DOCSLIB.ORG

NET Is Coming Programming the .NET Runtime

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
NET Is Coming Programming the .NET Runtime SOFTWARE TECHNOLOGIES the focus of the technology—it’s simply the means to an end, the basic notation for .NET Is Coming programming the .NET runtime. Technically, C# looks very much like Java, with extensions similar to mecha- Bertrand Meyer, Interactive Software Engineering nisms found in Delphi and Microsoft’s Visual J++. These extensions include “properties”—an attempt to remedy This month’s contribution to Software Technologies discusses the emergence of Java’s information-hiding deficiencies— Microsoft’s .NET platform for Web services. While it is significantly longer than the and an event-driven programming model standard for the department, I argued that the additional length is warranted because using the notion of “delegates”—object this technology promises to have significant, wide-ranging effects on software devel- wrappers around functions—that are opment, and the editorial staff concurred. We all hope that readers will be as inter- appropriate for graphical user interface ested in this development as we are. and Web applications. Michael Lutz, Area Editor While it is likely to become a serious competitor to Java, C# is not an attempt nnounced in July 2000, .NET, connected bike at the gym, you can effort- to replace all existing languages. In fact, Microsoft’s platform for lessly change both your evening’s restau- Microsoft’s own investment in Visual XML-based Web services, is rant reservation and babysitter while Basic (recent estimate: 6 million devel- A currently undergoing a succes- pedaling away without missing a beat. If opers) and C++ would make such a goal sion of beta versions for a pro- the aim is to set lofty ideals for the next self-defeating. jected release late this year or early in 2002. .NET has a central role in Micro- soft’s strategy to integrate the Internet, .NET, an open language enterprise and Web services, building block services, numerous tools for developers, and Web development platform, has the many other features. Curiously though, this next generation potential to dominate the computing of software hasn’t grabbed the comput- industry for years to come. ing world’s attention as Java did in its heyday. Yet, in many respects, .NET is a more important phenomenon. The busi- ness press, for its part, hasn’t missed the generation, this example is admittedly Instead, a distinctive characteristic of technology’s significance. Both Business underwhelming, but since when are tech- .NET is its language neutrality. In addition Week (cover story, 30 Oct. 2000) and nical journalists supposed to judge new to Microsoft-supported languages, .NET The Economist (January 2001) have technologies by press releases? is open to many others including Cobol, devoted major coverage to .NET. Others have been more perspicacious. Eiffel, Fortran, Perl, Python, Smalltalk, For example, the Patricia Seybold Group and a host of research languages from ML A FAILURE OR THE FUTURE? wrote that “.NET is a leading example to Haskell and Oberon. Unlike others in Perhaps it is .NET’s breadth of cover- of what we believe will be the dominant the industry, Microsoft isn’t trying to con- age that has puzzled some technical architectural model for the third genera- vert the world to a new language. observers and made them wonder tion of Internet applications” and that it whether there was anything beyond the has “ominous implications for a large .NET ARCHITECTURE hype. One observer who doesn’t think so number of Microsoft competitors.” So what is .NET? A general definition is John Dvorak, who in his November might be: “An open language platform 2000 PC Magazine column wrote that WHAT .NET ISN’T for enterprise and Web development.” .NET is “surrounded by too many buzz- In describing .NET, it’s useful first to The aim is to provide an abstract words and generalities to be under- point out what it is not. It’s neither an machine for professional developers, cov- standable. I’m not sure the company operating system nor a programming lan- ering both traditional IT—client-server, knows what .NET is, or whether any- guage. Microsoft operating systems con- n-tier—and Web-oriented applications. body does. It has the onerous smell of tinue their own evolution—Windows Figure 1 shows the six layers of the plat- failure about it already.” 2000, Me, XP, CE for embedded devices— form’s overall structure. The basis for this indictment seems to although you can expect more .NET bits Web services. The top layer provides be a Microsoft public relations document to filter down into the base OS. As for pro- .NET users—persons and companies— describing an exciting future in which— gramming languages, .NET has intro- with Web services for e-commerce and thanks to .NET—from your Web- duced a new one, C# (C-sharp), but it’s not business-to-business applications. 