MVC Archives - Falafel Software Blog

Advanced Sitefinity Developer class in the Silicon Valley

By | Sitefinity | No Comments

We are very pleased and excited about offering the only west coast Progress Sitefinity Advanced Developer class at our training facility in Scotts Valley, CA (25 minutes from San Jose Airport SJC) at the heart of the Silicon Valley. This class offers backend developers the ability to develop a web application using Sitefinity CMS. You will receive extensive knowledge, on-class support and be taught by Sitefinity experts with 25 years of training experience.  Each attendee will receive a certificate of completion.  This class will enable you to confidently take the Advanced Sitefinity Developer Exam. This class is an official Progress Sitefinity…

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MVC Areas with ASP.NET Core

By | ASP.NET, ASP.NET Core, MVC, Web | One Comment

Areas in MVC allow you to separate your web application into segments, each with their own set of Controllers and Views, for better organization and intuitive access via routing. I decided to play with this MVC Areas feature in ASP.NET Core and thought I’d share my experience in case it might help others using this feature. My first attempt to use this was to simply add the Areas folder to the root of my application, with a subfolder called Admin with the associated folders for Controllers, Models, and Views: I added a simple AdminController to simulate a separate Administration section…

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QuerySelectorAll Error on BeginFormSitefinity

By | ASP.NET, MVC, Sitefinity | No Comments

When developing a custom form on Sitefinity MVC widgets, the HTML helper method Sitefinity provides, Html.BeginFormSitefinity(), is a very handy resource. You wrap your form elements up inside the whole thing, along with a submit button, and you can point it at an HttpPost Action on your custom MVC widget controller with ease. When you’re putting your form widget on a master page, however, you can run into a rather vague JavaScript error that prevents your form from submitting correctly. The error in JavaScript brings up something about querySelectorAll and you’re left scratching your head as to what you did…

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Preserve Feather Content Block HTML Formatting

By | JavaScript, MVC, Sitefinity | 2 Comments

Feather widgets in Sitefinity are a significant improvement over traditional Sitefinity widgets. They are more responsive, provide better tooling, and are easier to customize (both the main area as well as designer views). However, I recently encountered an issue with one of the basic default Feather widgets included with more recent versions of Sitefinity. In this post we’re going to see how to modify this behavior, so that when working with the Feather Content Block widget we have it behave the way we would like. This post also serves a second purpose: Introducing how to modify a built-in Sitefinity Feather…

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Lock Down Content Widgets with UrlKeyPrefix

By | MVC, Sitefinity | No Comments

When you’re working with your content in Sitefinity, a very common practice to display said content is to provide a list and details view. On the page (or pages) containing these views, it is often good to provide a sidebar to provide for additional navigation functionality when users are browsing your content. News articles, for example, can support Tags to help classify stories into various buckets. It’s also nice for users to see a concise list of stories on the sidebar in addition to the more fleshed-out list that the page primarily shows. To accomplish this in Sitefinity appears trivial…

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Using HandleUnknownAction in MVC Widgets

By | .NET, ASP.NET, C#, MVC, Sitefinity | No Comments

Sitefinity’s MVC widgets are fantastic. They allow untold amounts of customization and enable you to create an MVC framework as complex or as simple as you need. There is a caveat to using them, however: Because the controllers are typical ASP.NET MVC controllers, going to particular pages on your site might make them disappear! There is a simple workaround for this problem, and with this information you can ensure that your Sitefinity MVC widgets consistently display no matter what current state your web site is in. The Problem Say you have a simple custom MVC widget that has a single…

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Working with Hybrid Forms in Sitefinity Widgets

By | .NET, C#, MVC, Sitefinity | No Comments

Throughout the course of web development, you often find yourself in a situation where you need data input from your user. Scenarios range from a simple contact form, to something as complex as a multi-part job application. In either case, Sitefinity offers multiple solutions. The easiest solution, for the simpler forms such as the aforementioned contact form, is to use Sitefinity’s built-in Forms capabilities. Much like with their pages, Sitefinity Forms provide a very simple, powerful way to create and customize even more complex forms for your site. The resulting data is then stored in Sitefinity, and can be set…

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Data Annotations & Entity Type Configuration

By | .NET, C#, News, Web | 3 Comments

We can replace Data Annotations with Entity Type Configuration to make our classes look clean and simple. Majority of developers prefer using View Models for CRUD operations leaving no reason to have Data Annotations defined in our model classes. This article will show you how to replace Data Annotations with Entity Type Configuration when using Entity Framework Code-First.

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Falafel Partners with New Venture Software to Provide Additional Custom Development Support

By | .NET, MVC, News | No Comments

Falafel is very happy to announce that we have formalized a partnership with New Venture Software, a boutique custom software development and consulting company. The partnership between Falafel and New Venture Software is built on a long history that started back in 2006. Moving forward, we are now able to extend our capabilities around .NET, MVC, WPF, HTML5, iOS development Objective C and Swift as we work side-by-side on select customer projects as needed.

