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100 .NET FAQS

Acronyms in .NET

ADO.NET Interview Questions

Advanced Interview Questions

Ajax Interview Questions

ASP.NET Interview Questions

ASP.NET 2.0 Interview Questions

ASP.NET 3.5 Interview Questions

ASP.NET 4.0 Interview Questions

ASP.NET Security Questions

Articles

C# Interview Questions

Comparison Questions

Design Pattern Questions

Dotnet Framework Questions

Entity Framework Questions

MVC Interview Questions

Silverlight Interview Questions

SQL Interview Questions

OOPS Interview Questions

SQL Connection Strings

Open Source

Expand MVC

Give one use of a Singleton Pattern

What is an Active Server Page (ASP)?

What is an ActiveX Data Object (ADO)?

What is SSIS used for?

What is the name of the file extension for an ASP.NET Web Handler?

What is the most common use of a private constructor?

What is VSTS?

When should we use a DOM parser and when should we use a SAX parser?

Which method of a DataAdaptor is used to load data in a DataSet?

In which version of ASP.NET was te DataGridView control introduced?

Explain what is a DataColumn

What is the default value of the AutoPostBack property of any ASP.NET control?

What is the difference between the Show() method and the ShowDialog() method?

What is the use of the peek() method of the TextReader class?

What is the use of the System.DataSqlTypes namespace?

What is wsdl.exe used for?

Which attribute is mandatory when a custom type is put in the HttpSessionState object?

When do you get invalid cast exceptions, during compile time or during runtime?

Which event of the global.asax file is called when the application is run for the first time?

Which attribute of the page directive can be used for page load and unload?

What is a HashTable object?

What is CAO?

What is CIL?

What is RCW?

What is the size of a GUID?

What is WML?

What is WSDL?

Which method of a Queue object is used to add an item to the end of a queue?

What is the purpose of the sn.exe tool?

How to dynamically register and invoke javascript from C#?

How to play a song in a Windows based application using .NET?

What is a COM object

What is a .sln file?

What is a .suo file?

What is a Well Known Object (WKO) in .NET>

What is CTS?

What is Windows Cardspace?

What is Workflow Foundation

What is WPF?

How to create a new unique ID for a control?

Whad does the keyword virtual in C# mean?

What is a CLR Stored Procedure?

What is a control state in ASP.NET?

What is FarPoint?

What is ILDASM?

What is new in the ASP.NET 4.0 web.config file?

What is the advantage of using System.Text.StringBuilder VS. System.String?

What is the purpose of the MustInherit keyword in VB.NET?

Where can you host WCF web services?

How can you edit data in a repeater control?

Name a few Content Management Systems?

Name a few open source E-Commerce portals based on .NET

What are partial classes in .NET?

What are Rad Controls?

Explain what is In Proc?

Explain what is Out Proc?

What is SetWow and Set64?

Which is the fastest ADO.NET object to fetch data from a backend?

Which method is used to save data in a DataSet object?

Can a GroupBox control contain multiple controls?

Can a method in C# be created without a name? If yes, how?

Can you overload a structure in C#?

How can you directly call unmanaged code in C#?

How do you step through each line of code while debugging?

How to set a port for the ASP.NET development server?

What is the difference between Strict On and Option Strict Off in VB.NET?

What is the MVP Pattern?

Which server side control manages all the web pars in an ASP.NET web page?

What is the XPathNavigator class used for?

Can an assembly have a version number?

How can we make sure an object can be serialized?

How do structures support inheritance?

PictureBox does not have a TabIndex property, true or false?

What are the two types of objects used in remoting?

What is a smart client?

What is the default access specifier for a variable?

What is the lower bound value for an array in C# and VB.NET?

Which class can be used to create dynamic creation of types at runtime?

Which encoding formats are used in Remoting? When to use each of these?

Can a class have more than one base class?

Can the contents of an uploaded file be read and searched?

How can we prevent a browser to cache an ASPX page?

Is it possible to automate tests in VSTS?

Is it possible to debug a windows service?

What is Hungarian notation?

What is RootDSE?