92 Computer Frameworks and libraries. A set of frameworks and libraries provides the most immediately attractive aspect for Web services developers. These include ASP.NET, active server pages for developing smart Web Frameworks and libraries: sites and services; ADO.NET, an XML- ASP.NET, ADO.NET, Window Forms based improvement to ActiveX Data Interchange standards: Common development tools: Objects, for databases and object-rela- SOAP, WSDL Visual Studio.Net tional processing; and Windows Forms for graphics. Altogether, .NET contains Component model thousands of reusable components. Object model and common language specification Interchange standards. XML-based interchange standards serve as a plat- Common language runtime form-independent means of exchanging objects. The most important are SOAP (simple object access protocol), an Figure 1. Elements of the .NET architecture. Microsoft’s Web development platform consists of increasingly popular way to encode six layers from the user-visible Web services to the internal object model and common language objects, and WSDL (Web Services runtime. Description Language). Development environment. The new set of mechanisms for executing .NET drag and drop to input validation, Visual Studio.Net provides the tool of programs regardless of their language of Web controls facilitate building Web most direct use to developers: A common origin: translation to machine code (judi- pages that look like a modern non- software development environment offer- ciously incremental translation, or “jit- Web GUI. ing facilities for development, compila- ting”), loading, security mechanisms, • The Web controls, handled by de- tion, browsing, and debugging shared by memory management (including garbage fault on the server side, yield many languages. This environment, an collection), version control, and inter- browser-dependent rendering—out- outgrowth of Visual Studio extended facing with non-.NET code. put that is automatically tailored to with an application programming inter- .NET provides these capabilities over the browser. Some operations can be face, not only supports Microsoft-imple- a broad spectrum of hardware and soft- processed on the client side—for mented languages such as Visual C++, ware platforms, ranging from very high- example, if the Web site visitor is Visual Basic, and C# but also allows end servers and Web farms to PCs, using a recent version of Internet third-party vendors to plug in tools and phones, PDAs, other wireless devices, Explorer or the browser supports compilers for other languages. and Internet appliances. dynamic HTML or JavaScript. In Component model. Before .NET there the default case, the server handles were already three major contenders for .NET BENEFITS the interaction and renders every- leadership in the field of models and stan- Users and developers can expect thing as plain HTML. dards for component-based development: numerous benefits from the spread of • ASP.NET accomplishes one of the Corba from the Object Management .NET. For many, the most impressive most delicate aspects of Web request Group, J2EE from Sun, and Microsoft’s component will be the ASP.NET frame- processing: maintaining a client’s COM. .NET brings in one more model, work. ASP.NET is not an incremental state. HTTP is a stateless protocol, based on object-oriented ideas: With update of the ASP (active server pages) but any realistic Web interface—a .NET you can build “assemblies,” each technology available on Windows. It is a shopping basket, for example—must consisting of a number of classes with new development that provides tools for retain client information from one well-defined interfaces. The model is quite building smart Web sites with extensive page display to the next. ASP.NET different from COM, although it provides associated programming facilities. An maintains session state without stor- a transition path; its major attractions are ASP.NET demo at http://dotnet.eiffel. ing client information on the server, its simplicity and the absence of an IDL com, Interactive Software Engineering’s thereby freeing developers from (Interface Description Language). Web site devoted to Eiffel under .NET, using cumbersome manual tech- Object model. The object model pro- illustrates some of the framework’s most niques such as URL encoding, hid- vides the conceptual basis on which attractive aspects. den fields, and cookies. It can everything else rests, in particular, .NET’s accomplish this both on a single OO type system. The common language • ASP.NET’s Web controls provide a server and across Web farms. specification defines restrictions ensuring user interface similar to what is pos- • Through its connection to ADO. language operability. sible in today’s non-Web GUI envi- NET, which handles database con- Common language runtime. The com- ronments and far beyond what nections, ASP.NET enables setting mon language runtime provides the basic HTML offers as a default. From up part of a Web page to reflect the August 2001 93 Software Technologies contents of a database table directly, of .NET assemblies (program elements), all .NET code is subject to verifica- without manual intervention.