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Child Actions in ASP.NET MVC

By | MVC | 4 Comments

Child Actions are the action methods which can be invoked within the view. This is used to work with the data in the view, which are not related to the main action method. For example, if you want to create a data driven widget in the view using data that is not related to the main action method, you will need to use the child action method. In ASP.NET MVC any action can be used as a child action. However, to use an action only as a child action and attribute it with the ChildActionOnly. It will make sure the…

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Check User exists in a Role in ASP.NET Identity 2.0

By | MVC | 8 Comments

ASP.NET MVC5 uses Identity 2.0 to manage the users and their roles. There may be scenario to check whether the currently logged in user or any user with the id exists in the given role or not, and checking can be done either in the controller class or in any other class of the application. Check for the currently logged in user In a controller you can find whether the currently logged in user exist in a role or not by using User property of the controller class. Type of the User property is IPrincipal and it has a Boolean…

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Seed the database with initial Users in MVC 5

By | MVC | 9 Comments

In MVC 5 applications you may want to seed the database with initial users for various reasons. You may want default users and roles added as part of the application. In this post, we will take a look at how to  seed the database with default users. The MVC 5 application uses ASP.Net Identity 2.0 to manage users, roles and identities. ASP.Net Identity 2.0 uses the Entity framework code first approach to create a database. To seed the database, first you need to enable migration on the database. To enable migration, in the package manager console run the command enable-migrations…

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Custom Action Filter in ASP.NET MVC 5

By | MVC | 8 Comments

ASP.NET MVC 5 provides five different kinds of Filters. They are as follows: Authentication [Introduced in MVC5] Authorization Action Result Exception Filters are used to inject logic at the different levels of request processing. Let us understand where at the various stages of request processing different filters get applied. Authentication filter runs before any other filter or action method Authorization filter runs after Authentication filter and before any other filter or action method Action filter runs before and after any action method Result filter runs before and after execution of any action result Exception filter runs only if action methods,…

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Customize the MVC 5 Application Users’ using ASP.Net Identity 2.0

By | MVC | 15 Comments

In ASP.Net MVC 5.0, users and their roles are managed using ASP.Net Identity 2.0. By default when you create a new account email, password and confirm password are required as it’s shown below. You may come across a requirement to modify the required fields for a particular application user. For example, along with the email and password, you want to save the user’s age, country and city. In this post we will learn to modify the user information. Basically there are the three steps involved in this: Modify the ViewModel To modify the ViewModel, you should change the RegisterViewModel classin…

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Three steps to use jQuery UI in ASP.NET MVC 5

By | MVC | 19 Comments

Many developers struggle to work with jQuery UI in an ASP.NET MVC application. In this post, I will show you three steps required to start working with jQuery UI in an ASP.NET MVC application. At the end of the post we will take a look at working with the autocomplete widget. The following three steps will let you work with jQuery UI in an ASP.NET MVC application: Step 1: Add the jQuery UI Reference Add the jQuery UI reference into the project using the NuGet manager. Once this is done, you should find the reference added in the Content folder…

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Work with ASP.NET MVC 5 Areas from different projects

By | MVC | 14 Comments

While working on an ASP.NET MVC 5 application, I came across a requirement to use an Area from one project in another project. For example: I have a project A and a project B. I need to use an Area which is part of project B inside of project A. In this post I will discuss how this can be achieved. To start with, let us say I have an MVC project AreaDemo with the structure as follows: Right now there is one area DataAnalysis in the project. To demonstrate multiple areas, I have created multiple ActionLink in the layout…

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Types of ASP.NET MVC Views

By | MVC, News | 4 Comments

I have found that many entry level developers get confused by the various kinds of Views in ASP.NET MVC Applications. In this post I am trying to clarify these different types of Views. The type of ASP.NET MVC View depends on the way the data is passed to it from the Controller. There are three ways data can be passed to Views from a Controller. They are as follows: Using ViewBag or ViewData Using object of the model which is strongly typed Using any dynamic type value On the basis of data transfer mechanism ASP.NET MVC views are categorized as…

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Server Paging, Sorting, and Filtering with Kendo DataSourceRequest

By | ASP.NET, C#, Kendo UI, MVC, Telerik, Web | 12 Comments

As you would expect, the Kendo UI Grid and DataSource work extremely well together and give you paging, sorting, and filtering right out of the box.  By default, the DataSource will do all of this on the client which is fine for small sets of data, but it becomes a huge performance issue when you are dealing with thousands of records.  In this case, we need to move this work to the server. I typically do not endorse using the Kendo MVC Extensions for large applications (you get more flexibility and a cleaner architecture when you write your own Javascript),…

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HTTP GET array param to ASP.NET MVC with Kendo DataSource

By | .NET, ASP.NET, JavaScript, Kendo UI, MVC | No Comments

This post is inspired by a recent conversation with one of my colleagues here. He had the following requirements: ASP.NET MVC controller (not Web API) Kendo DataSource reading with HTTP GET Controller action accepts a list of values So, something like this:

This is an awkward little corner case. Change any one of the requirements and everything will work just fine. Fresh out of the box, Web API understands sending multiple values in the query string (at least, with the right controller action method signature). MVC controllers understand arrays if they’re posted in the body of the request,…

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Domain-Driven Design with ASP.NET MVC

By | Uncategorized | 2 Comments

I’ll be speaking on about Domain-Driven Design, or DDD, with ASP.NET MVC at this year’s FalafelCON event, taking place 20-21 September 2014 in San Francisco.  The event is limited to the first 200 people to register, so if you’re interested in attending, you may want to register today.  DDD is a big topic, and one I’ve been interested in for many years now.  In fact, I recently published a course on DDD Fundamentals with Julie Lerman for Pluralsight that covers the basics.  If you have a chance to watch it, let me know what you think via the course’s discussion…

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Include CSS and JavaScript Resources in Sitefinity MVC Widgets

By | Sitefinity | 3 Comments

When Sitefinity added MVC in version 5.1, it was a real pleasure to create widgets the “new way” via MVC. What made it so unique is that Web Forms was still offered in the platform for developers to use as an alternative or hybrid approach, so you can mix Web Form and MVC controls on the same page. After the honeymoon stage was over, the community started to realize there was some serious limitations to the MVC implementation that made it nearly impossible to create pure MVC pages in the real world. Some examples were not being able to use your own…

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