What is the max size of a cookie?

Tell something about the Microsoft Web Application Stress Tool?

What is the use of the DataKeyNames property?

How to restart a Windows Search Service?

What are the differences between BasicHttpBinding and WsHttpBinding?

What do we use a satellite assembly for?

What is a CompositeControl in .NET?

What is delay signing of an assembly?

What is JQuery?

What is NetTcpBinding?

What is the difference between get and post?

What is the difference between Themes and CSS?

What is the use of the OutputCache directive in ASP.NET?

Short Answer .NET Interview Questions Page 1

Short Answer .NET Interview Questions Page 2

Short Answer .NET Interview Questions Page 3

Short Answer .NET Interview Questions Page 4

Short Answer .NET Interview Questions Page 5

What is ADO.NET?

Whats a connection object? How to connect to a database?

What is a command object? How to use it?

What is SelectCommand?

What is a SqlCommandBuilder in ADO.NET?

What is a DataView?

How to use a DataRelation between two columns?

What is Diffgram? When do we use Diffgram?

What is a Typed Dataset? Why do we use it?

How to run a Stored Procedure from .NET code?

What is the difference between <%# %> and <%= %> symbols?

How are Web Services used in ASP.NET? What is a web service?

How can you pass data to a user control?

How can you zip a file or a folder in .NET?

How do we check whether a user is online or offline?

How to display dynamic ToolTips for controls?

How to dynamically build an ASP.NET Server Side Table?

How to improve the performance of ASP.NET pages?

How to refresh a page in another page?

Is it possible to step into a DLL’s source code from ASP.NET application while debugging?

Is there a way to insert a special non-ASCII characters into a database?

What is a contract in WCF?

What is a dependency injection?

What is a postback? How do ASP.NET controls trigger a postback?

What is cyclomatic complexity?

What is the character ‘~’ used for in ASP.NET?

What is the difference between a Web Application project and a Website project?

What is the difference between optimistic locking and pessimistic locking?

What is the difference between ‘System.Net.Mail’ and ‘System.Web.Mail’?

Why is it that the breakpoint doesn’t work sometimes during debugging?

How to redirect a user to a new page?

How to pass values between pages?

What is the role of the ASP.NET worker process?

Explain the page life cycle in ASP.NET 2.0

How to store global variables?

How to store values between postbacks?

What is a server control?

What is viewstate?

How to send an email using ASP.NET?

Which namespace does a webpage belong?

How to store information about a user's locale?

How to add an event handler for a server control?

What are validation controls? How do validation controls work?

What is global.asax? Application_start, Session_start?

What is an HTTP handler? Can we use it to upload files?

What is a session? Different ways to maintain session?

What is a cookie? Limitations of cookie? Permanent cookie?

How to set view state for a server control? Enableviewstate property?

What is smart navigation?

How to implement a web farm and a web garden?

Can dataset be stored in a viewstate?

What is the @Register directive used for?

Can we bind data to a server control without writing code in .NET?

How to use Masterpages and Contentpages using ASP.NET 2.0?

What is a nested Masterpage in ASP.NET 2.0?

What is a SiteMap control in ASP.NET 2.0? Can we have multiple sitemaps for a site using .NET?

How to sort data in a Gridview in .NET? Gridview Paging in .NET? Maximum records in gridview?

What does the Hotspot class in .NET do? What is an ImageMap in ASP.NET?

How do we update and delete data in a gridview? Datakeynames property in .NET?

Can multiple versions of .NET run and be installed on the same system?

How does the Datapager Control work?

Can .NET 2.0 run in Visual Studio 2008?

Tell something about the ASP.NET Merge Tool

What is a ScriptManager?

What is an UpdatePanel Control?

What is an UpdateProgress Control?

What is LINQ?

What is new in the ASP.NET 3.5 Framework?

What is the Listview Control?

What is the role of the ScriptManagerProxy control?

Which new assemblies have been added in ASP.NET 3.5?

In ASP.NET 4, when IIS is reset, will apps continue running?

How to create Meta Tags using the Page Directives?

