JIT (Just In Time Compiler) compiler runs after the program has started and compiles the code (usually bytecode or some kind of VM instructions) on the fly (or just-in-time, as it's called) into a form that's usually faster, typically the host CPU's native instruction set.During the code execution time, the Managed Code compiled only when it is needed, that is it converts the appropriate instructions to the native code for execution just before when each function is called. This process is called Just In Time (JIT) compilation, also known as Dynamic Translation .The Common Language Runtime (CLR) provides various Just In Time compilers (JIT) and each works on a different architecture depending on Operating System. That is why the same Microsoft Intermediate Language (MSIL) can be executed on different Operating Systems without rewrite the source code. JIT compilation preserves memory and save time during application initialization. JIT compilation is used to run at high speed, after an initial phase of slow interpretation.
Microsoft Intermediate Language(MSIL)
We can call it as Intermediate Language (IL) or Common Intermediate Language (CIL). When compiling to managed code, the compiler translates your source code into Microsoft intermediate language (MSIL), which is a CPU-independent set of instructions that can be efficiently converted to native code.
During the runtime the Common Language Runtime (CLR)'s Just In Time (JIT) compiler converts the Microsoft Intermediate Language (MSIL) code into native code to the Operating System.
MSIL produces metadata. MSIL and metadata are contained in a portable executable(PE) file.
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
Portable executable -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.
During the runtime the Common Language Runtime (CLR)'s Just In Time (JIT) compiler converts the Microsoft Intermediate Language (MSIL) code into native code to the Operating System.
MSIL produces metadata. MSIL and metadata are contained in a portable executable(PE) file.
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
Portable executable -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.
Common Language Specification (CLS)
It is a sub set of CTS and it specifies a set of rules that needs to be adhered or satisfied by all language compilers targeting CLR.
Common language specification Rules:
It describes the minimal and complete set of features to produce code that can be hosted by CLR.
Sample Rules:
1. Internal representation of enumerations
2. Representation of text strings
3. Definition of static members and this is a subset of the CTS which all .NET languages are expected to support.
4. Microsoft has defined CLS which are nothing but guidelines that language to follow so that it can communicate with other .NET languages in a seamless manner.
Common Language Specification (CLS) is a set of basic language features that .Net Languages needed to develop Applications and Services , which are compatible with the .Net Framework. When there is a situation to communicate Objects written in different .Net Complaint languages , those objects must expose the features that are common to all the languages . Common Language Specification (CLS) ensures complete interoperability among applications, regardless of the language used to create the application.
Common Language Specification (CLS) defines a subset of Common Type System (CTS) . Common Type System (CTS) describes a set of types that can use different .Net languages have in common , which ensure that objects written in different languages can interact with each other.
Common language specification Rules:
It describes the minimal and complete set of features to produce code that can be hosted by CLR.
Sample Rules:
1. Internal representation of enumerations
2. Representation of text strings
3. Definition of static members and this is a subset of the CTS which all .NET languages are expected to support.
4. Microsoft has defined CLS which are nothing but guidelines that language to follow so that it can communicate with other .NET languages in a seamless manner.
Common Language Specification (CLS) is a set of basic language features that .Net Languages needed to develop Applications and Services , which are compatible with the .Net Framework. When there is a situation to communicate Objects written in different .Net Complaint languages , those objects must expose the features that are common to all the languages . Common Language Specification (CLS) ensures complete interoperability among applications, regardless of the language used to create the application.
Common Language Specification (CLS) defines a subset of Common Type System (CTS) . Common Type System (CTS) describes a set of types that can use different .Net languages have in common , which ensure that objects written in different languages can interact with each other.
Common Type System - CTS
CTS describes a set of types that can be used in different .Net languages in common . That is , the Common Type System (CTS) ensure that objects written in different .Net languages can interact with each other. For Communicating between programs written in any .NET complaint language, the types have to be compatible on the basic level .The common type system supports two general categories of types:
1-Value Types
2-Reference Types
The Value Types are passed by values and stored in the stack. The Reference Types are passed by references and stored in the heap. Common Type System (CTS) provides base set of Data Types which is responsible for cross language integration. The Common Language Runtime (CLR) can load and execute the source code written in any .Net language, only if the type is described in the Common Type System (CTS) .Most of the members defined by types in the .NET Framework Class Library (FCL) are Common Language Specification (CLS) compliant Types.
