.NET Framework Interview Questions and Answers (547) - Page 18

Latest and authentic Interview questions. You can also post an interview question and win monthly prizes as well as gain community credit points.

547 records found.

Post |

Interview Experiences |

Interview FAQs |

Online Interviews |

Exclusive Questions

Get 650+ Questpond's Interview videos on discount

Can we have try block without catch?

Yes.

We can write Try { } Finally { } block. In this case exception will be thrown in try block if it is but code inside finally block will execute.

Here any exception in CallFirstMethod() or CallSecondMethod() will be handled by MainMethod() and finally block will execute always to perform any cleanups for respective methods.

public void MainMethod()

{

try

{

CallFirstMethod();

CallSecondMethod();

}

Catch(Exception ex)

{

//handle exception

}

}

publiv void CallFirstMethod()

 {

try

{

//code

}

finally

{

//cleanups

}

}

publiv void CallSecondMethod()

{

try

{

//code

}

finally

{

//cleanups

}

}

Can we have goto or return statement in finally block

Answer : No

If finally block is being run as a effect of exception thrown from try block it doesn't make sense of returning any thing or leaving the finally block.
If any exception occurs in finally block it will replace original exception in try block.

What are the different ways to deploy a assembly ?

Basically there are three different ways to deploy an assembly the are

1. Using a MSI Installer

2. Using a CAB archive

3. Using a XCOPY Command

What are User Controls and Custom controls?

Custom controls are control build entirely in code. The pro is that you can put them in libraries, add an icon to the toolbox and other fine control.

User controls are more easy to do, and in general is a way to encapsulate things to simplify other pages or when you need to use the same markup in several pages.

Suppose you have a DataTable having 100,000 rows and 50 columns. Now you've create array of perticular column values, how will you do that?

It's simple.
for C#

object[] arr = Array.ConvertAll<DataRow, object>(dataTable.Select(<criteria if any or leave blank>), (DataRow r) => r[<column-name>]);

for VB

dim arr as Object() = Array.ConvertAll(Of DataRow, Object)(dataTable.Select(<criteria if any or leave blank>), Function(r as DataRow) r(<column-name>));

difference between array and stack

There are two main differences between an array and a stack. Firstly, an array can be multi-dimensional, while a stack is strictly one-dimensional. Secondly, an array allows direct access to any of its elements, whereas with a stack, only the 'top' element is directly accessible; to access other elements of a stack, you must go through them in order, until you get to the one you want

What is difference between "String" and "string" ?

"string" is an alias for System.String . So technically, there is no difference between them. It's like int vs. System.Int32

What is the difference between Two Tier & Three tier Architecture ?

Two Tier Architecture: It is nothing but client server Architecture, where client will hit request directly to server and client will get response directly from server.
2-tier means 1) Design layer 2) Data layer

Three tier Architecture: It is nothing but Web Based application,here in between client and server middle ware will be there, if client hits a request it will go to the middle ware and middle ware will send to server and vise-versa.
3-tier means 1) Design layer 2) Business layer or Logic layer 3) Data layer

What is Cross-Page Posting?

Whenever you send a request to the server it sends request to the same page. Cross_page posting means it will send request to the another page. we can achieve. this through postback url property

What is Application State?

Application State is one of the Server Side State management Mechanism which stores application memory on the server rather than persisting data in the client side memory.

What is the difference between Pre-Render and Render events in ASP page execution.

Generally,

Pre Render - This event is used for modifying server controls just before sending them to client.

Render - This event is used to put the HTML output to the response stream

What is UDDI ?

UDDI - Universal Description, Discovery, and Integration (UDDI)

This is an XML based registry for businesses worldwide to list themselves on the Internet and a mechanism to register and locate web service applications.

It also provides a searchable directory of businesses and their Web Services. Hence this acts as a Service Broker that enables service requester's to find a suitable service provider.