web service中,怎么不能用System.Drawing;

zhangxingguo 2006-04-21 10:04:24
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zhangxingguo 2006-04-22
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我想将一个图片返回给客户。。。。
stlwj 2006-04-22
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web services是一个服务来的,不能考虑界面性的功能。
scegg 2006-04-22
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你在引用中添加上就可以了……
.net 导入excel到数据库 先上传Excel文件,然后用OleDB连接Excel文件,将Excel数据导入Dataset,再将Dataset数据导入数据库,最后再将上传的Excel文件删除。 前台:
 
请选择要导入的文件 <INPUT id="FileExcel" 300px" type="file" size="42" name="FilePhoto" runat="server"><FONT color="red">
后台: using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.IO; using System.Data.SqlClient; using System.Data.OleDb; using System.Text; namespace GZPI.Service.AgenciesChannel { /// /// ImportXlsToData 的摘要说明。 /// public class ImportXlsToDataBase : GZPI.Service.AgenciesChannel.AgenciesBasePage { protected System.Web.UI.HtmlControls.HtmlInputFile FileExcel; protected System.Web.UI.WebControls.Button BtnImport; protected System.Web.UI.WebControls.Label LblMessage; protected ZsoftDataAccess.DataAccess _da = new ZsoftDataAccess.DataAccess(); private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 } #region Web 窗体设计器生成的代码 override protected void OnInit(EventArgs e) { // // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); } /// /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// private void InitializeComponent() { this.BtnImport.Click += new System.EventHandler(this.BtnImport_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion //// /// 从Excel提取数据--》Dataset ///
EN。抱歉,我找不到地方上传它,暂时用用这个地方吧。压缩包包含的文件: TSCC.exe : 解码器TechSmith Screen Capture Codec (TSCC). 如果要在其它播放工具放演示的AVI,需要安装该解码器 CamPlay.exe : Camtasia 专用的播放器。用它播放,不需要先安装解器。1. 使用FCL/VCL下的组件设计与ASP.NET下的组件设计器的相似性对照--------ASP.NET.User.Control.DemoDEMO.aviUser.Control.DemoDEMO.avi--------在两种方式下设置组件的操作是大致相同的。在User.Control.Demo这个DEMO,我特地做了两个错误的操作。第一个错误操作是在将UserControl.pas这个单元加入Package1,便立即开始编译,这时会提示“File not Found : ‘System.Drawing.dcuii”,这是因为Delphi .NET缺省时不会添加对System.Windows.Forms/System.Data的引用。因此需要添加这些引用。随后Package1.dll将被编译通过。第二个错误操作是试图通过“Install VCL Package”来安装刚才的Package1.dll。这时会发现在窗体上添加User Control失败。这是因为该组件并没有添加成功。更具体的原因是因为Package1.dll没有在搜索路径上。因此,在主应用程序添加对Package1.dll的引用后,控件可以向窗体上添加了。之所以留下这两个错误的操作,是因为我相信这是初次使用Delphi .NET的用户一定会遇到的。希望这个DEMO的出现,能让大家入手快一些。^.^2. 使用Windows Forms作为Client开发Web Services应用 (这个DEMO在BorCon上成功完成,但我认为有再做一次的价值)--------ASP.NET.Web.Service.Demo--------这个DEMO展示了Client与Web Services交互的基本代码。Service使用的是Delphi.NET生成的框架的缺省演示代码,它将返回一个“Hello World”字符串。同样的,Services也可以返回xml描述的数据库等等,但基本代码结构是一样的。Client使用了ASP.NET和VCL Forms两种实现方式。我在BorCon上做的是WindowsForms,所以就不再做了。但代码是完全一样的。从DEMO上也可以看出这一点。按下Button,你应该注意到Caption的变化。但是,重要的是:这个字符串是从Web上远程获取的,但是调用代码时与在本地一样!3. Delphi .NET版本的Web Browser开发(使用InterOp实现Win32代码调用)--------ActiveX.Web.Browser.DemoDEMO.avi--------有想到过InterOp原来是这么简单的吗?看看.NET Framework关于它的文档,你会哭的。但是,Delphi .NET……太简单了!