Explain the difference between Response.Redirect(), Response.RedirectPermanent(), Server.Transfer()

Explain what is a Shrinking Session State

What way can we expand the size of the allowable URL limit?

How are XSS attacks prevented in ASP.NET 4

Tell some new features in ASP.NET 4

Point out some of the features of the ASP.NET 4.0 Chart Control

What is the advantage of Response.RedirectPermanent()

Explain what is the benefit of Extensible Output Caching

How is URL Routing done in ASP.NET 4

How do we do Web.config Refactoring in ASP.NET 4

What way can we control the IDs of Controls in ASP.NET 4

How do we monitor performance of apps built on ASP.NET 4?

Describe the security authentication process in aspnet

What is the Website Administrative Tool in Visual Studio 2005?

What is Authentication in ASP.NET?

What is Authorization in ASP.NET?

What is IIS Metabase?

What is mixed mode Authentication in ASP.NET?

What is Provider Model and Personalization in Aspnet 2.0?

Describe the accessibility modifier "protected internal"

Can multiple data types be stored in System.Array?

How to sort array elements in descending order?

Whats the use of "throw" keyword?

Can we put multiple catch blocks in a single try statement?

How to achieve polymorphism in C#?

How to achieve inheritance in C#?

Compare Session state and Viewstate?

How to add gridview/datagrid columns manually? Autogenerate?

How to add a ReadOnly property in C#?

How to prevent a class from being inherited? Sealed?

How to inherit the class, but not the method inside it?

Can we inherit multiple interfaces?

What are the different ways a method can be overloaded?

How to call a specific base constructor?

What are generics in C#?

What is the use of the main() function in C#?

Are C# Keywords in lowercase or uppercase?

What is the use of Console.Readline() in C#?

Can we set the specifier of the main() method in C# as private?

Can we set different types of parameters & return-types in main() method

What is the use of GetCommandLineArgs() method

What is the use of System.Environment class?

Why is the new keyword used for instantiating an object in .NET?

Default values of bool, int, double, string, char, reference-types?

Why does the compiler throw an error when variables are declared with initial value?

How to declare a constant variable in C#?

In C#, can we create an object of reference type using const keyword

What is the difference between const and readonly in C#?

What are the different parameter modifiers available in C#

What is the difference between out and ref in C#?

What is an interface in C#?

Dynamically finding the interface reference, is and as keyword

What are the different classes and interfaces inside System.Collection

Classic ASP & ASP.NET

ADO & ADO.NET

Structure, Class & Enum

Abstract Claress & Interface

Public, Private, Protected, Friend & Internal

Overriding & Shadowing

Class & Object

Shared & Static

Value Type & Reference Type

MSIL & CIL

DLL & EXE

Class Library & Namespace

String & StringBuilder

Web Service & Remoting

Public Assembly & Private Assembly

Trace & Debug

Server.Transfer & Response.Redirect

Server.Transfer & Server.Execute

Authentication & Authorization

ExecuteScalar & ExecuteNonQuery

DataReader & DataSet

System.Array.CopyTo & System.Array.Clone

Thread & Process

What is .NET?

Which languages can be used to program for .NET?

Which versions of .NET have been released so far?

What tools can be used for .NET Development?

Explain CLI, CIL, CTS, Metadata, CLS, IL and VES

What is CLR?

What is a class library?

Explain managed code, managed data, managed class

What is an assembly? What is ILDASM?

What is Reflection?

What are the different types of assemblies? Satellite assembly?

How do we share an assembly? How do we make it strongly named? SN.EXE?

What is GAC?

Can the Garbage Collector control activities of a thread?

For what do we use the IDisposable interface?

What is Serialization? SoapFormatter, BinaryFormatter, XmlFormatter?

What is CAS?

What is a class attribute?

What is a thread? How do we create and use it?

What is globalization?

What are generations in .NET?

How to use COM components in .NET?

Name the ADO.NET Base Classes

What are the advantages of using a DataSet?

Should we concatenate strings to build SQL queries?

What is deferred execution in LINQ?

