Intelligence Podcast--Data binding basics

Data Binding Basics

Slider: Progress bar

<slider Name = "Slider1" ...></slider>

<textbox Text = "{Binding Value, elementname = slider1}" ></TextBox>

Write a data-bound class:

Class Person

{

}

Background:

person P1 = new person ();

Txtname.datacontext = p1;

Txtage.datacontext = p1;

Front:

<textbox Text = "{Binding Name}"

<textbox Text = "{Binding Age}"

Try not to manipulate the control directly, but create a new class , new instance, to set the control to bind DataContext

Txtname.datacontext = p1;

<textbox Text = "{Binding Name}"

INotifyPropertyChanged

<textbox TextChange

. NET built-in interfaces

Data binding detects if the DataContext implements INotifyPropertyChanged

If implemented, it will listen to propertychanged to learn about the property changes.

Class person:inotifypropertychanged

{

private int age;

public int Age

{

Get

{

return age;

}

Set

{

This.age = value;

if (propertychanged! = null)

{

PropertyChanged (This, new PropertyChangedEventArgs ("Age"));

}

}

}

Intelligence Podcast--Data binding basics