1、 Reference numberISO/IEC 23270:2006(E)ISO/IEC 2006Information technology Programming languages C# Technologies de linformation Langages de programmation C# International Organization for Standardization (ISO), 2006. All rights reserved. International Electrotechnical Commission (IEC), 2006. All righ
2、ts reserved. NOT FOR RESALE. National Standard of CanadaCAN/CSA-ISO/IEC 23270:07(ISO/IEC 23270:2006)International Standard ISO/IEC 23270:2006 (second edition, 2006-09-01) has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 23270:07, which has been approved as a NationalStandar
3、d of Canada by the Standards Council of Canada.ISBN 978-1-55436-645-3 November 2007Legal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by theStandards Council of Canada. This process brings together volunte
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32、bility for approving standards asNational Standards of Canada rests with theStandards Council of Canada270 Albert Street, Suite 200Ottawa, Ontario, K1P 6N7CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibilit
33、y of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationCette norme est offerte en anglais seulement pour le moment. La CSA publiera la version enfranais ds quelle sera produite par lorganisme rdacteur.Approved byStandards Council o
34、f CanadaNational Standard of CanadaPublished in November 2007 by Canadian Standards AssociationA not-for-profit private sector organization5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044Visit our Online Store at www.ShopCSA.caCAN/CSA-ISO/IEC 23270:07Info
35、rmation technology Programming languages C#Prepared by International Organization for Standardization/ International Electrotechnical CommissionReviewed byCAN/CSA-ISO/IEC 23270:07 Information technology Programming languages C#November 2007 Canadian Standards Association CSA/3CAN/CSA-ISO/IEC 23270:0
36、7Information technology Programming languages C#CSA PrefaceStandards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (
37、CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada parti
38、cipates in the International Telegraph and Telephone Consultative Committee (ITU-T).This Standard supersedes CAN/CSA-ISO/IEC 23270:04 (adoption of ISO/IEC 23270:2003). At the time of publication, ISO/IEC 23270:2006 is available from ISO and IEC in English only. CSA will publish the French version wh
39、en it becomes available from ISO and IEC.This International Standard was reviewed by the CSA TCIT under the jurisdiction of the Strategic Steering Committee on Information Technology and deemed acceptable for use in Canada. From time to time, ISO/IEC may publish addenda, corrigenda, etc. The CSA TCI
40、T will review these documents for approval and publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update or contact a CSA Sales representative. This Standard has been formally approved, without modification, by the Technical Committee and has been approved as a N
41、ational Standard of Canada by the Standards Council of Canada.November 2007 Canadian Standards Association 2007All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. ISO/IEC material is reprinted with permission. Where
42、 the words “this International Standard” appear in the text, they should be interpreted as “this National Standard of Canada”.Inquiries regarding this National Standard of Canada should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-8
43、00-463-6727 416-747-4000www.csa.caTo purchase CSA Standards and related publications, visit CSAs Online Store at www.ShopCSA.ca or call toll-free 1-800-463-6727 or 416-747-4044.Reference numberISO/IEC 23270:2006(E)ISO/IEC 2006INTERNATIONAL STANDARD ISO/IEC23270Second edition2006-09-01Information tec
44、hnology Programming languages C# Technologies de linformation Langages de programmation C# ISO/IEC 23270:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces wh
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48、ying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.orgii ISO/IEC 2006 All r
49、ights reservedCAN/CSA-ISO/IEC 23270:07ISO/IEC 23270:2006(E) ISO/IEC 2006 All rights reserved iii Table of Contents Foreword xv Introduction xvi1. Scope . 1 2. Conformance . 3 3. Normative references 5 4. Terms and definitions 7 5. Notational conventions 9 6. Acronyms and abbreviations . 11 7. General description. 13 8. Language overview 15 8.1 Getting started . 15 8.2 Types. 16 8.2.1 Predefined types. 17 8.2.2 Conversions 19 8.2.3 Array types. 20 8.2.4 Type system unification . 22 8.3 Variables and parameters
