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From: Hardeeks_it_matrix
Message 2 in Discussion
New Message on MumbaiUserGroup
.net 2.0 ... help me out.. its urgent..
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Message 1 in Discussion
From:
Hardeeks_it_matrix
Dear friends,
In my current project I am using the CustomCollections with the help of
BindingList<T> generic class to store the database records instead using
DataSet objects as offline database identities.
Now I do have a large number of property classes each having a large number of
properties in it.
I want to implement the INotifyPropertyChanged interface in every property
class as follows:
The purpose to implement the INotifyPropertyChanged interface is I want to
inform the UI whenever any property change occurs and update the it accodingly.
Also I need to inform the ListChanged event of the my BindingList<T> collection
object using the PropertyChangedEvent of INotifyPropertyChanged interface. I
know that the PropertyChangedEvent automatically raises the ListChanged event
of the BindingList<T> object.
I want to maintain a flag whose value will be false whenever the collection
gets changed means any property value of any item in the collection gets
changed.
My code is like below:
public class Customer :INotifyPropertyChanged
{
private int number;
public int Number
{
get { return number; }
set { number = value;if(value!=number) OnPropertyChanged("Number");
}
}
private string name;
public string Name
{
get { return name; }
set { name = value;if(value != name) OnPropertyChanged("Name"); }
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
PropertyChanged(this, new
PropertyChangedEventArgs(propertyName));
}
}
Now what if my class has 100 properties then....
Is there any way out so I dont need to write the same code like below again and
again in each property's set method:
if(value != name) OnPropertyChanged("Name");
I dont want to write the above line for every property.
So is it possible to do this using Reflection and subscribe for the event
PropertyChanged for every property in the class in a single code block..
I have seen such a code months ago on any website but can't recall it right now
as that time I was not so serious and not knowing I might have to implement
this in future:)
Suggest me how to do this and put the code snippet if possible.
THANKS in ADVANCE.
Regards,
Hardeek Thakkar
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