Category

C#

On Sitefinity Custom Widget Caching

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

Sitefinity is Caching too Hard! If you’ve done software development for any length of time, you’ve likely run into a caching issue. Caching is difficult to get right, but it is so beneficial that we work with it in nearly everything we do. In the case of Sitefinity, it performs caching all over the place. As a result, many aspects of the Sitefinity experience are greatly improved. If you disabled caching for a Sitefinity site altogether, the site would slow down immensely. Sitefinity, by its nature of being a Content Management System, stores the bulk of its content in the…

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Dynamic Content Detail Widget Templates in Sitefinity

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

Getting to Dynamic Content Data in Custom Code Behind In a previous post, I went over how you can easily create a custom code-behind C# class for any Widget Template in Sitefinity. Give that post a quick once-over, as this post builds upon that one. For built-in Sitefinity content items, accessing the data is pretty straightforward (see the previously-linked post): You grab the container, iterate over the items (even in the case of a single detail item), and then work with the data to make customizations to the page. For Dynamic Content Detail Widget templates, however, things work differently. You…

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Pub/Sub Part 1 : C# OAuth Authentication to Google Cloud Pub/Sub using a Service Account

By | C#, Cloud Platform, Google | No Comments

This is post 9 of 17 in the series “Google Cloud for the .NET Developer” If you are looking to consume Google Cloud services, you will need to authenticate. In my case, I was looking to use a service account created for a Pub/Sub application that I have in mind. I will walk you through creating a Service Account, downloading a key and authenticating with the Google Cloud Platform using a C# library. The first thing that you will need to do is log into the Google Cloud Platform console (create a project, if you don’t already have one). From…

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Read/Write data from/to USB thumb drive on a Windows IoT Core device

By | .NET, Blogs, C#, Fun, IoT, Microsoft, Multi-Device, News, Raspberry Pi, Visual Studio, Windows Universal Apps | One Comment

Currently, universal apps are sandboxed to the point of blocking you from reading/writing data files to a removable USB drive on Windows IoT Core devices. This post will show you a work around if you really need to do this. Now, understand that this is not for store apps. If you submit an app using this work around, it will likely get rejected. However, for internal projects, it will definitely work, and work well. This is a great way of reading application initialization data and writing log data in a test apparatus and laboratory setting. Particularly when a network or…

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C# Windows IoT Core Serial Communications with an ESP8266

By | Blogs, C#, ESP8266, git, Hardware, IoT, Microsoft, Multi-Device, News, Raspberry Pi, Visual Studio, Windows Universal Apps | No Comments

Windows IoT Core is great for connecting single board computers such a Pi2 to an ESP8266, via a serial link. The hardware for such a link can be found in my previous post here. The details for a basic serial communication C# framework are detailed in this post. If you have an ESP8266, there are numerous ways of communicating with them such as LuaLoader. However, I needed to communicate with my ESP8266 through a Pi2 running Windows IoT Core. This is part of a larger automated test project for an upcoming consumer project we’re developing. In this post, I’ll cover…

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Is an 80 Character Code Line Length Still Relevant?

By | C#, CSS, JavaScript, TypeScript, Visual Studio | One Comment

If you’ve spent any time reading about coding standards on the internet, you’ve probably come across the suggestion to limit lines of code to 80 characters and wondered if it’s still relevant today. The advise to limit lines to 80 characters is often connected to the historical limit of 80 characters in terminal windows. But what if your team is not subject to this constraint? Are there still any benefits to adopting this limitation? I tried living with it for a while and here are my takeaways. Growing pains Indentation When I first set out to try this style out,…

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Multilingual Publishing in Sitefinity

By | C#, Sitefinity | No Comments

Initially Publish your Content in a Non-Default Language Sitefinity has great multilingual publishing capabilities. From the perspective of an end-user / content manager, the backend offers up a myriad of methods to create content items both in the site’s default language as well as any other languages activated/enabled in the site itself. They’re all usually just one click away, and provide a good experience. But what about the development side of things? Say we have a custom widget that creates a content item, but the language either must be something apart from the default, or is user-selectable before creation occurs?…

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SMTP4Dev Local SMTP

Test Sending Email Without an SMTP Server

By | .NET, ASP.NET, C#, Microsoft, Tools | 2 Comments

When working on a project, I had the need to locally test the sending and formatting of an email from an application. The only downside is that I don’t have an SMTP server on my workstation, and I wasn’t about to start setting up IIS with all that ceremony. Luckily there are a couple tools that can help with this problem. Neptune The first tool I tried was Neptune. It doesn’t have source code available, but if you need a way to see if an email has been sent, it will show up with a notification in the system tray. You…

