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What are events
What are events ? As compared to delegates events works with source and listener methodology. So listeners who are interested in receiving some events they subscribe to the source. Once this subscription is done the source raises events to its entire listener when needed. One source can have multipl... 2007-10-23, 6114👍, 0💬

How can we force all the validation control to run
How can we force all the validation control to run ? Page.Validate 2007-10-24, 6110👍, 0💬

What is ArrayList
What is ArrayList ? Array is whose size can increase and decrease dynamically. Array list can hold item of different types. As Array list can increase and decrease size dynamically you do not have to use the REDIM keyword. You can access any item in array using the INDEX value of the array position. 2007-10-23, 6108👍, 0💬

What are design patterns
What are design patterns ? Design patterns are recurring solution to recurring problems in software architecture. (A) Can you list down all patterns and their classification ? Note :- This is advanced question because anyone who asks to list down all patterns can only be crazy for what he is asking.... 2007-10-24, 6103👍, 0💬

What is an XMLReader Class
What is an XMLReader Class? It is an abstract class available from System.XML namespace. XML reader works on a read-only stream browsing from one node to other in a forward direction. It maintains only a pointer to the current node but has no idea of the previous and the next node. You can not modif... 2007-10-31, 6099👍, 0💬

What are wait handles ?
.NET INTERVIEW QUESTIONS - What are wait handles ?(What is a mutex object ?) Wait handles sends signals of a thread status from one thread to other thread. There are three kind of wait modes :- * WaitOne. * WaitAny. * WaitAll. When a thread wants to release a Wait handle it can call Set method. You ... 2009-12-22, 6089👍, 0💬

How does authorization work in ASP.NET
How does authorization work in ASP.NET? ASP.NET impersonation is controlled by entries in the applications web.config file. The default setting is “no impersonation”. You can explicitly specify that ASP.NET shouldn’t use impersonation by including the following code in the file &lt;identity imp... 2007-10-24, 6088👍, 0💬

What is a Interface
What is a Interface ? Interface is a contract that defines the signature of the functionality. So if a class is implementing a interface it says to the outer world, that it provides specific behavior. Example if a class is implementing Idisposable interface that means it has a functionality to relea... 2007-10-23, 6078👍, 0💬

What is the use of DISPOSE method
What is the use of DISPOSE method? Dispose method belongs to IDisposable interface. We had seen in the previous section how bad it can be to override the finalize method for writing the cleaning of unmanaged resources. So if any object wants to release its unmanaged code best is to implement IDispos... 2007-10-23, 6077👍, 0💬

What does virtual keyword mean
What does virtual keyword mean ? They signify that method and property can be overridden. 2007-10-23, 6077👍, 0💬

How will you do code reviews
How will you do code reviews ? The way in which code reviews are done change from person to person and also company to company. But the normally when a project is started project people define their architecture, coding standards etc in their design document. So before starting the code review you w... 2007-10-30, 6075👍, 0💬

What’s difference between Datagrid, Datalist and repeater
What’s difference between Datagrid, Datalist and repeater? WA Datagrid, Datalist and Repeater are all ASP.NET data Web controls. They have many things in common like DataSource Property, DataBind Method ItemDataBound and ItemCreated. When you assign the DataSource Property of a Datagrid to a DataSet... 2007-10-24, 6059👍, 0💬

What is cross cutting in AOP
What is cross cutting in AOP ? When one or many concerns span across module it is called as cross cutting. Example in our audit trail example we will probably need to audit trail for customer as well as supplier. So Audit trail can span across other objects also that is termed as cross cutting. Belo... 2007-10-24, 6058👍, 0💬

What is Absolute and Sliding expiration
What is Absolute and Sliding expiration? Absolute Expiration allows you to specify the duration of the cache, starting from the time the cache is activated. The following example shows that the cache has a cache dependency specified, as well as an expiration time of one minute. Cache.Insert("announc... 2007-10-23, 6056👍, 0💬

How many ways are there to implement locking in ADO.NET
How many ways are there to implement locking in ADO.NET ? Following are the ways to implement locking using ADO.NET 1. When we call gUpdateh method of DataAdapter it handles locking internally. If the DataSet values are not matching with current data in Database it raises concurrency exception err... 2007-10-24, 6054👍, 0💬

Which are the important namespaces during localization and globalization
Which are the important namespaces during localization and globalization? There are two most important namespaces: System.Globalization - contains classes that define culture-related information, including the language, the country/region, the calendars in use, the format patterns for dates, currenc... 2007-11-01, 6051👍, 0💬

What are different types of JIT ?
.NET INTERVIEW QUESTIONS - What are different types of JIT ? JIT compiler is a part of the runtime execution environment. In Microsoft .NET there are three types of JIT compilers: * Pre-JIT :- Pre-JIT compiles complete source code into native code in a single compilation cycle. This is done at the t... 2010-04-13, 6047👍, 0💬

What is the difference between Factory and Abstract Factory Patterns
What is the difference between Factory and Abstract Factory Patterns? Note: - This is quiet a confusing architect question especially in design pattern section. Interviewer can take you for a nice ride. So get the difference in your heart. First read the definition provided in the first question abo... 2007-10-24, 6045👍, 0💬

How can we make Windows API calls in .NET
How can we make Windows API calls in .NET? Windows API call are not COM based and they are invoked through Platform Invoke Services. Declare StringConversionType (Function | Sub) MethodName Lib "DllName" ([Args]) As Type ã StringConversionType is for what type of conversion should take place. Eithe... 2007-10-22, 6042👍, 0💬

What is the use of @ Register directives
What is the use of @ Register directives ? @Register directive informs the compiler of any custom server control added to the page. 2007-10-24, 6041👍, 0💬

How can we force the connection object to close after my datareader is closed
How can we force the connection object to close after my datareader is closed ? Command method Executereader takes a parameter called as CommandBehavior where in we can specify saying close connection automatically after the Datareader is close. pobjDataReader = pobjCommand.ExecuteReader(Comm andBeha... 2007-10-24, 6029👍, 0💬

What is DMAIC and DMADV
What is DMAIC and DMADV ? Six Sigma has two key methodologies DMAIC and DMADV. DMAIC is used to improve an existing business process. DMADV is used to create new product designs or process designs in such a way that it results in a more predictable, mature and defect free performance. DMAIC Basic me... 2007-10-30, 6018👍, 0💬

In What scenarios will you use a DOM parser and SAX parser
In What scenarios will you use a DOM parser and SAX parser? If you do not need all the data from the XML file then SAX approach is much preferred than DOM as DOM can quiet memory intensive. In short if you need large portion of the XML document its better to have DOM. With SAX parser you have to wri... 2007-10-31, 6017👍, 0💬

What is the difference between System.String and System.StringBuilder classes
What is the difference between System.String and System.StringBuilder classes? System.String is immutable; System.StringBuilder can have mutable string where a variety of operations can be performed. 2007-10-23, 6013👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML