What is an Indexer? Most C# programmers first use an indexer when working with an array. An array is used to store a number of similar, related variables under the same name, with each variable accessed using an index number provided in square brackets. For example: thirdItem = items[3]; Often… Continue reading
Operator Overloading So far in this tutorial we have created classes to represent real-world objects complete with their appropriate methods and properties. These objects have not required the implementation of arithmetic operators as this type of functionality was not appropriate. In this article, we will create a class that does… Continue reading
void CreateXmlFile(String xmlFilePath) { XmlTextWriter xmlWriter = new XmlTextWriter(xmlFilePath, Encoding.UTF8); xmlWriter.WriteStartDocument(true); xmlWriter.WriteStartElement(“Departments”); //Root Element xmlWriter.WriteStartElement(“Department”); //Department Element xmlWriter.WriteStartAttribute(“Name”); //Attribute “Name” xmlWriter.WriteString(“Development”); //Attribute Value xmlWriter.WriteEndAttribute(); xmlWriter.WriteStartElement(“Employees”); //Started Employees Element xmlWriter.WriteStartElement(“Employee”); //Started Employee Element xmlWriter.WriteStartAttribute(“Name”); //Attribute “Name” xmlWriter.WriteString(“Sabu C.Alex”); //Attribute Value xmlWriter.WriteEndAttribute(); xmlWriter.WriteStartAttribute(“Age”);//Attribute “Age” xmlWriter.WriteString(“28”);//Attribute Value xmlWriter.WriteEndAttribute(); xmlWriter.WriteString(“Sabu C.Alex is working as… Continue reading
Why Use Static Behavior? To date, the methods, properties and constructors that have been described in this tutorial have all related to instantiated objects of classes. In each case, these members have defined how the individual objects behave and how they maintain and manipulate their own state. Sometimes you will… Continue reading
Constructor Overloading In this article we will combine two techniques to allow a number of constructors to be defined for a single class. This gives the class the flexibility to construct objects in a variety of ways according to the manner in which they are to be used. Creating Overloaded… Continue reading
What is an Event? Each of these is similar because it allows a direct command to be given to a class or object within the flow of a program. This is similar to the early programming languages, which simply processed a sequence of commands and loops until complete. The sequential… Continue reading
Method Overloading One of the key features of object-oriented programming is polymorphism. Polymorphism permits objects to behave in different ways according to the manner in which they are used. One part of polymorphism is the ability for a method to behave differently according to the types and number of parameters… Continue reading
C# 4.0 introduces optional parameters to the language for methods, constructors, indexers and delegates. Optional arguments can be defined within a member’s signature but omitted from calls to that member, in which case default values are used instead. Often your source code will include several overloaded versions of one or… Continue reading
A new feature of C# 3.0 is the ability to create anonymous types. These interesting classes are defined for temporary use within class members. They allow the convenient encapsulation of read-only properties without the need to code a complete class. What is an Anonymous Type? Usually well-defined classes encapsulate the… Continue reading