Statistics: Variable Types

Classifying Variables as Quantitative or Qualitative Data in samples represent variables which are used to statistically analyze patterns. For example, a sample of clinic patients would contain a list of their weight values. In this case weight is the variable. Quantitative or Qualitative All variables are either quantitative or qualitative based on the type of…

MVC: Custom Validation

Please see my other MVC articles. Using Custom Validation within a View While MVC provides many robust attributes within a Model to satisfy many validation scenarios, some situations exist which require custom logic to validate a user’s input. This article will illustrate how to implement your own routines to validate user input. First, create a…

T-SQL: Ranking Functions

Please see my other Database Development articles. Ranking Functions There are several new impressive advancements in the latest version of t-sql; this article will focus on “Ranking” functions. Prior to the release of SQL Server 2005 with its t-sql enhancements, working with blocks of related data was clunky at best. T-sql authors mostly relied on…

MVC: ADO.NET Entity Data Model

Please see my other MVC articles. Leveraging Visual Studio’s ORM Tool to Create a Data Layer Any application which interacts with a data source utilizes a data layer to perform Create, Read, Update, and Delete (CRUD) operations. Usually, this is quite an arduous tasks requiring endless maintenance to reflect changes in the data source as…

MVC: Accessing Form Values

Please see my other MVC articles. Leveraging the FormCollection object to retrieve user input. Collecting user input is one of the most common deliverables in Internet applications for which MVC provides a robust mechanism called the FormCollection. Beginning where my MVC 4 ADO.NET Entity Data Model article ended, I will demonstrate how to leverage FormCollection…

MVC: Using CSS Classes with Textboxes

Please see my other MVC articles. Leveraging CSS classes to Style Html Textboxes. As with any standard-compliant, cross-browser Internet applications, it is imperative code used to impose styling remain separate from the UI markup. Therefore, MVC supports the following ability for designers to add a CSS class to input controls which may be styled in…

MVC: Displaying Data Source Records

Please see my other MVC articles. Leveraging the Data Model to Retrieve Records for Display. As illustrated in MVC 4 ADO.NET Entity Data Model, Visual Studio now provides an extremely efficient ORM tool to quickly generate the data layer for CRUD operations. In this article, I will illustrate how to query and display data from…

MVC: Providing an Input Form

Please see my other MVC articles. Leveraging the Html form object to receive user input. Collecting user input is one of the most common deliverables in Internet applications for which MVC provides the Html object to automatically display HTML input control matching attributes of a data Model. First, I’ll create a new View which houses…

MVC: Class Diagram – Building a Class

Please see my other MVC articles. Leveraging a GUI tool to quickly construct a class. In this article I will demonstrate Visual Studio’s Class Diagram tool which allows developers to quickly construct a C# class with much less errors. First, I’ll create a new model class to demonstrate this feature. Next, I’ll invoke the tool.…

MVC: Bundles

Please see my other MVC articles. Instantiating Script and Style References Efficiently Including references to script and style tags has always been a tedious and time-consuming web development task. Now MVC 4 provides an alternate method by allowing developers to “bundle” files together into a single reference which may then be referenced to “render” them…