★ 程序说明:★ ☆ 网站技术:☆ 架构体系: 数据访问层 (Data Access Layer) (LINQ to SQL 实现) 存储库层 (Repository Layer) (Repository 模式 实现) 服务层 (Service Layer) 表示层 (Presentation Layer) (MVP (Model - View - Presenter) 模式 实现) 底层使用技术: 01. 控制反转 (Inversion of Control) (StructureMap 实现) 02. 日志技术 (Log4Net 实现) 03. 缓存技术 (标准) (System.Web.Caching 实现) 04. 缓存技术 (高级) (EnyimCache 实现) 05. 全文检索技术 (Lucene.Net 实现) 06. 扩展方法 (Extends Method) 07. 动态验证码 (System.Drawing 实现) 08. 密码加密 (System.Security.Cryptography 实现) 09. 发送邮件 (实时) (System.Net.Mail 实现) 10. 发送邮件 (队列) (MSMQ 实现) 页面使用技术: 01. 模板页 (MasterPage) 02. 主题 (Theme) 03. 皮肤 (Skin) 04. 用户自定义控件 (UserControl) 05. 站点地图 (Web.sitemap 实现) 06. URL重定向 (UrlRewrite) 07. 可视化HTML编辑器 (Xinha Editor) 08. 多文件上传 (Flash 实现) 09. 星级评分 (AjaxControlToolkit Rating 实现) ☆ 网站模块:☆ - 用户账号 模块 (User Accounts) (功能:账号注册、账号登陆、密码找回、编辑账号信息、验证邮箱真实性) - 用户资料 模块 (User Profiles) (功能:资料管理、资料显示、上传头像、设置隐私级别、动态消息显示墙) - 好友 模块 (Friends) (功能:查找好友、站内邀请好友、邮件邀请好友、导入好友邮箱、添加好友关系、删除好友关系、微博心情说说) - 站内信 模块 (Messages) (功能:发送站内信、删除站内信,回复站内信) - 图片相册 模块 (Albums) (功能:创建相册、编辑相册、删除相册、上传图片、编辑图片、删除图片) - 博客 模块 (Blogs) (功能:创建博客、编辑博客、删除博客) - 论坛 模块 (Forums) (功能:创建帖子、回复帖子) - 圈子 模块 (Groups) (功能:创建圈子、申请加入圈子、审核加入申请、参与圈子话题讨论) - 评论/标签/评级 模块 (Commenting/Tagging/Rating) (功能:发表评论,添加标签、添加评级) - 网站监控 模块 (Moderation) (功能:敏感词过滤、恶意脚本过滤、非法内容举报、非法内容审核) ☆ 管理员账号:☆ - 用户名:Lenovo - 密 码:88888888 ☆ 开发环境:☆ - [开发语言 版本] C# 3.0 - [.Net Framework 版本] 3.5 - [Visual Studio 版本] Microsoft Visual Studio 2008 with SP1 - [SQL Server 版本] Microsoft SQL Server 2008 R2 with SP2 ☆ 文件内容:☆ - [电子书] - [数据库] - [源代码] - [程序运行说明]
Contents xvii Web Forms 133 Intellisense 134 Customizing the IDE 135 Customizing the Code Editor 135 Customizing Shortcut Keys 135 Customizing the Toolbars 136 Exercise 3.4 Adding a New Toolbar to the Existing Set 136 Exercise 3.5 Adding Commands to Toolbars 137 Customizing Built-In Commands 137 Exercise 3.6 Creating an Alias 138 Customizing the Start Page 139 Accessibility Options 141 Summary 142 Solutions Fast Track 142 Frequently Asked Questions 143 Chapter 4 Common Language Runtime 145 Introduction 146 Component Architecture 148 Managed Code versus Unmanaged Code 150 Interoperability with Managed Code 152 System Namespace 153 File I/O 155 Drawing 156 Printing 157 Common Type System 158 Type Casting 160 Garbage Collection 163 Object Allocation/Deallocation 164 Close/Dispose 165 Summary 166 Solutions Fast Track 167 Frequently Asked Questions 168 Developing & Deploying… Embrace Your Parameters VB.NET is insistent upon enclosing parameters of function calls within parentheses regardless of whether we are returning a value or whether we are using the Call statement. It makes the code much more readable and is a new standard for VB programmers that is consistent with the standard that nearly all other languages adopted long ago. 153_VBnet_TOC 8/16/01 1:12 PM Page xvii xviii Contents Chapter 5 .NET Programming Fundamentals 171 Introduction 172 Variables 173 Constants 175 Structures 176 Program Flow Control 178 If…Then…Else 178 Select Case 182 While Loops 184 For Loops 186 Arrays 187 Declaring an Array 188 Multidimensional Arrays 189 Dynamic Arrays 191 Functions 192 Object Oriented Programming 196 Inheritance 196 Polymorphism 197 Encapsulation 197 Classes 198 Adding Properties 198 Adding Methods 200 System.Object 201 Constructors 201 Overloading 202 Overriding 203 Shared Members 205 String Handling 206 Error Handling 210 Summary 213 Solutions Fast Track 214 Frequently Asked Questions 217 NOTE When porting Visual Basic applications to Visual Basic .NET, be careful of the lower bounds of arrays. If you are using a for loop to iterate through the array, and it is hard-coded to initialize the counter at 1, the first element will be skipped. Remember that all arrays start with the index of 0. 