set{
kills = value;
//change code here...
}
}
Only set using this public Kills property. Don't directly change the instance member kills if possible. But there is always an exception.
Make a property, which allows logic inside of it. That would be a good place to add this kind of functionality:
private static int kills = 0;
public static int Kills
{
get
{
return kills;
}
set
{
this.kills = value;
this.OnVarChange();
}
}
A better option would be to implement INotifyPropertyChanged, which is an interface that UI and other parts of the framework can pick up and act on.
public class X : INotifyPropertyChanged
{
private int kills = 0;
public int Kills
{
get
{
return kills;
}
set
{
this.kills = value;
this.OnPropertyChanged();
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged([System.Runtime.CompilerServices.CallerMemberName] string propertyName = "")
{
PropertyChangedEventHandler pc = this.PropertyChanged;
if (pc != null)
{
pc(this, new PropertyChangedEventArgs(propertyName));
}
}
}
static int Kills
{
get{
return kills;
}
set{
OnVarChange(kills,value);
kills = value;
}
}
Define a property for kills. Use this property to change value of kills. You can use set accessor of this property to call a method to detect change in variable kills.
