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What is Web.config?
In classic ASP all Web site related information was stored in the metadata of IIS. This had the disadvantage that remote Web developers couldn't easily make Web-site configuration changes. For example, if you want to add a custom 404 error page, a setting needs to be made through the IIS admin tool, and you're Web host will likely charge you a flat fee to do this for you.With ASP.NET, however,...
samiksc
- Jan 17th, 2006
Web.config is the asp.net configuration file which stores configuration settings of the folder in which it resides and its subfolders. If a subfolder contains web.config then it overrides the settings...
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What is the difference between ASP and ASP.NET?
ASP ASP.NET ASP is interpreted. ASP.NET Compiled event base programming. Control events for text button can be handled at client javascript only. Since we have server controls events can handle at server side. More error handling. • ASP .NET has better language support, a large set of new controls and XML based components, and better user authentication....
samiksc
- Jan 16th, 2006
To summarize the points of differences are as follows:Code behind in asp.net allows separation of business logic from UI, which is not possible in asp.ASP.Net uses ADO.Net objects which are represente...
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What is the difference between "using System.Data;" and directly adding the reference from "Add References Dialog Box"?
When u compile a program using command line, u add the references using /r switch. When you compile a program using Visual Studio, it adds those references to our assembly, which are added using "Add Reference" dialog box. While "using" statement facilitates us to use classes without using their fully qualified names.For example: if u have added a reference to "System.Data.SqlClient"...
samiksc
- Jan 16th, 2006
The library which you want to use in your code must have a reference added using 'add reference'.The 'using ..' statement allows you to call methods in the namespace directly without using the fully qualified name like .
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Observations between VB.NET and VC#.NET
Choosing a programming language depends on your language experience and the scope of the application you are building. While small applications are often created using only one language, it is not uncommon to develop large applications using multiple languages.For example, if you are extending an application with existing XML Web services, you might use a scripting language with little or no...
samiksc
- Jan 16th, 2006
The points of difference are as follows:VB.Net does not allow use of unmanaged code, while C# allows the same.C# performance is slightly better than that of VB.Net parallel code.C# supports XML docume...
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What is Delegation?
A delegate acts like a strongly type function pointer. Delegates can invoke the methods that they reference without making explicit calls to those methods.Delegate is an entity that is entrusted with the task of representation, assign or passing on information. In code sense, it means a Delegate is entrusted with a Method to report information back to it when a certain task (which the Method...
samiksc
- Jan 16th, 2006
A delegate is a type-safe function pointer. Delegates are used in event handling. Delegates are declared using the following syntax:public delegate MyDelegate();
sanker
- Nov 11th, 2005
Delegate are a referenced type that refers to shared method of type or a to an instance method of an object
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What are Attributes?
Attributes are declarative tags in code that insert additional metadata into an assembly. There exist two types of attributes in the .NET Framework: Predefined attributes such as AssemblyVersion, which already exist and are accessed through the Runtime Classes; and custom attributes, which you write yourself by extending the System.Attribute class.
samiksc
- Jan 16th, 2006
Attributes are part of metadata for a class.Attributes are used to specify assembly information like key file name, or for specifying security related information. You can create new attributes for your specific needs or ideas.
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Briefly explain what user controls are and what server controls are and the differences between the two.
samiksc
- Jan 16th, 2006
A server side control is a built in control provided by .Net framework class libraries. This control may be placed on a web form and all its events are handled on the server.A user control is a .ascx ...
Sasidar
- Jul 11th, 2005
An ASP.NET control (sometimes called a server control) is a server-side component that is shipped with .NET Framework. A server control is a compiled DLL file and cannot be edited. It can, however, be...
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Briefly explain how the server control validation controls work.
samiksc
- Jan 16th, 2006
There are following types of validation controls provided by ASP.Net:RequiredFieldValidatorCompareValidatorRangeValidatorRegularExpressionValidatorCustomValidatorThese controls are server side control...
Takrim Khan
- Jul 21st, 2005
A validation control works by evaluating the value of an input server control on the page to see whether it meets certain criteria. The input control to evaluate is specified through the validation co...
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What is an Intermediate language?
Assemblies are made up of IL code modules and the metadata that describes them. Although programs may be compiled via an IDE or the command line, in fact, they are simply translated into IL, not machine code. The actual machine code is not generated until the function that requires it is called. This is the just-in-time, or JIT, compilation feature of .NET. JIT compilation happens at runtime...
samiksc
- Jan 16th, 2006
MSIL is the intermediate language which is platform independent. High level language compilers for .Net languages compile the high level code into IL which is not hardware specific. The use of IL allo...
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Creating a Key Pair
You can create a key pair using the Strong Name tool (Sn.exe). Key pair files usually have an .snk extension.To create a key pair At the command prompt, type the following command: sn –k <file name> In this command, file name is the name of the output file containing the key pair. The following example creates a key pair called sgKey.snk. sn -k sgKey.snk
samiksc
- Jan 16th, 2006
To create a key pair use the dotnet command line tool sn.exesn.exe -k mykey.snkThis filename is used as the attribute value for AssemblyKeyFileAttribute in one of the code files of assembly. It generates a strong named assembly which could be installed into the GAC.