What is the difference between Object LINQ Provider and Database LINQ Provider

What is a .edmx file?

Tell something about the ADO.NET Entity Framework

How does Silverlight programs connect with databases?

What is multiplicity and degree in LINQ?

What is NHibernate?

What are WCF Data Services?

Explain what is Optimistic Concurrency

Tell something about the TransactionScope Class in C#

Does the Entity Framework support CRUD operations?

Explain what is Lazy Loading

Can you create an MVC Unit Test Case in VS Standard?

How are CRSF attacks avoided in ASP.NET MVC Framework?

What is thread starvation? What are thread pools and how are they processed?

How to create a View for multiple models in MVC?

How are MVC projects created?

What is the best way to implement a Gridview control in the ASP.NET MVC Framework?

How do we use Validation Helpers in ASP.NET MVC?

Is MVC a Framework or a Design Pattern?

Point out some of the key advantages of the MVC Framework

Besides ASP.NET MVC, which ones are the other popular MVC Frameworks around?

Explain the use of an Asynchronous Controller in ASP.NET

What is NerdDinner?

What is Razor?

Name the validation helpers available in ASP.NET MVC Framework

Should we use Gridview, Repeater, Datalist in ASP.NET MVC Framework? Explain.

Can Silverlight work without .NET

How to run Silverlight in Full Screen Mode

Can Silverlight run on Desktop apps?

How to set the Silverlight Default Page Setting?

Compare Ajax VS. Java Applet

How to create a button in XAML

Video files support by Silverlight

What is Deep Zoom in Silverlight

What are the steps for displaying text in Silverlight

What is Deep Zoom Composer?

What is Moonlight

What is RIA

What is Silverlight

Compare WPF VS. Silverlight

What is a .XAP file in Silverlight

What is an AppManifest.xaml file in Silverlight?

Explain the role of the ClientBin Folder

What does the Silverlight Runtime do?

Name a few Silverlight supporting languages

What are Silverlight Layout Controls

Name a few Silverlight Development Tools

SQL Interview Questions for Review

What is SQL?

Syntax to Create a Table

What are DDL Commands? Create, Alter, Drop

What are DML Commands? Select, Insert, Update, Delete

What is a database? Syntax to create a database

What are the ACID rules of a transaction in SQL

What is a Dual table in Oracle

What is NULL in SQL?

What is a Join in SQL? What are the different types of joins

What is the difference between Table, View, Synonym in SQL?

How to run a stored procedure in SQL?

Write the syntax to create a function in SQL

What is a Stored Procedure in SQL?

Write the syntax to create a Stored Procedure in SQL

Whats the main difference between a Stored Procedure and Function?

What is OOPS?

What is a Class? Base class?

What do you mean by Encapsulation?

What do you mean by Inheritance?

What is a Class member? What is an object?

What do you mean by Polymorphism?

What is a property? What is an event?

What is an access modifier? Different types of access modifiers?

What is Overloading? Overloads, Overload?

What is the shared keyword used for? What is static?

What is the virtual keyword used for?

Explain overridable, overrides, notoverridable,mustoverride

What is the shadowing? What is shadows keyword used for?

What is a constructor? Explain the new keyword. Whats a private constructor?

What is a static constructor?

Explain serialization? What is serializable attribute used for?

What is a delegate? Whats a Multicast Delegate

What is an abstract class? Why do we use it?

What is an interface? When & how do we implement it?

Is multiple inheritance possible in .NET?

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Dotnetuncle's Tip:

A reference type is comprised of two parts namely the object and its reference address

ASP.NET Security Interview Questions

1 - Describe the security authentication process in aspnet
2 - What is the Website Administrative Tool in Visual Studio 2005?
3 - What is Authentication in ASP.NET?
4 - What is Authorization in ASP.NET?
5 - What is IIS Metabase?
6 - What is mixed mode Authentication in ASP.NET?
7 - What is Provider Model and Personalization in Aspnet 2.0?

More Interview Questions...


Dotnetuncle's Tip: ASP.NET 4.5 allows sharing of common DLLs on a web server, by using the concept of symbolic links.