Dotnet Practicals

.NET based Technical Interview Questions

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How many languages .NET is supporting now? 
Ans : When .NET was introduced it came with several languages. VB.NET, C#, COBOL and Perl, 
etc. The site DotNet Languages. Net says 44 languages are supported.. 
 
How is .NET able to support multiple languages? 
Ans : A language should comply with the Common Language Runtime standard to become a 
.NET language. In .NET, code is compiled to Microsoft Intermediate Language (MSIL for short). 
This is called as Managed Code. This Managed code is run in .NET environment. So after 
compilation to this IL the language is not a barrier. A code can call or use a function written in 
another language.. 
 
How ASP .NET different from ASP? 
Ans : Scripting is separated from the HTML, Code is compiled as a DLL, and these DLLs can be 
executed on the server. 
 
What is smart navigation? 
Ans : The cursor position is maintained when the page gets refreshed due to the server side 
validation and the page gets refreshed. 
 
What is view state? 
Ans: The web is stateless. But in ASP.NET, the state of a page is maintained in the page itself 
automatically. How? The values are encrypted and saved in hidden controls. This is done 
automatically by the ASP.NET. This can be switched off / on for a single control. 
How do you validate the controls in an ASP .NET page? 
Ans : Using special validation controls that are meant for this. We have Range Validator, Email 
Validator. 
 
Can the validation be done in the server side? Or this can be done only in the Client side? 
Ans :Client side is done by default. Server side validation is also possible. We can switch off the 
client side and server side can be done.. 
 
How to manage pagination in a page? 
Ans :Using pagination option in DataGrid control. We have to set the number of records for a 
page, then it takes care of pagination by itself. 
 
What is ADO .NET and what is difference between ADO and ADO.NET? 
Ans :ADO.NET is stateless mechanism. I can treat the ADO.Net as a separate in-memory 
database where in I can use relationships between the tables and select insert and updates to 
the database. I can update the actual database as a batch.. 
 
Describe the role of inetinfo.exe, aspnet_isapi.dll andaspnet_wp.exe in the page loading process. 
Ans :inetinfo.exe is theMicrosoft IIS server running, handling ASP.NET requests among other 
things.When an ASP.NET request is received (usually a file with .aspx extension),the ISAPI filter 
aspnet_isapi.dll takes care of it by passing the request tothe actual worker process 
aspnet_wp.exe.. 
What’s the difference between Response.Write() and Response.Output.Write()? 
Ans :The latter one allows you to write formatted output.. 
 
What methods are fired during the page load? 
Ans :Init() - when the page is instantiated, Load() - when the page is loaded into server 
memory, PreRender() - the brief moment before the page is displayed to the user asHTML, 
Unload() - when page finishes loading.. 
 
Where does the Web page belong in the .NET Framework class hierarchy? 
Ans :System.Web.UI.Page . 
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.NET based Technical Interview Questions

How many languages .NET is supporting now? Ans : When .NET was introduced it came with several languages. VB.NET, C#, COBOL and Perl, et...

DotNet Solve Questions

Unknown 0 09:12

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1) What is the Microsoft.NET? 
.NET is a set of technologies designed to transform the internet into a full scale 
distributed platform. It provides new ways of connecting systems, information and 
devices through a collection of web services. It also provides a language 
independent, consistent programming model across all tiers of an application. 
The goal of the .NET platform is to simplify web development by providing all of the 
tools and technologies that one needs to build distributed web applications. 
 
2)What is the .NET Framework? 
The .NET Framework is set of technologies that form an integral part of the .NET 
Platform. It is Microsoft's managed code programming model for building applications 
that have visually stunning user experiences, seamless and secure communication, 
and the ability to model a range of business processes. 
The .NET Framework has two main components: the common language runtime 
(CLR) and .NET Framework class library. The CLR is the foundation of the .NET 
framework and provides a common set of services for projects that act as building 
blocks to build up applications across all tiers. It simplifies development and provides 
a robust and simplified environment which provides common services to build 
application. The .NET framework class library is a collection of reusable types and 
exposes features of the runtime. It contains of a set of classes that is used to access 
common functionality. 
 
3)What is CLR? 
 The .NET Framework provides a runtime environment called the Common Language 
Runtime or CLR. The CLR can be compared to the Java Virtual Machine or JVM in 
Java. CLR handles the execution of code and provides useful services for the 
implementation of the program. In addition to executing code, CLR provides services 
such as memory management, thread management, security management, code 
verification, compilation, and other system services. It enforces rules that in turn 
provide a robust and secure execution environment for .NET applications. 
 
