Easy Example for Model View Presenter in arcphaea.cf - C# - CodeProject


mvp application c#

MVP is a user interface architectural pattern engineered that follows the separation of concerns in the presentation logic. It is derived from the MVC design pattern. In MVC, all the presentation logic is moved to the presenter, hence make it suitable for automated unit testing. Browse other questions tagged c# design-patterns mvp console-application or ask your own question. Blog What Every Developer Should Learn Early On. Implementing the Model View Presenter (MVP) design pattern Now let's go and implement the principles and concepts of the Model View Presenter (MVP) design pattern along with data binding in a multi-layer enterprise application using C# in arcphaea.cf

c# - How to Implement MVP in Console Application? - Stack Overflow

This article describes how to use a specific implementation of the MVP pattern, i. There is an example project which accompanies this article in the download code. The code which I will describe in this article can be found in that example project. That is neither a bug in the framework nor Visual Studio. I have now addressed that directly by adding a non-generic MvpForm. In addition to that, a developer from the community has also come up mvp application c# a workaround which enables designer support see N Meakins comment in the thread entitled Vs Designer Can not suport Generic Form below.

UPDATE 2: There is one other feature which I have now added to the framework that was long overdue - support for proper dependency injection. There are now two new projects in the source code, one for each of those dependency injection libraries. I have created another very small sample application called LicenceTracker which demonstrates the usage of the new forms and of the workaround suggested by N Meakins, as well as how to inject services into presenters using the new dependency injection features for Unity, mvp application c#.

Following that, I've included an explanation of how use the new dependency injection features. You can download that new sample application code here - Licence Tracker Application. As you can see, this model contains a single member which will be used to populate a ListBox on the main form which we will create. The next thing we need to create is an interface which will represent our View. This interface will implement the strongly-typed interface WinFormsMvp.

IViewwhich will be strongly-typed to our model MainViewModel :. The interface WinFormsMvp. And that interface implements the WinFormsMvp. IView interface, which gives us the following two members:. However, the Load event will be used in all of the forms and controls. The next thing which we need to create is the view. In this case, we will create a class that inherits from WinFormsMvp.

That class inherits from the standard System. Form class, i. Our new form will also implement the interface which we created above, IMainView. Once we implement that interface, our form will look something like this:. I will go into the rest of that class further on in the article. But for now, just take note of the way it inherits the strongly-type MvpForm class and implements the IMainView mvp application c#. We now need a presenter for our view.

For this Presenter, we are going to perform the binding by convention. You will see in the example project that the MainView form is created in a folder called Views. We will place the Presenter which we are about to create in a folder called Presenters. The way the convention-based binding works is mvp application c# look in the following places for a Presenter which has the same prefix as the View:.

In the example project, the Presenter called MainPresenter was created in the Presenters directory, which is one of the places that the convention-binder will look to find it. The Presenter looks like this:. But you do not need to worry about that, mvp application c#.

So long as you conform to the conventions i, mvp application c#. We can then hook up the two events which are members of our View by virtue of the IMainView interface and the IView mvp application c#, as discussed above. We then call the Exit method when the CloseFormClicked handler is invoked, mvp application c#.

The Presenter can then do mvp application c# it needs to do to organise state, and then calls a method on the View Exit to effect the closing of the form. The layout of the View will be very simple. It will merely comprise one ListBox and a UserControl. The type of the UserControl will be determined by which item in the ListBox is selected i. The contents of the ListBox will be populated during the OnLoad handler of the form. You will recall that we assigned an object to the Model property of the View in the Presenter, mvp application c#.

When the user mvp application c# an item in the ListBox, the SelectedIndexChanged handler instantiates an object of the type selected in the ListBox:. This presents me with the opportunity to demonstrate how to work with MvpUserControls ; a class in the framework which inherits from UserControl and is designed to be used in conjunction with the MVP pattern, mvp application c#.

First, we will need a Model and we will use a simple one which just displays a message:. Next, we will implement the members of the contract in the View note, for brevity I have not included all the code for the View here. You can see the rest of the code for the View in the download code :.

The next section covers that scenario. The framework supports the use of attributes to bind a View with a Presenter. For the purposes of demonstration, I have used a second UserControl which will perform the binding by way of attributes.

The way to do this is simply to decorate the class name of the UserControl with an attribute as so:. As you can see, the name of the Presenter does not comply with the convention described above, mvp application c#. As such, the only way to bind it is to use the PresenterBinding attribute. The full code for that UserControl and Presenter is included in the download code. The WinForms platform is still alive and kicking in many production environments.

The whole reason I wrote this framework is because I was tasked with supporting a system which included a raft of small WinForms applications, mvp application c#. WinForms MVP is ideal for smaller WinForms applications and will also be useful as a stepping stone for developers who want to learn how to program against the MVP pattern.

In this example, you can see that the interface IAddProductView does not contain any of our domain entity types, mvp application c#.

The properties which it contains are made up of the atomic parts of the various entities required to create a new Software product. They are View-centric in nature. However, the Mvp application c# view itself does not know about the Model. It exposes a set of properties via the IAddProductView interface, which enables the presenter to both:. This is a very pure example of the MVP pattern mvp application c# the Presenter knows about both the Model and the Viewbut neither the View nor the Model know about one another.

This will result in the view having a Model property. But, mvp application c#, you need to add the Model property yourself. Refer to the AddSoftwareType form in the LicenceTracker sample app to see this approach see the update paragraph near the top of the article for the download link.

The steps to implement this are as follows:. In this example, I am going to use the Unity dependency injection container to inject a service into a presenter. Before writing any code, you need to include the following libraries in your solution:.

With those libraries available to us, we need to create a UnityContainer object which we will use to register the types which we want to instantiate from the Interface which they will be implementing. The use of ContainerControlledLifetimeManager will create that service as a singleton. If you do not want it to be a singleton, use TransientLifetimeManager. Now that we have registered all of the types which our container will produce, we need to set the static Factory property of the PresenterBinder class.

That is easily done by passing the container to the constructor of the UnityPresenterFactory object which we assign to that static Factory property, mvp application c#.

Place the following code in the Main method of the Program class:.


Model View Presenter (MVP) design pattern and data binding


mvp application c#


Browse other questions tagged c# design-patterns mvp console-application or ask your own question. Blog What Every Developer Should Learn Early On. May 10,  · The Model View Presenter (MVP) is a design pattern that is particularly useful for implementing user interfaces in such a way as to decouple the software into separate concerns, such as those intended for data processing and storage (model), business logic, the routing of user commands, etc, thereby making more of your code available for unit testing. Implementing the Model View Presenter (MVP) design pattern Now let's go and implement the principles and concepts of the Model View Presenter (MVP) design pattern along with data binding in a multi-layer enterprise application using C# in arcphaea.cf