1-Value Types
2-Reference Types
The Value Types are passed by values and stored in the stack. The Reference Types are passed by references and stored in the heap. Common Type System (CTS) provides base set of Data Types which is responsible for cross language integration. The Common Language Runtime (CLR) can load and execute the source code written in any .Net language, only if the type is described in the Common Type System (CTS) .Most of the members defined by types in the .NET Framework Class Library (FCL) are Common Language Specification (CLS) compliant Types.
.Net Framework Class Library (FCL)
The .Net Framework Class Library (FCL) includes a huge collection of reusable classes , interfaces, and value types that expedite and optimize the
development process and provide access to system functionality.This is also called as Base Class Library and it is common for all types of applications
The following are different types of applications that can make use of .net class library.
1. Windows Application.
2. Console Application
3. Web Application.
4. XML Web Services.
5. Windows Services.
The .Net Framework class library (FCL) organized in a hierarchical tree structure and it is divided into Namespaces. Namespaces is a logical grouping of
types for the purpose of identification. Framework class library (FCL) provides the consistent base types that are used across all .NET enabled languages.
The Classes are accessed by namespaces, which reside within Assemblies. The System Namespace is the root for types in the .NET Framework.
development process and provide access to system functionality.This is also called as Base Class Library and it is common for all types of applications
The following are different types of applications that can make use of .net class library.
1. Windows Application.
2. Console Application
3. Web Application.
4. XML Web Services.
5. Windows Services.
The .Net Framework class library (FCL) organized in a hierarchical tree structure and it is divided into Namespaces. Namespaces is a logical grouping of
types for the purpose of identification. Framework class library (FCL) provides the consistent base types that are used across all .NET enabled languages.
The Classes are accessed by namespaces, which reside within Assemblies. The System Namespace is the root for types in the .NET Framework.
Common Language Runtime in .net framework
Common Language Runtime (CLR)
.Net Framework provides runtime environment called Common Language Runtime (CLR). It works as a layer between Operating Systems and the applications written in .Net languages that conforms to the Common Language Specification (CLS).
It provides an environment to run all the .Net Programs. The code which runs under the CLR is called as Managed Code. Programmers need not to worry on managing the memory if the programs are running under the CLR as it provides memory management and thread management.
Programmatically, when our program needs memory, CLR allocates the memory for scope and de-allocates the memory if the scope is completed.
Language Compilers (for example. C#, VB.Net, J#) will convert the Code/Program to Microsoft Intermediate Language (MSIL) intern this will be converted to Native Code by CLR.
The runtime provides the following benefits:
Performance improvements.
The ability to easily use components developed in other languages.
Extensible types provided by a class library.
Language features such as inheritance, interfaces, and overloading for object-oriented programming.
Support for explicit free threading that allows creation of multithreaded, scalable applications.
Support for structured exception handling.
Support for custom attributes.
Garbage collection.
Use of delegates instead of function pointers for increased type safety and security.
.Net Framework provides runtime environment called Common Language Runtime (CLR). It works as a layer between Operating Systems and the applications written in .Net languages that conforms to the Common Language Specification (CLS).
It provides an environment to run all the .Net Programs. The code which runs under the CLR is called as Managed Code. Programmers need not to worry on managing the memory if the programs are running under the CLR as it provides memory management and thread management.
Programmatically, when our program needs memory, CLR allocates the memory for scope and de-allocates the memory if the scope is completed.
Language Compilers (for example. C#, VB.Net, J#) will convert the Code/Program to Microsoft Intermediate Language (MSIL) intern this will be converted to Native Code by CLR.
The runtime provides the following benefits:
Performance improvements.
The ability to easily use components developed in other languages.
Extensible types provided by a class library.
Language features such as inheritance, interfaces, and overloading for object-oriented programming.
Support for explicit free threading that allows creation of multithreaded, scalable applications.
Support for structured exception handling.
Support for custom attributes.
Garbage collection.
Use of delegates instead of function pointers for increased type safety and security.
What are the functions of Microsoft .Net Framework.?
When compiling to managed code, the compiler translates your source code into Microsoft intermediate language (MSIL), which is a CPU-independent set of instructions that can be efficiently converted to native code. 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. Before code can be run, MSIL must be converted to CPU-specific code, usually by a just-in-time (JIT) compiler. When a compiler produces MSIL, it also produces metadata.
Metadata is completely self-describing . Metadata is stored in a file called Manifest, and it contains information about the members, types, references and all the other data that the Common Language Runtime (CLR) needs for execution .The Common Language Runtime (CLR) uses metadata to locate and load classes, generate native code, provide security, and execute Managed Code. Both Microsoft Intermediate Language (MSIL) and Metadata assembled together is known as Portable Executable (PE) file. Portable Executable (PE) is supposed to be portable across all 32-bit operating systems by Microsoft .Net Framework.