153_VBnet_TOC 8/16/01 1:12 PM Page xviii Contents xix Chapter 6 Advanced Programming Concepts 219 Introduction 220 Using Modules 221 Utilizing Namespaces 222 Creating Namespaces 222 Understanding the Imports Keyword 226 Implementing Interfaces 229 Delegates and Events 232 Simple Delegates 235 Multicast Delegates 236 Event Programming 236 Handles Keyword 236 Language Interoperability 237 File Operations 239 Directory Listing 239 Data Files 241 Text Files 243 Appending to Files 246 Collections 246 The Drawing Namespace 248 Images 253 Printing 256 Understanding Free Threading 262 SyncLock 263 Summary 265 Solutions Fast Track 265 Frequently Asked Questions 267 Chapter 7 Creating Windows Forms 269 Introduction 270 Application Model 270 Properties 271 Manipulating Windows Forms 275 Properties of Windows Forms 275 Methods of Windows Forms 276 Creating Windows Forms 287 What Are Collections? Collectionsare groups of like objects. Collections are similar to arrays, but they don’t have to be redimensioned. You can use the Addmethod to add objects to a collection. Collections take a little more code to create than arrays do, and sometimes accessing a collection can be a bit slower than an array, but they offer significant advantages because a collection is a group of objects whereby an array is a data type. 153_VBnet_TOC 8/16/01 1:12 PM Page xix xx Contents Displaying Modal Forms 288 Displaying Modeless Forms 289 Displaying Top-Most Forms 289 Changing the Borders of a Form 289 Resizing Forms 291 Setting Location of Forms 292 Form Events 294 Creating Multiple Document Interface Applications 297 Creating an MDI Parent Form 297 Creating MDI Child Forms 298 Exercise 7.1 Creating an MDI Child Form 298 Determining the Active MDI Child Form 299 Arranging MDI Child Forms 299 Adding Controls to Forms 300 Anchoring Controls on Forms 301 Docking Controls on Forms 303 Layering Objects on Forms 304 Positioning Controls on Forms 304 Dialog Boxes 305 Displaying Message Boxes 306 Common Dialog Boxes 306 The OpenFileDialog Control 306 The SaveFileDialog Control 309 The FontDialog Control 311 The ColorDialog Control 313 The PrintDialog Control 315 The PrintPreviewDialog Control 316 The PageSetupDialog Control 321 Creating Dialog Boxes 322 Creating and Working with Menus 323 Adding Menus to a Form 323 Exercise 7.2 Adding a Menu to a Form at Design Time 323 Creating Dialog Boxes 1.Create a form. 2.Set the BorderStyle property of the form to FixedDialog. 3.Set the ControlBox, MinimizeBox, and MaximizeBox properties of the form to False. 4.Customize the appearance of the form appropriately. 5.Customize event handlers in the Code window appropriately. 