Load more

Recommended publications
  • Data Driven Software Engineering Track
    Judith Bishop Microsoft Research 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 C# 1.0 C# 2.0 C# 3.0 C#4.0 Spec#1.0 Spec# Code CodeCont .5 1.0.6 Contracts racts 1.4 Java 1.5 F# Java 6 F# in VS F# C Ruby on LINQ Python Rails 3.0 Firefox 2 Firefox 3 IE6 Safari 1 IE7 Safari 4 IE8 Safari 5 Windows Windows DLR beta Windows DLR 1.0 XP Vista 7 .NET Rotor Mono 1.0 .NET 2 Rotor 2.0 .NET 3.5 .Net 4.0 Mac OS Ubuntu Mac OS Mac OSX Mac OS X Linux X Intel Leopard XSnow. VS 2003 VS 2005 VS2008 VS2010 Eclipse Eclipse Eclipse 1.0 3.0 3.6 Advantages Uses • Rapid feedback loop (REPL) • Scripting applications • Simultaneous top-down and • Building web sites bottom-up development • Test harnesses • Rapid refactoring and code • Server farm maintenance changing • One-off utilities or data • Easy glue code crunching C# 1.0 2001 C# 2.0 2005 C# 3.0 2007 C# 4.0 2009 structs generics implicit typing dynamic lookup properties anonymous anonymous types named and foreach loops methods object and array optional autoboxing iterators initializers arguments delegates and partial types extension COM interop events nullable types methods, variance indexers generic lambda operator delegates expressions overloading query expressions enumerated types (LINQ) with IO in, out and ref parameters formatted output API Serializable std generic Reflection delegates The dynamic language runtime (DLR) is a runtime environment that adds a set of services for dynamic languages – and dynamic featues of statically typed languages – to the common language runtime (CLR) • Dynamic Lookup • Calls, accesses and invocations bypass static type checking and get resolved at runtime • Named, default and optional parameters • COM interop • Variance • Extends type checking in generic types • E.g.
    [Show full text]
  • COPYRIGHTED MATERIAL ➤➤ Chapter 11: Language Integrated Query
    PART I The C# Language ➤➤ CHAPtER 1: .NET Architecture ➤➤ CHAPtER 2: Core C# ➤➤ CHAPtER 3: Objects and Types ➤➤ CHAPtER 4: Inheritance ➤➤ CHAPtER 5: Generics ➤➤ CHAPtER 6: Arrays and Tuples ➤➤ CHAPtER 7: Operators and Casts ➤➤ CHAPtER 8: Delegates, Lambdas, and Events ➤➤ CHAPtER 9: Strings and Regular Expressions ➤➤ CHAPtER 10: Collections COPYRIGHTED MATERIAL ➤➤ CHAPtER 11: Language Integrated Query ➤➤ CHAPtER 12: Dynamic Language Extensions ➤➤ CHAPtER 13: Asynchronous Programming ➤➤ CHAPtER 14: Memory Management and Pointers ➤➤ CHAPtER 15: Reflection ➤➤ CHAPtER 16: Errors and Exceptions c01.indd 1 22-01-2014 07:50:30 c01.indd 2 22-01-2014 07:50:30 1 .NET Architecture WHAt’S IN THiS CHAPtER? ➤➤ Compiling and running code that targets .NET ➤➤ Advantages of Microsoft Intermediate Language (MSIL) ➤➤ Value and reference types ➤➤ Data typing ➤➤ Understanding error handling and attributes ➤➤ Assemblies, .NET base classes, and namespaces CODE DOwNlOADS FOR THiS CHAPtER There are no code downloads for this chapter. THE RElAtiONSHiP OF C# tO .NET This book emphasizes that the C# language must be considered in parallel with the .NET Framework, rather than viewed in isolation. The C# compiler specifically targets .NET, which means that all code written in C# always runs using the .NET Framework. This has two important consequences for the C# language: 1. The architecture and methodologies of C# reflect the underlying methodologies of .NET. 2. In many cases, specific language features of C# actually depend on features of .NET or of the .NET base classes. Because of this dependence, you must gain some understanding of the architecture and methodology of .NET before you begin C# programming, which is the purpose of this chapter.
    [Show full text]
  • COM and .NET Interoperability
    *0112_ch00_CMP2.qxp 3/25/02 2:10 PM Page i COM and .NET Interoperability ANDREW TROELSEN *0112_ch00_CMP2.qxp 3/25/02 2:10 PM Page ii COM and .NET Interoperability Copyright © 2002 by Andrew Troelsen All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. ISBN (pbk): 1-59059-011-2 Printed and bound in the United States of America 12345678910 Trademarked names may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, we use the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. Technical Reviewers: Habib Heydarian, Eric Gunnerson Editorial Directors: Dan Appleman, Peter Blackburn, Gary Cornell, Jason Gilmore, Karen Watterson, John Zukowski Managing Editor: Grace Wong Copy Editors: Anne Friedman, Ami Knox Proofreaders: Nicole LeClerc, Sofia Marchant Compositor: Diana Van Winkle, Van Winkle Design Artist: Kurt Krames Indexer: Valerie Robbins Cover Designer: Tom Debolski Marketing Manager: Stephanie Rodriguez Distributed to the book trade in the United States by Springer-Verlag New York, Inc., 175 Fifth Avenue, New York, NY, 10010 and outside the United States by Springer-Verlag GmbH & Co. KG, Tiergartenstr. 17, 69112 Heidelberg, Germany. In the United States, phone 1-800-SPRINGER, email [email protected], or visit http://www.springer-ny.com. Outside the United States, fax +49 6221 345229, email [email protected], or visit http://www.springer.de.
    [Show full text]
  • Appendixes APPENDIX A
    PART 8 Appendixes APPENDIX A COM and .NET Interoperability The goal of this book was to provide you with a solid foundation in the C# language and the core services provided by the .NET platform. I suspect that when you contrast the object model provided by .NET to that of Microsoft’s previous component architecture (COM), you’ll no doubt be con- vinced that these are two entirely unique systems. Regardless of the fact that COM is now considered to be a legacy framework, you may have existing COM-based systems that you would like to inte- grate into your new .NET applications. Thankfully, the .NET platform provides various types, tools, and namespaces that make the process of COM and .NET interoperability quite straightforward. This appendix begins by examin- ing the process of .NET to COM interoperability and the related Runtime Callable Wrapper (RCW). The latter part of this appendix examines the opposite situation: a COM type communicating with a .NET type using a COM Callable Wrapper (CCW). ■Note A full examination of the .NET interoperability layer would require a book unto itself. If you require more details than presented in this appendix, check out my book COM and .NET Interoperability (Apress, 2002). The Scope of .NET Interoperability Recall that when you build assemblies using a .NET-aware compiler, you are creating managed code that can be hosted by the common language runtime (CLR). Managed code offers a number of ben- efits such as automatic memory management, a unified type system (the CTS), self-describing assemblies, and so forth. As you have also seen, .NET assemblies have a particular internal compo- sition.
    [Show full text]
  • Ultimate C#, .Net Interview Q&AE-Book
    Register your resume: www.terrafirmajobs.com _________________________________________________ www.terrafirmajobs.com Ultimate C#, .Net Interview Q&AE-book Free E-books available with Terra Firma Java Interview Q&A Terra Firma’s Interview Kit Are you stressed at your Desk Restore the rhythm of your life IT Resume writing tips Heart-Care Tips To get these free e-books, email to: [email protected] with the title of the e-book. Copy Right Note You are permitted to freely distribute/print the unmodified version of this issue/e-book/article. We are not attempting to obtain commercial benefit from the valuable work of the authors and the Editor/Publisher claims the ‘fair use’ of copyrighted material. If you think that by publishing a particular material, your copyright has been violated, please let us know. The Editor/Publisher is not responsible for statements or opinions expressed herein nor do such statements necessarily express the views of Editor/Publisher. 1 More Career Tips: http://www.terrafirmajobs.com/ITpros/IT_resources.asp?id=4 ______________________________________________________________________________ Register your resume: www.terrafirmajobs.com _________________________________________________ Index Chapter Name Page 1) C# interview Questions and Answers. 4 1.1) Advance C# interview Questions 2) General Questions 17 2.1 ) General Questions 2.2 ) Methods and Property 2.3) Assembly Questions 2.4) XML Documentation Question 2.5) Debugging and Testing 3) ADO.net and Database Question 26 4) C#, DOT NET, XML, IIS Interview Questions 28 4.1 ) Framework. 4.2 ) COM 4.3 ) OOPS 4.4 ) C# Language Features 4.5 ) Access Specifier 4.6 ) Constructor / Destructor 4.7 ) ADO.net 4.8 ) ASP.net 4.8.1) Session.