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True or False: To test a Web service you must create a windows application or Web application to consume this service?
samiksc
- Jan 16th, 2006
Not necessary. Run the web service project. It displays the <service_name>.asmx page which shows the methods (operations) supported by the web service. Clicking on an operation allows you to spe...
vvbabu
- Jul 31st, 2005
No need
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How is a property designated as read-only?
samiksc
- Jan 16th, 2006
In C# if you specify a get accessor but do not specify a set accessor for a property it becomes a read only property.
Binda Joshi
- Mar 10th, 2005
In VB.NET:Public ReadOnly Property PropertyName As ReturnType Get ?Your Property Implementation goes in hereEnd GetEnd Property
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What is a Strong Name?
A strong name consists of the assembly's identity — its simple text name, version number, and culture information (if provided) — plus a public key and a digital signature. It is generated from an assembly file (the file that contains the assembly manifest, which in turn contains the names and hashes of all the files that make up the assembly), using the corresponding private ...
samiksc
- Jan 13th, 2006
A strong name is a way to ensure that a shared assembly's name does not conflict with another shared assembly. A strong name contains assembly name, a public key and a private key. For installing an a...
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What is "Common Type System" (CTS)?
CTS defines all of the basic types that can be used in the .NET Framework and the operations performed on those type. All this time we have been talking about language interoperability, and .NET Class Framework. None of this is possible without all the language sharing the same data types. What this means is that an int should mean the same in VB, VC++, C# and all other .NET compliant...
samiksc
- Jan 13th, 2006
CTS, common type system is the one which brings all .net languages data types on a common platform. It defines types like System.Int16, System.Int32 etc. A language may map 'int' to System.Int16 while...
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What are good ADO.NET object(s) to replace the ADO Recordset object.
samiksc
- Jan 13th, 2006
ADO.Net dataset is a good replacement / enhancement for ADO recordsets. The advantages areXML representation and scalabilitypossibility of bringing data from multiple data sources into one dataset
Binda Joshi
- Mar 10th, 2005
The ADO Recordset bundles functionality together into one object and handles much behavior implicitly. ADO.NET, on the other hand, has been designed to factor behavior into separate components and to enable you to explicitly control behavior.ADO.NET Ojects - Data set, Data Adapter, Data Reader.
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What is "Microsoft Intermediate Language" (MSIL)?
A .NET programming language (C#, VB.NET, J# etc.) does not compile into executable code; instead it compiles into an intermediate code called Microsoft Intermediate Language (MSIL). As a programmer one need not worry about the syntax of MSIL - since our source code in automatically converted to MSIL. The MSIL code is then send to the CLR (Common Language Runtime) that converts the code to...
samiksc
- Jan 13th, 2006
MSIL is Microsoft Intermediate Language which is platform independent. Any .Net application is compiled in two steps -- first the high level language compiler compiles it into MSIL and then the CLR co...
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What is .NET / .NET Framework?
It is a Framework in which Windows applications may be developed and run.The Microsoft .NET Framework is a platform for building, deploying, and running Web Services and applications. It provides a highly productive, standards-based, multi-language environment for integrating existing investments with next-generation applications and services as well as the agility to solve the challenges of deployment...
samiksc
- Jan 13th, 2006
.Net framework is a platform for building, deploying and running web services and other applications. It provides memory management and a rich set of classes.It facilitates integration of code written...
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Using COM Component in .Net
As most of you know that .Net does not encourage the development of COM components and provides a different solution to making reusable components through Assemblies. But, there are a lot of COM components present which our .Net application might need to use. Fortunately, .Net provides an extremely simple approach to achieve this. This is achieved by using ‘Wrapper Classes’...
samiksc
- Jan 13th, 2006
.Net provides facility of using COM components for backward compatibility and reusability for existing components. COM components cannot be used directly in .net since they do not follow .net structur...
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Using ActiveX Control in .Net
ActiveX control is a special type of COM component that supports a User Interface. Using ActiveX Control in your .Net Project is even easier than using COM component. They are bundled usually in .ocx files. Again a proxy assembly is made by .Net utility AxImp.exe (which we will see shortly) which your application (or client) uses as if it is a .Net control or assembly.• Making Proxy...
samiksc
- Jan 13th, 2006
ActiveX control is actually a COM component. For using a COM component in a .net project you can follow one of the following two procedures --For private COM components -- In the .net project click Ad...
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Advantages of VB.NET
1. First of all, VB.NET provides managed code execution that runs under the Common Language Runtime (CLR), resulting in robust, stable and secure applications. All features of the .NET framework are readily available in VB.NET. 2. VB.NET is totally object oriented. This is a major addition that VB6 and other earlier releases didn't have. 3. The .NET framework comes with ADO.NET, which follows...
samiksc
- Jan 12th, 2006
VB.Net offers following advantages --OOPs features like inheritance and polymorphismInterfaces, namespaces, delegates.Net security featuresScalability due to ADO.Net (ADO.Net objects are represented u...
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