153_VBnet_TOC 8/16/01 1:12 PM Page xx Contents xxi Dynamically Creating Menus 326 Exercise 7.3 Adding a Menu to a Form at Design Time 326 Adding Status Bars to Forms 328 Adding Toolbars to Forms 330 Data Binding 332 Simple Data Binding 332 Complex Data Binding 333 Data Sources for Data Binding 333 Using the Data Form Wizard 334 Using the Windows Forms Class Viewer 338 Using the Windows Forms ActiveX Control Importer 338 Summary 340 Solutions Fast Track 340 Frequently Asked Questions 344 Chapter 8 Windows Forms Components and Controls 347 Introduction 348 Built-In Controls 348 Label Control 351 LinkLabel Control 354 TextBox Control 357 Button Control 361 CheckBox Control 364 RadioButton Control 365 RichTextBox Control 367 TreeView Control 369 ListBox Control 371 CheckedListBox Control 374 ListView Control 376 ComboBox Control 381 DomainUpDown Control 384 NumericUpDown Control 386 PictureBox Control 388 TrackBar Control 389 Adding Items to a Combo Box at Design-Time 1.Select the ComboBox control on the form. 2.If necessary, use the Viewmenu to open the Properties window. 3.In the Properties window, click the Itemsproperty, then click the ellipsis. 4.In String Collection Editor, type the first item, then press Enter. 5.Type the next items, pressing Enterafter each item. 6.Click OK. 153_VBnet_TOC 8/16/01 1:13 PM Page xxi xxii Contents DateTimePicker Control 391 Panel Control 394 GroupBox Control 396 TabControl Control 397 Creating Custom Windows Components 399 Exercise 8.1:Creating a Custom Windows Component 399 Creating Custom Windows Controls 403 Exercise 8.2:Creating a Custom Windows Control 404 Summary 407 Solutions Fast Track 407 Frequently Asked Questions 408 Chapter 9 Using ADO.NET 409 Introduction 410 Overview of XML 411 XML Documents 411 XSL 411 XDR 412 XPath 412 Understanding ADO.NET Architecture 412 Differences between ADO and ADO.NET 414 XML Support 414 ADO.NET Configuration 415 Remoting in ADO.NET 415 Maintaining State 415 Using the XML Schema Definition Tool 416 Connected Layer 417 DataProviders 418 Connection Strings 418 Exercise 9.1 Creating a Connection String 419 Command Objects 421 DataReader 425 DataSet 426 XML Documents XML documents are the heart of the XML standard. An XML document has at least one element that is delimited with one start tag and one end tag. XML documents are similar to HTML, except that the tags are made up by the author. 153_VBnet_TOC 8/16/01 1:13 PM Page xxii Contents xxiii Disconnected Layer 427 Using DataSet 428 Relational Schema 428 Collection of Tables 430 Data States 431 Populating with the DataSet Command 432 Populating with XML 433 Populating Programmatically 434 Using the SQL Server Data Provider 435 TDS 436 Exercise 9.2 Using TypedDataSet 437 Remoting 439 Data Controls 440 DataGrid 440 Exercise 9.3 Using TypedDataSet and DataRelation 441 DataList 446 Repeater 450 Summary 454 Solutions Fast Track 454 Frequently Asked Questions 457 Chapter 10 Developing Web Applications 459 Introduction 460 Web Forms 461 A Simple Web Form 462 Exercise 10.1 Creating a Simple Web Form 462 How Web Forms Differ from Windows Forms 464 Why Web Forms Are Better Than Classic ASP 465 Adding Controls to Web Forms 467 Exercise 10.2 Adding Web Controls to a Web Form 468 Code Behind 473 NOTE Web form controls not only detect browsers such as Internet Explorer and Netscape, but they also detect devices such as Palm Pilots and cell phones and generate appropriate HTML accordingly. 153_VBnet_TOC 8/16/01 1:13 PM Page xxiii xxiv Contents How Web Form Controls Differ from Windows Form Controls 476 ASP.NET Server Controls 476 Intrinsic Controls 476 Bound Controls 478 Exercise 10.3 Using the DataGrid Control 478 Exercise 10.4 Customizing DataGrid Control 482 Custom Controls 487 Validation Controls 488 Exercise 10.5 Using the Validation Controls 489 Creating Custom Web Form Controls 492 Exercise 10.6 A Simple Custom Control 493 Exercise 10.7 Creating a Composite Custom Control 497 Web Services 504 How Web Services Work 505 Developing Web Services 505 Exercise 10.8 Developing Web Services 507 Web Service Utilities 509 Service Description Language 509 Discovery 510 Proxy Class 510 Consuming Web Services from Web Forms 511 Exercise 10.9 Consuming Web Services from Web Forms 511 Using Windows Forms in Distributed Applications 513 Exercise 10.10 Consuming Web Services from Windows Forms 514 Exercise 10.11 Developing a Sample Application 516 Summary 519 Solutions Fast Track 519 Frequently Asked Questions 521 153_VBnet_TOC 8/16/01 1:13 PM Page xxiv Contents xxv Chapter 11 Optimizing, Debugging, and Testing 523 Introduction 524 Debugging Concepts 524 Debug Menu 528 Watches 529 Breakpoints 531 Exceptions Window 532 Command Window 534 Conditional Compilation 536 Trace 538 Assertions 540 Code Optimization 541 Finalization 542 Transitions 542 Parameter Passing Methods 542 Strings 543 Garbage Collection 544 Compiler Options 544 Optimization Options 544 Output File Options 544 .NET Assembly Options 545 Preprocessor Options 546 Miscellaneous Options 546 Testing Phases and Strategies 546 Unit Testing 547 Integration Testing 547 Beta Testing 547 Regression Testing 548 Stress Testing 548 Monitoring Performance 548 Summary 550 Solutions Fast Track 551 Frequently Asked Questions 552 What Are Watches? Watchesprovide us with a mechanism where we can interact with the actual data that is stored in our programs at runtime. They allow us to see the values of variables and the values of properties on objects. In addition to being able to view these values, you can also assign new values. 153_VBnet_TOC 8/16/01 1:13 PM Page xxv xxvi Contents Chapter 12 Security 553 Introduction 554 Security Concepts 555 Permissions 555 Principal 556 Authentication 557 Authorization 557 Security Policy 558 Type Safety 558 Code Access Security 558 .NET Code Access Security Model 559 Stack Walking 559 Code Identity 561 Code Groups 562 Declarative and Imperative Security 564 Requesting Permissions 565 Demanding Permissions 570 Overriding Security Checks 572 Custom Permissions 576 Role-Based Security 578 Principals 578 WindowsPrincipal 579 GenericPrincipal 580 Manipulating Identity 581 Role-Based Security Checks 583 Security Policies 585 Creating a New Permission Set 588 Modifying the Code Group Structure 593 Remoting Security 600 Cryptography 600 Security Tools 603 Summary 606 Solutions Fast Track 607 Frequently Asked Questions 611 Within the .NET Framework, Three Namespaces Involve Cryptography 1.System.Security .CryptographyThe most important one; resembles the CryptoAPI functionalities. 2.System.Security .Cryptography.X509 certificatesRelates only to the X509 v3 certificate used with Authenticode. 3.System.Security .Cryptography.XmlFor exclusive use within the .NET Framework security system. 153_VBnet_TOC 8/16/01 1:13 PM Page xxvi Contents xxvii Chapter 13 Application Deployment 615 Introduction 616 Packaging Code 617 Configuring the .NET Framework 622 Creating Configuration Files 622 Machine/Administrator Configuration Files 623 Application Configuration Files 625 Security Configuration Files 626 Deploying the Application 629 Common Language Runtime 629 Windows Installer 630 CAB Files 631 Internet Explorer 5.5 632 Resource Files 633 Deploying Controls 637 Summary 639 Solutions Fast Track 640 Frequently Asked Questions 642 Chapter 14 Upgrading Visual Basic Applications to .NET 647 Introduction 648 Considerations Before Upgrading 648 Early Binding of Variables 649 Avoiding Null Propagation 650 Using ADO 651 Using Date Data Type 652 Using Constants 652 Considering Architecture Before Migration 653 Intranet/Internet Applications 653 Internet Information Server (IIS) Applications 654 DHTML Applications 655 ActiveX Documents 655 Client/Server and Multi-Tier Applications 655 Single-Tier Applications 656 Data Access Applications 656 WARNING You should under no circumstance edit the Security.config and Enterprise.config files directly. It is very easy to compromise the integrity of these files. Always use the Code Access Security Policy utility (caspol.exe) or the .NET Configuration tool; these will guard the integrity of the files and will also make a backup copy of the last saved version. 153_VBnet_TOC 8/16/01 1:13 PM Page xxvii xxviii Contents Data Types 657 Variants 657 Integers 658 Dates 658 Boolean 659 Arrays 659 Fixed-Length Strings 660 Windows API Data Types 661 Converting VB Forms to Windows Forms 662 Control Anchoring 664 Keyword Changes 665 Goto 666 GoSub 666 Option Base 666 AND/OR 666 Lset 666 VarPtr 667 StrPtr 667 Def 667 Programming Differences 668 Method Implementation 668 Optional Parameters 668 Static Modifier 669 Return Statement 669 Procedure Calls 670 External Procedure Declaration 671 Passing Parameters 672 ParamArray 672 Overloading 674 References to Unmanaged Libraries 677 Metadata 679 Runtime Callable Wrapper 681 COM Callable Wrapper 682 Properties 684 Working with Property Procedures 684 Control Property Name Changes 685 Default Property 687 Avoiding Null Propagation Nullpropagation means that if Null is used in an expression, the resulting expression is always Null. In previous versions of Visual Basic, the Null value disseminated throughout the expression. 153_VBnet_TOC 8/16/01 1:13 PM Page xxviii Contents xxix Null Usage 690 Understanding Error Handling 690 Exercise 14.1:Using Error Handling 692 Data Access Changes in Visual Basic .NET 693 Dataset and Recordset 694 Application Interoperability 694 Cursor Location 695 Disconnected Access 695 Data Navigation 695 Lock Implementation 696 Upgrading Interfaces 696 Upgrading Interfaces from Visual Basic 6.0 699 Using the Upgrade Tool 703 Exercise 14.2 Using the Upgrade Wizard 703 Summary 708 Solutions Fast Track 709 Frequently Asked Questions 712 Index 713 Contents xiii From the Series Editor xxxi Chapter 1 New Features in Visual Basic .NET 1 Introduction 2 Examining the New IDE 3 Cosmetic Improvements 3 Development Accelerators 5 .NET Framework 6 A Very Brief and Simplified History 6 .NET Architecture 7 ASP.NET 7 Framework Classes 8 .NET Servers 8 Common Language Runtime 8 History 8 Convergence 9 Object-Oriented Language 10 Object-Oriented Concepts 10 Advantages of Object-Oriented Design 11 History of Object Orientation and VB 13 Namespaces 13 Web Applications 13 Web Applications Overview 13 Web Forms 14 Web Services 15 HyperText Transport Protocol 16 Simple Object Access Protocol 17 .NET Architecture .NET Framework ASP.NET Updated ASP Engine Web Forms Engine Framework Classes