4)What is CTS? 
Common Type System (CTS) describes the datatypes that can be used by managed 
code. CTS defines how these types are declared, used and managed in the runtime. 
It facilitates cross-language integration, type safety, and high performance code 
execution. The rules defined in CTS can be used to define your own classes and 
values. 
 
5)What is CLS? 
Common Language Specification (CLS) defines the rules and standards to which 
languages must adhere to in order to be compatible with other .NET languages. This 
enables C# developers to inherit from classes defined in VB.NET or other .NET 
compatible languages. 
 
6)What is managed code? 
The .NET Framework provides a run-time environment called the Common Language 
Runtime, which manages the execution of code and provides services that make the 
development process easier. Compilers and tools expose the runtime's functionality 
and enable you to write code that benefits from this managed execution 
environment. The code that runs within the common language runtime is called 
managed code. 
 
7)What is MSIL? 
When the code is compiled, the compiler translates your code into Microsoft 
intermediate language (MSIL). The common language runtime includes a JIT 
compiler for converting this MSIL then to native code. 
MSIL contains metadata that is the key to cross language interoperability. Since this 
metadata is standardized across all .NET languages, a program written in one 
language can understand the metadata and execute code, written in a different 
language. MSIL includes instructions for loading, storing, initializing, and calling 
methods on objects, as well as instructions for arithmetic and logical operations, 
control flow, direct memory access, exception handling, and other operations. 
 
8)What is JIT? 
JIT is a compiler that converts MSIL to native code. The native code consists of 
hardware specific instructions that can be executed by the CPU. 
Rather than converting the entire MSIL (in a portable executable[PE]file) to native 
code, the JIT converts the MSIL as it is needed during execution. This converted 
native code is stored so that it is accessible for subsequent calls.  
 
9)What is portable executable (PE)? 
PE is the file format defining the structure that all executable files (EXE) and 
Dynamic Link Libraries (DLL) must use to allow them to be loaded and executed by 
Windows. PE is derived from the Microsoft Common Object File Format (COFF). The 
EXE and DLL files created using the .NET Framework obey the PE/COFF formats and 
also add additional header and data sections to the files that are only used by the 
CLR.</div>

DotNet Solve Questions

1) What is the Microsoft.NET? .NET is a set of technologies designed to transform the internet into a full scale distributed platform. It...

Diffrence Between WPF And WebForm

Unknown 0 01:08

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WPF vs ASP.NET</div>
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WPF, or Windows Presentation Foundation, 
is an application used for creating GUI interface for the Windows 
operating system. It is a one-stop shop for your images, documents, 
movies, media with their creation, display, and manipulation. It has the
 capability to manage Windows applications including actions like 
running, executing, and building them as well. It has been able to 
clearly define the boundaries between the user interface and the 
business perspective surrounding it. WPF has been able to manipulate the
 use of DirectX that has been embedded in its lowest level of 
architecture to come up with functionalities like animations, 2D and 3D 
drawings, different audio and video features, fixed and adaptive 
documents, <a href="http://www.differencebetween.net/technology/difference-between-data-warehousing-and-data-marts/" title="WAREHOUSING VS MARTS">data</a>
 binding, and other graphic capabilities. It is based on .NET 3.0 and 
uses XAML (Extensible Application Markup Language) capabilities by 
introducing the use of combo-boxes, buttons, etc. as part of the 
designer.</div>
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ASP.NET is a Microsoft product that is 
used to design dynamic web sites, applications, and services. It comes 
as part of the .NET framework, and its predecessor was ASP (Active 
Server Pages) technology. It is based on Common Language Runtime (CLR) 
that allows developers to write ASP.NET code using any other .NET 
language. The web pages developed using ASP.NET are called Web Forms 
that carry an .aspx extension. These web forms use XHTML markup language
 and features like server-side web controls and user controls that help 
the developers to manage the static as well as dynamic contents on the 
page. Microsoft has been able to segregate the static and dynamic 
content on a web <a href="http://www.differencebetween.net/language/difference-between-shape-and-form/" title="SHAPE VS FORM">form</a>
 via extensions. All .aspx pages contain static contents while dynamic 
are associated with .aspx.vb or .aspx.cs or .aspx.fs files.</div>
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Diffrence Between WPF And WebForm

WPF vs ASP.NET WPF, or Windows Presentation Foundation, is an application used for creating GUI interface for the Windows operating sy...

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.NET based Technical Interview Questions

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Diffrence Between WPF And WebForm

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