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Xamarin UITest Word Cloud

Mobile Testing in the Xamarin Test Cloud

By | Android, Android, C#, iOS, Testing, UITest, Visual Studio, Xamarin, Xamarin Test Cloud | No Comments

Mobile UI testing requires the same power as web UI testing. Certainly we need the basics: identify on-screen elements, automate, and make assertions. But that’s not going to be enough for teams building mobile apps under rapidly changing conditions; not with hundreds of new, evolving technology combinations. So what are the new rules? Here’s what we need, right-out-of-the-box…

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UISegmentedControl Text Color Change

Xamarin Quick Tip – Changing the UISegmentedControl Text Color

By | C#, iOS, Xamarin | No Comments

In iOS, the UISegmentedControl is a popular control. It allows you to present your data in an organized, tabbed fashion. When a segment is selected, the text on the segment is changed to the Background Color of the control, this text can sometimes become lost and difficult to read. To get around this problem, this post will show you how to change the UISegmentedControl Text Color when a segment is selected. UISegmentedControl Color Properties The UISegmentedControl has some direct color properties, I will outline the most important ones here. First we have the Tint Color, which is used as the…

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iPad and iPhone

Xamarin Quick Tip : Identifying if a device is an iPad or an iPhone using UserInterfaceIdiom

By | C#, iOS, Xamarin | No Comments

If you simply need to determine whether the device using your application is an iPad or iPhone in Xamarin.iOS without additional ceremony, look no further. The UserInterfaceIdiom can be used to solve this problem. Identification of the Device Type using UserInterfaceIdiom In order to identify the device type using the application. The following code can be used:

The UserInterfaceIdiom property will return any of the following enum values: CarPlay Pad (iPad) Phone (iPhone) TV Unspecified Alternatives for a more granular Device Identification If you require a more granular approach to device identification, such as distinguishing between the specific models of each…

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Software PWM at 0.35 Duty Cycle

Windows IoT Core: Software PWM

By | C#, Hardware, IoT, Microsoft, Raspberry Pi, Visual Studio, Windows, Windows Universal Apps | No Comments

One of the gaping holes in my opinion is the availability of PWM when working with Windows IoT Core on the Raspberry Pi. There are two approaches to solving this problem, one is with additional hardware to provide PWM functionality, the other is to achieve PWM with software. This article will focus on Software PWM. A Convenient Software PWM Library In poking around the web, I stumbled across this convenient library for Windows IoT Core. One of the implemented functions in this library is support for Software PWM. This library is also available as a package through NuGet. To demonstrate…

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Widget Template Code Customized the Easy Way

By | .NET, ASP.NET, C#, Sitefinity | One Comment

Sitefinity’s Widget Templates provide a quick and easy way to change how Sitefinity renders widgets, both for built-in content types as well as custom ones. In the backend, it’s just a hop, skip, and a jump away to Design > Widget Templates to access a majority of the templates where you can manipulate the HTML used to render them. Oftentimes, though, you have to do more. Let’s say that, when iterating over a list of news items in the “Titles only” template you want to add a CSS class to some of the items, but not others. This goes beyond…

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Two Wheel Robot on the floor

Windows IoT: Basic Control of a Two Wheel Robot

By | C#, Hardware, IoT, Raspberry Pi, Windows, Windows Universal Apps | One Comment

In my last article, we utilized a Raspberry Pi running Windows IoT Core to bi-directionally control a single DC motor with the help of the L293D chip. In this article, we will take things a bit further and have the L293D chip control two motors placed on a chassis to create a Two Wheel Robot. Materials Raspberry Pi 2 running Windows IoT Core Pi Cobbler with Ribbon Cable (optional) L293DNE chip Adafruit 2 Wheel Robot Chassis Kit (contains 2 DC motors) One 4xAA battery pack (to power the motors) Breadboard Various M-M Jumper wire   Wiring Details Wiring Details Cobbler 5v…

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Single DC Motor Control Wiring Diagram

Windows IoT : Bi-Directional DC Motor Control

By | C#, Hardware, IoT, Microsoft, Raspberry Pi | No Comments

In many IoT scenarios, it is possible that automation will be required to physically move something. In order to do this, you will need to utilize some type of motor. In this example, we will control a single DC Motor using the L293DNE chip and the Raspberry Pi 2 running the Windows IoT Core operating system. Materials Required Raspberry Pi 2 running Windows IoT Core Pi Cobbler with Ribbon Cable (optional) L293DNE chip DC Motor (6v motor) One 4xAA battery pack (to power the motor) Breadboard Various M-M Jumper wire Hardware Setup Wiring Details Cobbler 5v to the Breadboard Power Rail #1 Cobbler…