During the runtime the Common Language Runtime (CLR)'s Just In Time (JIT) compiler converts the Microsoft Intermediate Language (MSIL) code into native code to the Operating System. The native code is Operating System independent and this code is known as Managed Code , that is, the language's functionality is managed by the .NET Framework . The Common Language Runtime (CLR) provides various Just In Time (JIT) compilers, and each works on a different architecture depends on Operating Systems, that means the same Microsoft Intermediate Language (MSIL) can be executed on different Operating Systems. From the following section you can see how Common Language Runtime (CLR) functions .
Metadata is completely self-describing . Metadata is stored in a file called Manifest, and it contains information about the members, types, references and all the other data that the Common Language Runtime (CLR) needs for execution .The Common Language Runtime (CLR) uses metadata to locate and load classes, generate native code, provide security, and execute Managed Code. Both Microsoft Intermediate Language (MSIL) and Metadata assembled together is known as Portable Executable (PE) file. Portable Executable (PE) is supposed to be portable across all 32-bit operating systems by Microsoft .Net Framework.
During the runtime the Common Language Runtime (CLR)'s Just In Time (JIT) compiler converts the Microsoft Intermediate Language (MSIL) code into native code to the Operating System. The native code is Operating System independent and this code is known as Managed Code , that is, the language's functionality is managed by the .NET Framework . The Common Language Runtime (CLR) provides various Just In Time (JIT) compilers, and each works on a different architecture depends on Operating Systems, that means the same Microsoft Intermediate Language (MSIL) can be executed on different Operating Systems. From the following section you can see how Common Language Runtime (CLR) functions .
What is Microsoft .Net Framework
.NET Framework (pronounced dot net) is a software framework developed by Microsoft that runs primarily on Microsoft Windows.
Microsoft .Net Framework is a platform that provides tools and technologies you need to build Networked Applications as well as Distributed Web Services and Web Applications. The .Net Framework provides the necessary compile time and run-time foundation to build and run any language that conforms to the Common Language Specification (CLS).The main two components of .Net Framework are Common Language Runtime (CLR) and .Net Framework Class Library (FCL).
.NET Framework includes a large class library known as Framework Class Library (FCL) and provides language interoperability across several programming languages.The Common Language Runtime (CLR) is the runtime environment of the .Net Framework , that executes and manages all running code like a Virtual Machine.
Microsoft .Net Framework is a platform that provides tools and technologies you need to build Networked Applications as well as Distributed Web Services and Web Applications. The .Net Framework provides the necessary compile time and run-time foundation to build and run any language that conforms to the Common Language Specification (CLS).The main two components of .Net Framework are Common Language Runtime (CLR) and .Net Framework Class Library (FCL).
.NET Framework includes a large class library known as Framework Class Library (FCL) and provides language interoperability across several programming languages.The Common Language Runtime (CLR) is the runtime environment of the .Net Framework , that executes and manages all running code like a Virtual Machine.
History of .net framework,version history of .NET,features history of .net framework
The .NET Framework is an essential technology for ASP.NET development. it is a software development platform developed by Microsoft. It runs on Microsoft Windows OS. .NET provides tools and libraries that allow developers to develop applications and services much easily, faster and secure by using a convenient way.
History of .net framework
For more information click below link.
https://msdn.microsoft.com/en-us/library/bb822049%28v=vs.110%29.aspx
History of .net framework
For more information click below link.
https://msdn.microsoft.com/en-us/library/bb822049%28v=vs.110%29.aspx
A potentially dangerous Request.Form value was detected from the client/A potentially dangerous Request.Form value was detected" when updating content with HTML tags
Here are possible solution which may help you. Make server side configuration setting for this. If you want to allow HTML element as input from selected pages in your project than you set this page attribute.
<%@ Page ValidateRequest="false" %>
This ValidateRequest="false" on each page. If you want in all pages in you project than make changes in Web.Config file. Add this tag In section.
If you are using .Net 4.0 than you have to make one more change in Web.Config file. Add this tag In section.
<httpRuntime requestValidationMode="2.0" />
Here are configuration for do not validate request for all pages in .Net 4.0
<configuration>
<system.web>
<httpRuntime requestValidationMode="2.0" />
<pages enableSessionState="true" validateRequest="false"/>
</system.web>
</configuration>
Subscribe to:
Posts
(
Atom
)