Daily Interview Questions #4: What is the difference between Abstract Method and Virtual Method?

Abstract Method:

Abstract method specified by “abstract” keyword.

An abstract method contains no definition. Derived class must implement the abstract methods.

Object cannot be created for abstract class. That is abstract class can not be instantiated.

Virtual Method:

Virtual method specified by “virtual” keyword.

Used to implement “Run-Time” polymorphism.

Derived classes not forced to implement the “Virtual” methods that is available in Base class.

The process of redefine the virtual method in a derived class called as “Method Overridding”.

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Daily Interview Question #3: What are the MEPs available in WCF?

              MEP is the short form for Message Exchange Pattern. In Windows communication foundation, 3 types of Message exchange patterns are allowed. They are:

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Daily Interview Question#2 : What are the events will be fired when the “gridview.DataBind()” method called?

When the Gridview.DataBind() method called, below events are fired in the following order:

1. Databinding
2. RowCreated  (Called for Each row)
3. RowDatabound (called for each row)
4. DataBound

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Daily Interview Question #1 : What is Abstract Class?

 

An abstract class is like a class with some future. That is:

i. It contains at least one or more abstract method(s).

ii. It will always act as a base class.

iii. It cannot be instantiated. That is not possible to create instance for that class.

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Grid View : Binding Dropdown inside a Gridview

In this gridview tutorial, I’m going to explain how to bind a drop down list with in a gridview. The drop down list located inside gridview in a “Template” Column. Paste the below code in an aspx page.

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