Data are namespaces. Namespaces are heavily used in C programming in two ways. First, the. NET Framework uses namespaces to organize its many classes Secondly, declaring your own namespaces can help control the scope of class and method names in larger programming projects.
Assembly is chunk of precompiled code that can be executed by the. NET runtime environment. It contains one or more than one Namespaces. NET program consists of one or more assemblies.
Assemblies are the building blocks of. NET Framework applications; they form the fundamental unit of deployment, version control, reuse, activation scoping, and security permissions.
An assembly is a collection of types and resources that are built to work together and form a logical unit of functionality. An assembly provides the common language runtime with the information it needs to be aware of type implementations. To the runtime, a type does not exist outside the context of an assembly. An assembly provides a fundamental unit of physical code grouping. It is an Output Unit. Assemblies contain MSIL code. A namespace provides a fundamental unit of logical code grouping.
It is a Collection of names where in each name is Unique. They form the logical boundary for a Group of classes. Namespace must be specified in Project-Properties. An assembly contains a collection of types for example l'assembly System contains many namespaces included System, System. IO, ecc. Usually, the name of assembly is the same of a namespace that it contains but not always.
It is possible use name of assembly that contains different namespaces and extend an existing assembly with an other assembly by this technique. An assembly is a collection of types and resources that forms a logical unit of functionality. All types in the. NET Framework must exist in assemblies; the common language runtime does not support types outside of assemblies.
NET, you're building a single assembly. Each assembly is stored as an. Note Although it's technically possible to create assemblies that span multiple files, you're not likely to use this technology in most situations.
Another way to organize your Visual Basic. NET code is through the use of namespaces. Namespaces are not a replacement for assemblies, but a second organizational method that complements assemblies. Namespaces are a way of grouping type names and reducing the chance of name collisions.
A namespace can contain both other namespaces and types. The full name of a type includes the combination of namespaces that contain that type. They are namespaces. Assemblies contains more than one namespace. For Example: System. Also one namespace might contain nested namespaces. They are just logical names to organize the code. Just be aware, a DLL files are assemblies that contains namespace s. According to MSDN:. The global assembly cache stores assemblies specifically designated to be shared by several applications on the computer.
So commonly used assemblies stored in the GAC and therefore you don't need to copy all assembly files to your project directory that you are referencing from your project. Normally when you add a reference to an assembly from your project that is not Strong-Named a copy of your.
If you wish you can make your assembly class library project for example Strong-Named. Others have given very good and detailed answers to this question. The MSDN library explains very clearly and simply the namespace and assembly in which any given type resides. It even says the name of the file in System. The file that you see in GAC is System. If you view the Reference properties in Visual studio then you will see:.
Later if you right click on the reference and select view in object browser you will see namespaces in that particular assembly. As amdluigi says, "Usually, the name of assembly is the same as a namespace that it contains but not always". There is a screenshot above of System. It's an excellent example to explore the issues here.
Note that most of the namespaces contained within the assembly are System. That means TextBox class is contained in the Forms namespace that is contained in the Windows namespace that is contained in the root System namespace. An assembly is a collection of types and resources that are built to work together and form a logical unit of functionality.
It is an Output Unit, that is. Assemblies are self describing, it contains all the metadata about the modules, types, and other elements in the form of a manifest.
Private assembly is intended only for one application. The files of that assembly must be placed in the same folder of the application. Shared assembly is to be made into a Shared Assembly, then the naming conventions are very strict since it has to be unique across the entire system.
Home C VB. NET framework. One is a feature in a coding language while the other is a partially compiled code that can be used for deployment. A namespace is defined as the very primitive element of logical code grouping. It helps to group named entities, that is, provide scope to identifiers such as functions, variables, etc.
Assembly, on the other hand, forms the foundation for physical code grouping. It is an output unit that is used for deployment , version control, activation scoping, and many more for the. NET-based applications. Assemblies are often known as the building blocks for these. NET applications. Each assembly can contain one or more modules.
A namespace is best defined as a declarative region that can provide scope to the identifiers inside it. It is a feature that helps to group and organize code in a logical way that clears the confusion by eradicating the chances of overlapping. In the case of using multiple libraries, overlapping of names is a very common inconvenience that coders deal with regularly.
But, one of the best perks of using a namespace is that it prevents the collision of names.
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