Win Surprise Gifts!!!
Top 5 Contributors of the Month
Post New Question
Subscribe to Interview Questions
What is a partial class?
Posted By :
Subhransu Sekhar Jena
Posted Date :
September 30, 2014
A class which can span multiple source files for the ease of development.
You can also find related Interview Question to
What is a partial class?
What is Partial Class?
Instead of defining an entire class, you can split the definition into multiple classes by using the partial keyword. When the application is complied, the C# complier will group all the partial classes together and treat them as a single class. There are a couple of good reasons to use partial classes. Programmers can work on different parts of a class without needing to share the same physical file. Also you can separate your application business logic from the designer-generated code.
Public partial class Employee
public void Method1()
Public partial class Employee
public void Method2()
Can we use two partial classes in different assemblies represent the same Class.
we cannot have two partial classes referring to the same class in two different assemblies (projects). Once the assembly is compiled, the meta-data is baked in, and your classes are no longer partial. Partial classes allows you to split the definition of the same class into two files.
partial classes is a compile-time phenomenon, not runtime. Classes in assemblies are by definition complete.
What is partial Class, Why do we use it?
Partial classes are one which can be defined in different files using partial keyword:
It is maily used for managing the code.Example: a windows form class is split into two files : Form1.cs and Form1.Designer.cs
What are partial Class?
Partial class are new feature in 2.0 Framework where single class is split among N-number of files,this is usefull when more than one developer wants to work on a same class,through class is split into N-number of files only one constructor will exist among all class files.When CLR complies the partial class after seeing Partial keyword CLR checks for class with same name and combines all partial class and compile it.
Example for partial class are all ASPX pages
Which namespace is the base class for .net Class library?
What is the difference between a Struct and a Class?
The struct type is suitable for representing lightweight objects such as Point, Rectangle, and Color. Although it is possible to represent a point as a class, a struct is more efficient in some scenarios. For example, if you declare an array of 1000 Point objects, you will allocate additional memory for referencing each object. In this case, the struct is less expensive.
When you create a struct object using the new operator, it gets created and the appropriate constructor is called. Unlike classes, structs can be instantiated without using the new operator. If you do not use new, the fields will remain unassigned and the object cannot be used until all of the fields are initialized.
It is an error to declare a default (parameterless) constructor for a struct. A default constructor is always provided to initialize the struct members to their default values.
It is an error to initialize an instance field in a struct.
There is no inheritance for structs as there is for classes. A struct cannot inherit from another struct or class, and it cannot be the base of a class. Structs, however, inherit from the base class Object. A struct can implement interfaces, and it does that exactly as classes do.
A struct is a value type, while a class is a reference type.
Can we call a base class method without creating instance?
Its possible If its a static method.
Its possible by inheriting from that class also.
Its possible from derived classes using base keyword.
What is Private Constructor? and it's use? Can you create instance of a class which has Private Constructor?
When a class declares only private instance constructors, it is not possible for classes outside the program to derive from the class or to directly create instances of it. (Except Nested classes)
Make a constructor private if:
1) You want it to be available only to the class itself. For example, you might have a special constructor used only in the implementation of your class' Clone method.
2) You do not want instances of your component to be created. For example, you may have a class containing nothing but Shared utility functions, and no instance data. Creating instances of the class would waste memory.
What event class gives a description about the type of a mousebutton pressed ?
How can you prevent a class from inheriting?
Using Sealed keyword
What is the difference between interface and abstract class ?
a class may inherit several interfaces, a class may inherit only one abstract class
What is the default access specifier for a top level class which are not nested into other class?
Differentiate between a template class and class template.
A generic definition or a parameterized class not instantiated until the client provides the needed information. It's jargon for plain templates.
A class template specifies how individual classes can be constructed much like the way a class specifies how individual objects can be constructed. It's jargon for plain classes.
What is an adaptor class or Wrapper class?
A class that has no functionality of its own. Its member functions hide the use of a third party software component or an object with the non-compatible interface or a non- object- oriented implementation.
Quick Links For Interview Questions Categories:
Find questions, FAQ's and their answers related to .NET, C#, Vb.Net, Sql Server and many more.
Now you can find lots of .NET, C#, Vb.Net, SQL Server,Windows, ASP.Net related Questions and their Answers here at www.dotnetspark.com. Our aim is to help you pass your certification Exams (MCP, MCSD, MCAD etc.,) with flying scores and get good name in your company.
So, Start looking our
section daily and improve your .NET Skills. You can also help others by posting Interview Questions and their Answers in this section.
Hall of Fame
Terms of Service
Tell A Friend