What is the advantage of using DataSourceUpdateMode.OnPropertyChanged for databinding winform c# -

first see code

public class car : inotifypropertychanged     {         private string _make;         private string _model;         private int _year;          public event propertychangedeventhandler propertychanged;          public car(string make, string model, int year)         {             _make = make;             _model = model;             _year = year;         }          public string make         {             { return _make; }             set             {                 _make = value;                 this.notifypropertychanged("make");             }         }          public string model         {             { return _model; }             set             {                 _model = value;                 this.notifypropertychanged("model");             }         }          public int year         {             { return _year; }             set             {                 _year = value;                 this.notifypropertychanged("year");             }         }          private void notifypropertychanged(string name)         {             if (propertychanged != null)                 propertychanged(this, new propertychangedeventargs(name));         }     } 

this way binding

public partial class form1 : form     {         public form1()         {             initializecomponent();         }          bindinglist<car> ol;          private void form1_load(object sender, eventargs e)         {             car cartest = new car("ford", "mustang", 1967);             ol = new bindinglist<car>();             ol.add(cartest);              this.textbox1.databindings.add("text", ol, "make", true, datasourceupdatemode.onpropertychanged);             this.textbox2.databindings.add("text", ol, "make", true, datasourceupdatemode.onpropertychanged);             this.textbox3.databindings.add("text", ol, "make");              datagridview1.datasource = ol;         }          private void button1_click(object sender, eventargs e)         {             ol.where(d => d.make == "ford").first().make = "my ford000";         }      }  use `datasourceupdatemode.onpropertychanged` 1 textbox , did not use other textbox  this.textbox2.databindings.add("text", ol, "make", true, datasourceupdatemode.onpropertychanged); this.textbox3.databindings.add("text", ol, "make"); 

when change value in 1 textbox change reflected in other textbox without using datasourceupdatemode.onpropertychanged not understand advantage of datasourceupdatemode.onpropertychanged

even when change data in data source below way change reflected in textboxes.

ol.where(d => d.make == "ford").first().make = "my ford000";  please me understand right usage of `datasourceupdatemode.onpropertychanged` when , use. 

thanks

when adding binding in following way:

textbox3.databindings.add("text", ol, "make"); 

it uses datasourceupdatemode.onvalidation, can check here. so, if have validation rules control, underlying value won't updated if validation fails. on other side datasourceupdatemode.onpropertychanged update underlying source in case.