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What is an application manifest?

Posted By :Narayanan     Posted Date :December 08, 2011    Points :40   Category :.NET Framework 

The application manifest which gives information to the operating system

You can also find related Interview Question to What is an application manifest?  below: 

What is Application Domain?

The primary purpose of the AppDomain is to isolate an application from other applications. Win32 processes provide isolation by having distinct memory address spaces. This is effective, but it is expensive and doesn't scale well. The .NET runtime enforces AppDomain isolation by keeping control over the use of memory - all memory in the AppDomain is managed by the .NET runtime, so the runtime can ensure that AppDomains do not access each other's memory.
Objects in different application domains communicate either by transporting copies of objects across application domain boundaries, or by using a proxy to exchange messages.
MarshalByRefObject is the base class for objects that communicate across application domain boundaries by exchanging messages using a proxy. Objects that do not inherit from MarshalByRefObject are implicitly marshal by value. When a remote application references a marshal by value object, a copy of the object is passed across application domain boundaries. (More...)

What is Assembly manifest? what all details the assembly manifest will contain?

Every assembly, whether static or dynamic, contains a collection of data that describes how the elements in the assembly relate to each other. The assembly manifest contains this assembly metadata. An assembly manifest contains all the metadata needed to specify the assembly's version requirements and security identity, and all metadata needed to define the scope of the assembly and resolve references to resources and classes. The assembly manifest can be stored in either a PE file (an .exe or .dll) with Microsoft intermediate language (MSIL) code or in a standalone PE file that contains only assembly manifest information.

It contains Assembly name, Version number, Culture, Strong name information, List of all files in the assembly, Type reference information, Information on referenced assemblies. (More...)

Difference between assembly manifest & metadata?

assembly manifest - An integral part of every assembly that renders the assembly self-describing. The assembly manifest contains the assembly's metadata. The manifest establishes the assembly identity, specifies the files that make up the assembly implementation, specifies the types and resources that make up the assembly, itemizes the compile-time dependencies on other assemblies, and specifies the set of permissions required for the assembly to run properly. This information is used at run time to resolve references, enforce version binding policy, and validate the integrity of loaded assemblies. The self-describing nature of assemblies also helps makes zero-impact install and XCOPY deployment feasible.

metadata - Information that describes every element managed by the common language runtime: an assembly, loadable file, type, method, and so on. This can include information required for debugging and garbage collection, as well as security attributes, marshaling data, extended class and member definitions, version binding, and other information required by the runtime. (More...)

I have written an assembly that I want to use in more than one application. Where do I deploy it?

Assemblies that are to be used by multiple applications (for example, shared assemblies) are deployed to the global assembly cache. In the prerelease and Beta builds, use the /i option to the Alink SDK tool to install an assembly into the cache:
al /i:myDll.dll
A future version of the Windows Installer will be able to install assemblies into the global assembly cache. (More...)

What is an application domain?

An application domain (often AppDomain) is a virtual process that serves to isolate an application. All objects created within the same application scope (in other words, anywhere along the sequence of object activations beginning with the application entry point) are created within the same application domain. Multiple application domains can exist in a single operating system process, making them a lightweight means of application isolation.
An OS process provides isolation by having a distinct memory address space. While this is effective, it is also expensive, and does not scale to the numbers required for large web servers. The Common Language Runtime, on the other hand, enforces application isolation by managing the memory use of code running within the application domain. This ensures that it does not access memory outside the boundaries of the domain. It is important to note that only type-safe code can be managed in this way (the runtime cannot guarantee isolation when unsafe code is loaded in an application domain). (More...)

Explain manifest & metadata.

Manifest is metadata about assemblies. Metadata is machine-readable information about a resource, or ""data about data." In .NET, metadata includes type definitions, version information, external assembly references, and other standardized information. (More...)

Describe the techniques for optimising your application?

. Avoid round-trips to server. Perform validation on client.
. Save viewstate only when necessary.
. Employ caching.
. Leave buffering on unless there is a dire need to disable it.
. Use connection pooling.
. Use stored procedures instead of in-line SQL or dynamic SQL. (More...)

Differences between application and session.

The session object maintains state on a per client basis whereas the application object is on a per application basis and is consistent across all client requests. (More...)

What is web application virtual directory?

A virtual directory appears to client browsers as though it were
contained in a Web server's root directory, even though it can physically Reside somewhere else. (More...)

Explain manifest & metadata?

Manifest is metadata about assemblies. Metadata is machine-readable information about a resource, or ""data about data." In .NET, metadata includes type definitions, version information, external assembly references, and other standardized information.

Manifest: Manifest describes assembly itself. Assembly Name, version number, culture, strong name, list of all files, Type references, and referenced assemblies.

Metadata: Metadata describes contents in an assembly classes, interfaces, enums, structs, etc., and their containing namespaces, the name of each type, its visibility/scope, its base class, the nterfaces it implemented, its methods and their scope, and each method's parameters, type's properties, and so on.

Shashi Ray (More...)

what is different between session and application

session is a object that store information between http request for a paticular user.
->But application object are global for each user (More...)

What is Version Number in Assembly Manifest ?

A revision and build number in an assemblies is called Version Number.

There are Major and Minor Version number in an assembly. you can change this version number in assemblyinfo.cs file
usually version number looks like this in assemblyinfo.cs

The common language run time uses these numbers to enforce version policy. (More...)

What is Manifest?

Assembly metadata is stored in Manifest. Manifest contains all the metadata needed to do the following things (See Figure Manifest View for more details):
. Version of assembly
. Security identity ? Scope of the assembly
. Resolve references to resources and classes.
. The assembly manifest can be stored in either a PE file (an .exe or .dll) with Microsoft intermediate language (MSIL) code or in a stand-alone PE file that contains only assembly manifest information. (More...)

What is the best place to start Silverlight application?

There is no hard and fast rule to start Silverlight application. Every developer can start as per his/her experience.
like as per my case I always prefer Visual Studio. SO, in my view Visual Studio is the best place to start with Silverlight2 applications.Microsoft provides
templates for creating Silverlight applications and libraries in C#
and Visual Basic. (More...)

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