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Filtering data with the Search Bar

Xamarin Quick Tip – Adding a Search Bar to a UITableView in iOS

By | .NET, C#, iOS, Mobile, Multi-Device, Visual Studio, Xamarin | 2 Comments

A common bit of functionality required in a mobile application is including some type of search functionality in an application. Typically this takes the form of a search bar along with tabular results. In this article, I will walk you  through adding simple search functionality to a UITableView in iOS. Setting up the project Create a new blank iOS universal application with a storyboard. In the storyboard create a new UITableViewController and assign it the class name of FruitTableViewController. Name the table tblFruit. Finally, change the type of table cell to Basic, and assign it the reuse identifier of FruitCellId. If you have trouble setting…

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Swipe Left on Pineapple

Xamarin Quick Tip – Swipe Left To Delete

By | .NET, C#, iOS, Mobile, Multi-Device, Visual Studio, Xamarin | No Comments

In some projects, it may be requested to be able to swipe left to delete an item in a table. In order to implement this, there is a handy component called SwTableViewCell that provides this valuable functionality.  What is missing however, is decent documentation to get it up and running with Xamarin. In this article, I will walk you through adding this component to an already existing table view. Setting up the project The first thing we need to do is to build an application that has a table populated with some items. Create a new C#, Universal iOS application,…

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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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Accessing Sitefinity Roles in Code

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

When developing custom solutions in your Sitefinity application, you may need the ability to work with Sitefinity roles. As a developer, you would reach out to the RoleManager that Sitefinity provides, and access the roles from there. However, you may run into an issue where some roles, verified to be a part of your site, are not represented when working with the RoleManager. This post goes into this issue, and shows how to access all Sitefinity roles to work with. Basic Role Access Let’s say you want to list all available Sitefinity roles on your web site. The natural idea…

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Customizing Search Result URLs in Sitefinity

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

One of Sitefinity’s many features is its search capabilities. Using Lucene under the hood, Sitefinity indexes your site content, both built-in content types and dynamic content types, along with static HTML, and allows you to present organized results to the user. You can customized what is and isn’t indexed among other things. Most of the time, Sitefinity is smart enough to create search result URLs that take you directly to the content in question. If you have “/my-news” as your news page, for instance, a particular article URL might look something like “/my-news/2015/1/1/my-article-url”. The search indexer automatically takes the page…

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A Simple Natural Sort

By | .NET, C# | 5 Comments

If you’ve ever had to sort alphanumeric data, you’ve probably encountered the issue of sort order when letters and numbers are mixed. Here is a quick example:

The first set is using a standard ASCII sort which is sorted correctly, but not what most people expect–shouldn’t a2 come BEFORE a11? What they want is a natural sort which treats letters as letters and numbers as numbers rather than treating everything as an individual ASCII character. There are PLENTY of natural sort solutions out there and some may work better for your particular situation, but I came up with a simple natural…

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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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Creating a new Xamarin iOS Application

Xamarin Quick Tip : Add a Full Color Image to the Navigation Bar

By | .NET, C#, iOS, Visual Studio, Xamarin | No Comments

In iOS the Navigation Bar is not one of the easiest things to stylize. In a recent project, I needed to add a full color image of a logo on the left hand side of the Navigation Bar. Here is how I accomplished this requirement. Setting Up the Project Create a new Xamarin Blank iOS project in Visual Studio. I’ve named mine NavBarFullColorLogo. Creating the Storyboard Once the project has been generated. Add a new Empty Storyboard item to the project, name it Main.storyboard. Open the Info.plist file, and select Main.storyboard as the Main Interface. Open the AppDelegate.cs source file, and…

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Blank iOS Appliation

Xamarin Quick Tip : Setting a UI Table View Background Image

By | .NET, C#, iOS, Visual Studio, Xamarin | No Comments

Full-screen background images are an attractive design feature in many mobile applications. In this article, I will show you how to set an iOS table view background image using C# so you can achieve full screen backgrounds on your Table View Controllers in your application. Creating the Solution Open Visual Studio, and create a new Blank iOS Application. I’ve named mine BackgroundImage. Creating the Storyboard Once the solution has finished generating, add a new Empty Storyboard to the solution, name it Main.storyboard. Next we will need to assign the storyboard to our application launch sequence. To do this open the info.plist file, and under…

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