Tag Archives: OOP

Determine whether two lists contain the same sequences of objects in different orders in C#

Posted on April 24, 2018 by Rod Stephens

The SequenceEqual method determines whether two IEnumerable sequences contain the same objects in the same order. There is a simple way to determine whether the lists contain the same objects in different orders: sort the objects and then call SequenceEqual. … Continue reading →

Posted in LINQ, lists, miscellany, OOP | Tagged C#, C# programming, equality, equatable, example, example program, IEquatable, LINQ, lists, miscellany, OOP, sequences, unordered sequences, Windows Forms programming | Leave a comment

Determine whether two lists contain the same sequences of objects in C#

Posted on April 23, 2018 by Rod Stephens

The IEnumerable interface provides a SequenceEqual method that determines whether two IEnumerable sequences contain the same objects. Normally, it uses reference equality so it considers two objects equal only if they refer to the same instance. However, if the objects … Continue reading →

Posted in lists, miscellany, OOP | Tagged C#, C# programming, equality, equatable, example, example program, IEquatable, lists, miscellany, OOP, sequences, Windows Forms programming | 2 Comments

Draw a scrolling family tree in C#

Posted on January 17, 2017 by RodStephens

The example Draw a family tree in C# shows how to draw a family tree. Unfortunately if the tree is too big, you can’t make the form big enough to display it all. One solution would be to use smaller … Continue reading →

Posted in algorithms, classes, generic, graphics, OOP | Tagged algorithms, AutoScroll, C#, C# programming, classes, example, example program, family tree, generic, generic classes, graphics, MouseDown, MouseMove, nodes containing pictures, OOP, PictureNode, scroll bars, scrolling family tree, tree containing pictures, TreeNode, trees, Windows Forms programming | 1 Comment

Clone lists and arrays of objects in C#

Posted on September 28, 2016 by Rod Stephens

This is the last post I’ll write about clones, at least for a while. Some collection classes can already make clones. For example, an array can clone itself, although the result is always a shallow clone. This example shows how … Continue reading →

Posted in algorithms, OOP, syntax | Tagged algorithms, C#, C# programming, clone, clone arrays, clone collection, clone lists, clone object, copy object, example, example program, OOP, syntax, Windows Forms programming | 1 Comment

Clone serializable objects in C#

Posted on September 26, 2016 by Rod Stephens

If a class is serializable, then you can create a deep clone of an object from that class by serializing it and the deserializing it. This example uses the following code to define a generic extension method that clones objects … Continue reading →

Posted in algorithms, OOP, syntax | Tagged algorithms, C#, C# programming, clone, clone object, copy object, deep clone, example, example program, OOP, serialization, shallow clone, syntax, Windows Forms programming | 5 Comments

Use MemberwiseClone the ICloneable interface in C#

Posted on September 20, 2016 by Rod Stephens

The example Clone objects in C# explains how to give a class a Clone method that makes copies of its objects. This example makes two changes: it implements the ICloneable interface and it uses MemberwiseClone to simplify the cloning code. … Continue reading →

Posted in algorithms, OOP, syntax | Tagged algorithms, C#, C# programming, clone, clone object, copy object, deep clone, example, example program, ICloneable, ICloneable interface, MemberwiseClone, OOP, shallow, syntax, Windows Forms programming | Leave a comment

Clone objects in C#

Posted on September 19, 2016 by Rod Stephens

A clone of an object is a copy of that object. There are two kinds of clones: shallow and deep. A shallow clone shares all of the same values as the original object, even if some of those values are … Continue reading →

Posted in algorithms, OOP, syntax | Tagged algorithms, C#, C# programming, clone, clone object, copy object, deep clone, example, example program, OOP, shallow clone, syntax, Windows Forms programming | Leave a comment

Provide multiple inheritance in C#

Posted on May 12, 2016 by Rod Stephens

Sometimes you might want a class to inherit from more than one parent class. For example, you might define a Vehicle class that has vehicle properties such as MaxSpeed, and a Domicile class with house-like properties such as SquareFeet. You … Continue reading →

Posted in inheritance, interfaces, OOP | Tagged C#, C# programming, example, example program, inheritance, interface inheritance, interfaces, multiple inheritance, OOP, Windows Forms programming | 1 Comment

Define and implement an interface in C#

Posted on May 11, 2016 by Rod Stephens

(This example doesn’t do anything. It just shows how to define an interface.) An interface defines properties, methods, and events for a class but doesn’t provide an implementation for them. A class that implements the interface must provide code for … Continue reading →

Posted in interfaces, OOP | Tagged C#, C# programming, define interface, example, example program, implement interface, interface, interfaces, OOP, Windows Forms programming | Leave a comment

Override a parent class method in C#

Posted on May 3, 2016 by Rod Stephens

One of the coolest features of object-oriented programming is virtual methods. If a parent class declares a method as virtual, a child class can provide a new implementation for the method. When the program calls the method for a child … Continue reading →