    [Show full text]
  • Developing ADO.NET and OLE DB Applications
    DB2 ® DB2 Version 9 for Linux, UNIX, and Windows Developing ADO.NET and OLE DB Applications SC10-4230-00 DB2 ® DB2 Version 9 for Linux, UNIX, and Windows Developing ADO.NET and OLE DB Applications SC10-4230-00 Before using this information and the product it supports, be sure to read the general information under Notices. Edition Notice This document contains proprietary information of IBM. It is provided under a license agreement and is protected by copyright law. The information contained in this publication does not include any product warranties, and any statements provided in this manual should not be interpreted as such. You can order IBM publications online or through your local IBM representative. v To order publications online, go to the IBM Publications Center at www.ibm.com/shop/publications/order v To find your local IBM representative, go to the IBM Directory of Worldwide Contacts at www.ibm.com/ planetwide To order DB2 publications from DB2 Marketing and Sales in the United States or Canada, call 1-800-IBM-4YOU (426-4968). When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any way it believes appropriate without incurring any obligation to you. © Copyright International Business Machines Corporation 2006. All rights reserved. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Chapter 1. ADO.NET development for .NET common language runtime (CLR) routines . .57 Supported .NET CLR routine development software 58 DB2 databases . .1 Support for external routine development in ADO.NET application development .
    [Show full text]
  • Dot Net Interview Questions
    Dear Friends, Hi I am satish marwat, this documents contains all the important questions that usually asked during the .NET interview, I had downloaded all the material from the Internet from various websites and collected to form a single film, u will find few repeated questions also, all the material are from the various websites, so I had just bind it into a single file. So for any mistake I am not responsible, this is just for the view purpose. My view was only to collect a material to a single file. Please, if u find any mistake in this file, please contact me to my email address [email protected], so that I can able to correct it. ALL THE BEST Thanks Satish J Satish Marwat Dot Net Web Resources [email protected] 1 Page .NET FRAME WORK Introduction 1.1 What is .NET? .NET is a general-purpose software development platform, similar to Java. At its core is a virtual machine that turns intermediate language (IL) into machine code. High-level language compilers for C#, VB.NET and C++ are provided to turn source code into IL. C# is a new programming language, very similar to Java. An extensive class library is included, featuring all the functionality one might expect from a contempory development platform - windows GUI development (Windows Form s), database access (ADO.NET), web development (ASP.NET), web services, XML etc. 1.2 When was .NET announced? Bill Gates delivered a keynote at Forum 2000, held June 22, 2000, outlining the .NET 'vision'. The July 2000 PDC had a number of sessions on .NET technology, and delegates were given CDs containing a pre-release version of the .NET framework/SDK and Visual Studio.NET.
    [Show full text]
  • Call C# Dll from Php
    Call c# dll from php click here to download PHP has a built-in Windows-only extension called DOTNET that allows you to www.doorway.ru libraries in a PHP application. Note that you'll need to make sure your assemblies are declared as COM visible: [assembly: ComVisible(true)]. Here are two examples. php $stack = new DOTNET("mscorlib", "System. Build it as dll library output type www.doorway.ru framework ver as target. 4. load it to GAC vA. 5. Get public token from assembly list. 6. Put the token, and the class into php code and let Apache run: php $phpdotnet = new DOTNET("ClassLibraryTestPHP, Version=, Culture=neutral. Net assembly and call its methods and access its properties. $obj = new . exercise to try different type of method signature and calling them in php. www.doorway.ru Code . IMPORTANT NOTE: PHP "caches" the dll library, so every time that the dll library is compiled, the php service should be restarted (restart the apache service). A project of mine requires that I call a dll using php via a COM object call: $obj = new COM("www.doorway.ruObj") or die ("Unable to instantiate the COM!"); This call seems to work ok but the moment I try to call a function from the object using: $result = $obj->put_Name("A") ; none of the code after this. I currently have a classic ASP Web Application, it calls www.doorway.ru dll, setting it up as not easy but its possible. This year we will start moving all the ASP code and MS SQL to MySQL and PHP.
    [Show full text]
  • NET Interoperability Guidelines
    CAPE-OPEN Delivering the power of component software and open standard interfaces in Computer-Aided Process Engineering .NET Interoperability Guidelines www.colan.org ARCHIVAL INFORMATION Filename Interoperability.doc Authors CO-LaN consortium Status Internal Date June 2006 Version version 0.70 Number of pages 43 Versioning Version 0.4 edited by Bill Barrett (US EPA) Version 0.5 edited by Michel Pons (CO-LaN) Version 0.6 edited by Lars von Wedel (AixCAPE) Version 0.61 edited by Lars von Wedel (AixCAPE) Version 0.62 proofread by Michel Pons (CO-LaN) Version 0.70 edited by Lars von Wedel and Bill Barrett Additional material Web location Implementation specifications version Comments 2 IMPORTANT NOTICES Disclaimer of Warranty CO-LaN documents and publications include software in the form of sample code. Any such software described or provided by CO-LaN --- in whatever form --- is provided "as-is" without warranty of any kind. CO-LaN and its partners and suppliers disclaim any warranties including without limitation an implied warrant or fitness for a particular purpose. The entire risk arising out of the use or performance of any sample code --- or any other software described by the CAPE-OPEN Laboratories Network --- remains with you. Copyright © 2006 CO-LaN and/or suppliers. All rights are reserved unless specifically stated otherwise. CO-LaN is a non for profit organization established under French law of 1901. Trademark Usage Many of the designations used by manufacturers and seller to distinguish their products are claimed as trademarks. Where those designations appear in CO-LaN publications, and the authors are aware of a trademark claim, the designations have been printed in caps or initial caps.
