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What are benefits and limitations of using Hidden frames?
.NET INTERVIEW QUESTIONS - What are benefits and limitations of using Hidden frames? Following are the benefits of using hidden frames: * You can cache more than one data field. * The ability to cache and access data items stored in different hidden forms. * The ability to access JScript® variable v...
2009-07-14, 5073👍, 0💬

What does address of operator do in background? any example.
What does address of operator do in background? any example. The AddressOf operator creates a delegate object to the BackgroundProcess method. A delegate within VB.NET is a type-safe, object-oriented function pointer. After the thread has been instantiated, you begin the execution of the code by cal...
2009-03-13, 5062👍, 0💬

what is a service class
what is a service class?
2007-11-04, 5062👍, 0💬

What are major difference between classic ADO and ADO.NET
What are major difference between classic ADO and ADO.NET ? Following are some major differences between both ? As in classic ADO we had client and server side cursors they are no more present in ADO.NET. Note it's a disconnected model so they are no more applicable. ? Locking is not supported due t...
2007-10-24, 5060👍, 0💬

Windows authentication and IIS
Windows authentication and IIS If you select windows authentication for your ASP.NET application, you also have to configure authentication within IIS. This is because IIS provides Windows authentication. IIS gives you a choice for four different authentication methods: Anonymous,basic,digest and wi...
2007-10-24, 5056👍, 0💬

What is an application domain
What is an application domain? Previously “PROCESS” where used as security boundaries. One process has its own virtual memory and does not over lap the other process virtual memory; due to this one process can not crash the other process. So any problem or error in one process does not affect the ot...
2007-10-23, 5056👍, 0💬

What is the difference between a HAVING CLAUSE and a WHERE CLAUSE
What is the difference between a HAVING CLAUSE and a WHERE CLAUSE? You can use Having Clause with the GROUP BY function in a query and WHERE Clause is applied to each row before they are part of the GROUP BY function in a query.
2007-10-25, 5055👍, 0💬

How do I send email message from ASP.NET
How do I send email message from ASP.NET ? ASP.NET provides two namespaces System.WEB.mailmessage classand System.Web.Mail.Smtpmail class. Just a small homework create a Asp.NET project.
2007-10-24, 5052👍, 0💬

What is ReaderWriter Locks ?
.NET INTERVIEW QUESTIONS - What is ReaderWriter Locks ? You may want to lock a resource only when data is being written and permit multiple clients to simultaneously read data when data is not being updated. The ReaderWriterLock class enforces exclusive access to a resource while a thread is modifyi...
2009-12-29, 5051👍, 0💬

What is Tracing in ASP.NET
What is Tracing in ASP.NET ? Tracing allows us to view how the code was executed in detail.
2007-10-24, 5051👍, 0💬

What are different types of JIT
What are different types of JIT ? Note :- This question can only be asked when the interviewer does not know what he wants. It was asked to me in one of interview and for 15 minutes he was roaming around the same question in order to get answer from me (requirement was for a simple database project)...
2007-10-22, 5051👍, 0💬

What are the steps to create a windows service in VB.NET
What are the steps to create a windows service in VB.NET? Windows Services are long-running executable applications that run in its own Windows session, which then has the ability to start automatically when the computer boots and also can be manually paused, stopped or even restarted. Following are...
2007-10-24, 5050👍, 0💬

What is Suspend and Resume in Threading
What is Suspend and Resume in Threading ? It is Similar to Sleep and Interrupt. Suspend allows you to block a thread until another thread calls Thread.Resume. The difference between Sleep and Suspend is that the latter does not immediately place a thread in the wait state. The thread does not suspen...
2007-10-22, 5050👍, 0💬

What are the various objects in Dataset
What are the various objects in Dataset ? Dataset has a collection of DataTable object within the Tables collection. Each DataTable object contains a collection of DataRow objects and a collection of DataColumn objects. There are also collections for the primary keys, constraints, and default values...
2007-10-24, 5048👍, 0💬

How can we call methods in remoting Asynchronously
How can we call methods in remoting Asynchronously All previous examples are a synchronous method calls that means client has to wait until the method completes the process. By using Delegates we can make Asynchronous method calls.
2007-10-23, 5047👍, 0💬

How can you increase SQL performance
How can you increase SQL performance ? Following are tips which will increase your SQl performance Every index increases the time takes to perform INSERTS, UPDATES and DELETES, so the number of indexes should not be too much. Try to use maximum 4-5 indexes on one table, not more. If you have read-on...
2007-10-25, 5044👍, 0💬

What is a monitor object?
.NET INTERVIEW QUESTIONS - What is a monitor object? Monitor objects are used to ensure that a block of code runs without being interrupted by code running on other threads. In other words, code in other threads cannot run until code in the synchronized code block has finished. SyncLock and End Sync...
2009-12-22, 5043👍, 0💬

What is the namespace in which .NET has the data functionality classes
What is the namespace in which .NET has the data functionality classes ? Following are the namespaces provided by .NET for data management System.data This contains the basic objects used for accessing and storing relational data, such as DataSet,DataTable, and DataRelation. Each of these is indepen...
2007-10-24, 5041👍, 0💬

What is Multi-tasking
What is Multi-tasking ? It’s a feature of modern operating systems with which we can run multiple programs at same time example Word, Excel etc.
2007-10-22, 5041👍, 0💬

What is LOCK escalation
What is LOCK escalation? Lock escalation is the process of converting of low level locks (like row locks, page locks) into higher level locks (like table locks). Every lock is a memory structure too many locks would mean, more memory being occupied by locks. To prevent this from happening, SQL Serve...
2007-10-25, 5039👍, 0💬

Why do we need methods to be static for Post Cache substitution
Why do we need methods to be static for Post Cache substitution? ASP.NET should be able to call this method even when there isn't an instance of your page class available. When your page is served from the cache, the page object isn't created. So ASP.NET skips the page life cycle when the page is co...
2007-10-23, 5036👍, 0💬

.NET Remoting versus Distributed COM ?
.NET Remoting versus Distributed COM ? In the past interprocess communication between applications was handled through Distributed COM, or DCOM. DCOM works well and the performance is adequate when applications exist on computers of similar type on the same network. However, DCOM has its drawbacks i...
2009-03-19, 5035👍, 0💬

What is concept of Boxing and Unboxing ?
.NET INTERVIEW QUESTIONS - What is concept of Boxing and Unboxing ? Boxing permits any value type to be implicitly converted to type object or to any interface type implemented by value type. Boxing is a process in which object instances are created and copy values in to that instance. Unboxing is v...
2010-04-20, 5034👍, 0💬

What is scavenging
What is scavenging ? When server running your ASP.NET application runs low on memory resources, items are removed from cache depending on cache item priority. Cache item priority is set when you add item to cache. By setting the cache item priority controls the items scavenging are removed first.
2007-10-23, 5033👍, 0💬

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