Use the prism framework to re-implement Hello mvv1_first mvvm demoprepare for prism

In the previous blog post my first mvvm demo, debuglzq implemented a simple demo using mvvm. Next we will use the prism framework to implement it again to feel the convenience brought by Prism! For more information about PRISM, see the previous debuglzq blog prepare for prism.

Create a new project and add corresponding folders to the project. Because this project only has one view in mainwindow, no views folder or model is added, so there is no modes folder. We only add one viewmodels folder and add a mainwindowviewmodel class to it.

To use the delegatecommand and icationicationobject provided by the prism framework, you need to add a reference to prism. refer to the previous blog post.

The mainwindowviewmodel class is implemented as follows:

 Using  System;  Using Microsoft. Practices. Prism. viewmodel; //  Using Microsoft. Practices. Prism. commands; //  Namespace Mvvmpro1prism. viewmodels {  Class  Mainwindowviewmodel: icationicationobject {  //  Mainwindow has two inputs and one output, corresponding to three "data attributes"          Private   String  Input1;  Public   String  Input1 {  Get { Return  Input1 ;} Set  {Input1 = Value; raisepropertychanged (  "  Input1  "  );}}  Private   String  Input2;  Public   String  Input2 {  Get { Return Input2 ;}  Set  {Input2 = Value; raisepropertychanged (  "  Input2  "  );}}  Private   String  Output1;  Public   String  Output1 {  Get { Return  Output1 ;}  Set  {Output1 = Value; raisepropertychanged (  "  Output1  "  );}}  //  One button, a total of "command attributes"          Public Delegatecommand addcommand { Get ; Set ;}  Private   Void  Add () {output1 = Input1 + Input2 ;}  //  Ctor          Public  Mainwindowviewmodel () {addcommand = New Delegatecommand ( New  Action (ADD ));}}} 

Pay attention to the methods provided by the prism framework !! (Key Point !)

Add a binding in the view (same as the previous one ):

<Window X: class = "  Mvvmpro1prism. mainwindow  "  Xmlns = "  Http://schemas.microsoft.com/winfx/2006/xaml/presentation  "  Xmlns: x = "  Http://schemas.microsoft.com/winfx/2006/xaml  " Title = "  Mainwindow  " Height = "  350  " Width = "  525  " > <Grid. rowdefinitions> <rowdefinition Height = "  40  " /> <Rowdefinition Height = " 40  " /> <Rowdefinition Height = "  40  " /> <Rowdefinition Height = "  *  " /> </Grid. rowdefinitions> <textbox grid. Row = "  0  " Fontsize = "  26  " TEXT ="  {Binding input1}  " /> <Textbox grid. Row = "  1  " Fontsize = "  26  " TEXT = "  {Binding input2}  " /> <Textbox grid. Row = "  2  " Fontsize ="  26  " TEXT = "  {Binding output1}  " /> <Button grid. Row = "  3  " Content = "  Add  " Command = "  {Binding addcommand}  " /> </GRID> </WINDOW>

Using  System. windows;  Using  Mvvmpro1prism. viewmodels;  Namespace  Mvvmpro1prism {  ///   <Summary>      ///  Interaction logic of mainwindow. XAML  ///   </Summary>      Public   Partial   Class Mainwindow: window {  Public  Mainwindow () {initializecomponent ();  //              This . Datacontext = New  Mainwindowviewmodel ();}}} 

OK. Run is finished:

ProgramNormal operation, the prism framework does provide convenience for the mvvm mode! What we need to do is follow the method specifications provided by the prism framework to develop the WPF mvvm program correctly and quickly.

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This article uses the delegatecommand and icationicationobject provided by Prism to simplify mvvm writing.

Prism provides the following Hello World demo (yellow rectangle:

The directory structure is as follows:

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