System.Math, System.Io, System.Data, Etc. Common Language Runtime Memory Management Common Type System Garbage Collection .NET .NET Servers 153_VBnet_TOC 8/16/01 1:12 PM Page xiii xiv Contents Security 17 Type Safety 18 Casting 18 Data Conversion 19 Bitwise Operations 20 New Compiler 20 Compiling an Executable 20 Architecture 21 File Management in Previous Versions of VB 21 File Management 22 Changes from Visual Basic 6.0 23 Variants 23 Variable Lower Bounds 23 Fixed Length Strings 23 NULL Propagation 23 Other Items Removed 24 Function Values 24 Short Circuits 25 Properties and Variables 25 Variable Lengths 25 Get and Set 26 Date Type 26 Default Properties 27 Summary 28 Solutions Fast Track 28 Frequently Asked Questions 31 Chapter 2 The Microsoft .NET Framework 33 Introduction 34 What Is the .NET Framework? 34 Introduction to the Common Language Runtime 35 Using .NET-Compliant Programming Languages 37 Creating Assemblies 39 Using the Manifest 42 Compiling Assemblies 45 Assembly Cache 45 Locating an Assembly 45 153_VBnet_TOC 8/16/01 1:12 PM Page xiv Contents xv Private Assembly Files 51 Shared Assembly Files 51 Understanding Metadata 51 The Benefits of Metadata 52 Identifying an Assembly with Metadata 53 Types 53 Defining Members 54 Using Contracts 54 Assembly Dependencies 55 Unmanaged Assembly Code 55 Reflection 56 Attributes 57 Ending DLL Hell 58 Side-by-Side Deployment 58 Versioning Support 59 Using System Services 60 Exception Handling 60 StackTrace 61 InnerException 61 Message 61 HelpLink 62 Garbage Collection 62 Console I/O 62 Microsoft Intermediate Language 63 The Just-In-Time Compiler 63 Using the Namespace System to Organize Classes 64 The Common Type System 65 Type Safety 68 Relying on Automatic Resource Management 68 The Managed Heap 69 Garbage Collection and the Managed Heap 71 Assigning Generations 77 Utilizing Weak References 77 Security Services 79 Framework Security 80 Granting Permissions 81 NOTE Visualization is still key! Die-hard VB programmers may find themselves having a hard time visualizing all the new concepts in VB.NET (and we all know that proper logic visualization plays a big role in what we do). Something that may help is to think about VB.NET as a completely flexible language that can accommodate Web, console, and desktop use. 153_VBnet_TOC 8/16/01 1:12 PM Page xv xvi Contents Gaining Representation through a Principal 82 Security Policy 83 Summary 85 Solutions Fast Track 85 Frequently Asked Questions 88 Chapter 3 Installing and Configuring VB.NET 91 Introduction 92 Editions 92 Installing Visual Studio .NET 93 Exercise 3.1:Installing Visual Studio .NET 94 Installing on Windows 2000 99 The New IDE 100 Integrated Development Environment Automation Model 100 Add-Ins 104 Exercise 3.2 Creating an Add-In Using the Add-In Wizard 105 Wizards 109 Macros 109 Home Page 110 Project Options 112 Toolbox 116 Child Windows 120 Window Types 122 Arranging Windows 123 Task List 123 Exercise 3.3 Setting Up a Custom Token 124 TaskList Views 124 Locating Code 126 Annotating Code 126 Solution Explorer 127 Properties Window 129 Form Layout Toolbar 130 Hide/Show Code Elements 132 Installing Visual Studio .NET IPhase 1: Installing Windows components IPhase 2: Installing Visual Studio .NET IPhase 3: Checking for service releases 153_VBnet_TOC 8/16/01 1:12 PM Page xvi

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