    [Show full text]
  • Drill Into .NET Framework Internals to See How the CLR Creates Runtime Objects Hanu Kommalapati and Tom Christian
    JIT and Run Drill Into .NET Framework Internals to See How the CLR Creates Runtime Objects Hanu Kommalapati and Tom Christian This article discusses: This article uses the following . SystemDomain, SharedDomain, and technologies: DefaultDomain .NET Framework, C# . Object layout and other memory specifics . Method table layout . Method dispatching Contents Domains Created by the CLR Bootstrap System Domain SharedDomain DefaultDomain LoaderHeaps Type Fundamentals ObjectInstance MethodTable Base Instance Size Method Slot Table MethodDesc Interface Vtable Map and Interface Map Virtual Dispatch Static Variables EEClass Conclusion Since the common language runtime (CLR) will be the premiere infrastructure for building applications in Windows® for some time to come, gaining a deep understanding of it will help you build efficient, industrial-strength applications. In this article, we'll explore CLR internals, including object instance layout, method table layout, method dispatching, interface-based dispatching, and various data structures. We'll be using very simple code samples written in C#, so any implicit references to language syntax should default to C#. Some of the data structures and algorithms discussed will change for the Microsoft® .NET Framework 2.0, but the concepts should largely remain the same. We'll use the Visual Studio® .NET 2003 Debugger and the debugger extension Son of Strike (SOS) to peek into the data structures we discuss in this article. SOS understands CLR internal data structures and dumps out useful information. See the "Son of Strike" sidebar for loading SOS.dll into the Visual Studio .NET 2003 debugger process. Throughout the article, we will describe classes that have corresponding implementations in the Shared Source CLI (SSCLI).
    [Show full text]
  • Code Access Security
    21a Code Access Security Code Access Security (CAS) allows the CLR to create a locked-down or sandboxed environment that prevents code from performing certain kinds of operations (such as reading operating system files, performing reflection, or creating a user interface). The sandboxed environment created by CAS is referred to as a partial trust environment, whereas the normal unrestricted environment is referred to as full trust . CAS was considered strategic in the early days of .NET, as it enabled the following: • Running C# ActiveX controls inside a web browser (like Java applets) • Lowering the cost of shared web hosting by allowing multiple web sites to run inside the same .NET process • Deploying permission-restricted ClickOnce applications via the Internet The first two are no longer relevant, and the third was always of dubious value, because end-users are unlikely to know or understand the consequences of restricted permission sets prior to installation. And while there are other use-cases for CAS, they are more specialized. A further problem is that the sandbox created by CAS is not entirely robust: Microsoft stated in 2015 that CAS should not be relied upon as a mechanism for enforcing security boundaries (and CAS has been largely excluded from .NET Standard 2.0). This is in spite of the improvements to CAS introduced with CLR 4 in 2010. Sandboxing that does not rely on CAS is still well and alive: UWP applications run in a sandbox, as do SQL CLR libraries. These sandboxes are enforced by the operating system or hosted CLR, and are more robust than CAS sandboxes, as well as being simpler to understand and manage.
    [Show full text]
  • Microsoft NET WP Cover Front.Ai
    white paper Rocket U2 Using U2 and Microsoft® .NET Jianfeng Mao Rajan Kumar Rocket ® bluezone.rocketsoftware.com using U2 and Microsoft® .NET............................................................................................................................................. 1 introduction................................................................................................................................................................................................ 3 overview of Microsoft® .NET................................................................................................................................................. 3 what is the .NET framework?.......................................................................................................................................................4 common language runtime (CLR) ...........................................................................................................................................5 Microsoft intermediate language (MSIL)........................................................................................................................5 managed code................................................................................................................................................................................5 unmanaged code..........................................................................................................................................................................5 class
    [Show full text]