Files to set up Setting up of ODBC connection to OpenEdge requires /etc/odbcinst.ini to be update with the right drivers. Once that is done, OpenEdge can be accessed by either using a DSN or DSN-less connection string. It is assumed that you have set up and tested your SQL ODBC connection drivers. If not, Installing OpenEdge […]
C# events Events are very helpful in managing interactions between calling object and called object. In this example we capture the essence of c# events. Here’s how the discussion between two objects goes: Object COUNTER has an internal counter that can be incremented by AddOne() method Program initializes Object 1 and sets the threshold to […]
C# delegates C# delegates are awesome. What does delegation mean? Delegation, in simple terms, is to hand off a task. Let’s say John is the CEO and Matthew is a manager who works for John. Daryl and Mary are developers who work for Matthew. CEO John asks Manager Matthew to create for him an desktop […]
Trello JSON to C# objects Trello is an excellent issue management system, and much more. We use it for project management and allow transparency of operations to our customers. Exporting of Trello data is possible, and the output of the data is in JSON format. While JSON is easy to understand, data analysts require the […]
DB Context has changed I was working with an example in Entity Framework 5 and ran across this commonly seen issue that DB context has changed, especially after changing my Books model. The model backing the ‘BooksDbContext’ context has changed since the database was created. Consider using Code First Migrations This really mean that my […]
Read-only member in C# There are times when we want to create a Person object with firstname and lastname and then ensure that the names are not changeable. Here’s one way of creating read-only member. class Person { // create class members that are read only private readonly string _firstname; private readonly string _lastname; // […]
Protection level of a class is internal by default I was working with a young developer and had an fun discussion about protection levels. It is easy to forget default protection levels (access modifier). Classes are internal by default in .NET. Internal means that the class is visible to any code inside the assembly but […]
Someone asked me an interesting question. String is immutable. So how can we reassign a value to a string variable? Example of string immutable // assign a value to a string variable string firstname = “John”; // string has immutability, but we can still change the value? how? firstname = “Matt”; The computer allocates memory […]