WPF MVVM Architecture Step by Step (4) (Add bindings-Completely remove background code)

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Original: WPF MVVM schema Step by Step (4) (Add bindings-Completely remove background code)

The previous improvements have been pretty good, but we now know the background code problem, it is possible to remove the background code all? This is what the WPF binding and commands are doing.

WPF is known for its ultra-binding,commans and declarative programming. Declarative programming means that we can also use XAML to represent C # code compared to all written in C # code. Binding can help us connect 2 different WPF objects to send and receive data.

You see there are 3 steps to map the C # code now:

• Introduction : The first thing to do first is to introduce the Customerviewmodel namespace.
• Create object : The second thing is that we create an object of the Customerviewmodel class.
• binding Code : Finally, we bind the WPF UI and the view model object together.

Here is a table for showing C # code and XAML Code

Import	C # code	XAML Code
Import	Using Customerviewmodel;	Xmlns:custns= "clr- Namespace:customerviewmodel;assembly=custo Merviewmodel "
Create Object	Customerviewmodelobj = new Customerviewmodel (); Obj. CustomerName = "Shiv"; Obj. Amount = 2000; Obj. married = "Married";	<Window.Resources><custns:CustomerViewModel x:Key="custviewobj" TxtCustomerName="Shiv" TxtAmount="1000" IsMarried=”true”/>
Bind	Lblname.content = O.customername;	<Label x:Name="lblName" Content="{Binding TxtCustomerName, Source={StaticResourcecustviewobj}}"/>

You do not need to write the binding code in the background, we can choose a UI element, press F4 to select the properties to bind, this step will put the code into the XAML, of course, you can also write your own handwriting.

When specifying the mapping you can select StaticResource and then specify the bindings between the view model and UI elements.

　　

If you look at the backstage code in Xaml.cs, you will find that there is no glue code at all, and no code to convert and map. The only code that WPF uses is the canonical code that initializes the WPF UI.

 Public Partial class Mainwindow:window    {        public  MainWindow ()        {            InitializeComponent ();        }           }

WPF MVVM Architecture Step by Step (4) (Add bindings-Completely remove background code)