Visual Studio+C#教程：入门AutoCAD.NET CAD开发

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".Net CAD开发教程"是一本专为CAD初学者设计的高清PDF教程，由Stephen Preton和Autodesk Developer Technical Services Team (DevTech)编著。本书主要讲解如何利用Visual Studio工具，结合C#和VB.NET进行AutoCAD的定制开发。作者从理论到实践，深入剖析了.NET API和Visual Studio的集成应用。首先，该教程介绍了AutoCAD.NET开发者指南的概览，包括章节内容概述和指南的整体组织结构。重点在于对AutoCAD.NET API的详细介绍，包括其组成部分，如图形处理、几何对象操作、用户界面等。读者可以了解到如何通过.NET API访问AutoCAD的功能，并了解如何在.NET环境中利用这些功能来创建自定义插件或应用程序。接着，作者指导读者如何选择合适的Microsoft Visual Studio版本，强调了.NET与COM兼容性的使用以及可能存在的依赖性和限制。此外，书中还提供了如何在.NET环境中替代ActiveX自动化技术，以便更高效地开发AutoCAD插件。在实际操作部分，教程以“Getting Started with Microsoft Visual Studio”为标题，引导读者熟悉Visual Studio的工作环境。这部分涵盖了项目管理的基础，如理解Visual Studio项目结构、定义项目组件（如类模块、窗体）、引用外部库和管理项目信息。作者详细演示了如何创建新项目、打开现有项目或解决方案、保存项目，以及如何在多个项目间切换。这本教程不仅提供了理论知识，还有丰富的实例和步骤，帮助读者逐步掌握如何使用C#和VB.NET语言结合Visual Studio工具进行AutoCAD的定制开发。无论是初学者还是有一定经验的开发者，都能从中找到适合自己的学习资源和实践指导，提升在CAD领域的.NET开发能力。

C#..................................................................................................................................... 363

VBA/ActiveX Code Reference....................................................................................... 364

Use Unicode Characters, Control Codes, and Special Characters........................................... 365

Substitute Fonts....................................................................................................................... 366

Specify an Alternative Default Font................................................................................... 366

Check Spelling......................................................................................................................... 367

6 Dimensions and Tolerances .....................................................................................368

Topics in this section............................................................................................................ 368

Dimensioning Concepts .............................................................................................................. 368

Topics in this section............................................................................................................ 369

Parts of a Dimension ............................................................................................................... 369

Define the Dimension System Variables .................................................................................. 370

VB.NET ............................................................................................................................ 370

C#..................................................................................................................................... 370

VBA/ActiveX Code Reference....................................................................................... 370

Set Dimension Text Styles....................................................................................................... 370

Understand Leader Lines......................................................................................................... 371

Understand Associative Dimensions........................................................................................ 371

Create Dimensions...................................................................................................................... 371

Topics in this section............................................................................................................ 372

Create Linear Dimensions ....................................................................................................... 372

Dimension joglines............................................................................................................ 372

VB.NET ............................................................................................................................ 373

C#..................................................................................................................................... 373

VBA/ActiveX Code Reference....................................................................................... 374

Create a rotated linear dimension..................................................................................... 374

VB.NET ............................................................................................................................ 374

C#..................................................................................................................................... 375

VBA/ActiveX Code Reference....................................................................................... 375

Create Radial Dimensions ....................................................................................................... 376

Create a radial dimension................................................................................................. 377

VB.NET ............................................................................................................................ 377

C#..................................................................................................................................... 377

VBA/ActiveX Code Reference....................................................................................... 378

Create Angular Dimensions ..................................................................................................... 379

Create an angular dimension............................................................................................ 379

VB.NET ............................................................................................................................ 379

C#..................................................................................................................................... 380

VBA/ActiveX Code Reference....................................................................................... 381

Create Jogged Radius Dimensions.......................................................................................... 381

Create a jogged radius dimension .................................................................................... 382

VB.NET ............................................................................................................................ 382

C#..................................................................................................................................... 383

VBA/ActiveX Code Reference....................................................................................... 383

Create Arc Length Dimensions ................................................................................................ 384

Create an arc length dimension ........................................................................................ 384

VB.NET ............................................................................................................................ 384

C#..................................................................................................................................... 385

VBA/ActiveX Code Reference....................................................................................... 386

Create Ordinate Dimensions.................................................................................................... 386

Create an ordinate dimension........................................................................................... 387

VB.NET ............................................................................................................................ 387

C#..................................................................................................................................... 388

VBA/ActiveX Code Reference....................................................................................... 388

Edit Dimensions .......................................................................................................................... 389

Topics in this section............................................................................................................ 390

Override Dimension Text ......................................................................................................... 390

Modify dimension text....................................................................................................... 390

VB.NET ............................................................................................................................ 390

C#..................................................................................................................................... 391

VBA/ActiveX Code Reference....................................................................................... 392

Work with Dimension Styles........................................................................................................ 392

Topics in this section............................................................................................................ 392

Create, Modify, and Copy Dimension Styles............................................................................ 393

Copy dimension styles and overrides ............................................................................... 393

VB.NET ............................................................................................................................ 393

C#..................................................................................................................................... 395

VBA/ActiveX Code Reference....................................................................................... 397

Override the Dimension Style .................................................................................................. 397

Enter a user-defined suffix for an aligned dimension......................................................... 401

VB.NET ............................................................................................................................ 401

C#..................................................................................................................................... 402

VBA/ActiveX Code Reference....................................................................................... 403

Dimension in Model Space and Paper Space ............................................................................. 403

Create Leaders and Annotation................................................................................................... 404

Topics in this section............................................................................................................ 404

Create Leader Lines ................................................................................................................ 404

Create a leader line .......................................................................................................... 405

VB.NET ............................................................................................................................ 405

C#..................................................................................................................................... 405

VBA/ActiveX Code Reference....................................................................................... 406

Add the Annotation to a Leader ............................................................................................... 406

Leader Associativity................................................................................................................. 407

Associate a leader to the annotation................................................................................. 407

VB.NET ............................................................................................................................ 407

C#..................................................................................................................................... 408

VBA/ActiveX Code Reference....................................................................................... 409

Edit Leader Associativity.......................................................................................................... 410

Edit Leaders ............................................................................................................................ 410

Use Geometric Tolerances.......................................................................................................... 410

Topics in this section............................................................................................................ 410

Create Geometric Tolerances.................................................................................................. 411

Create a geometric tolerance............................................................................................ 411

VB.NET ............................................................................................................................ 411

C#..................................................................................................................................... 412

VBA/ActiveX Code Reference....................................................................................... 412

Edit Geometric Tolerances ...................................................................................................... 413

7 Work in Three-Dimensional Space ...........................................................................414

Topics in this section............................................................................................................ 414

Specify 3D Coordinates............................................................................................................... 414

Define and query the coordinates for 2D and 3D polylines................................................ 414

VB.NET ............................................................................................................................ 414

C#..................................................................................................................................... 416

VBA/ActiveX Code Reference....................................................................................... 417

Define a User Coordinate System ............................................................................................... 418

Create a new UCS, make it active, and translate the coordinates of a point into the UCS

coordinates....................................................................................................................... 419

VB.NET ............................................................................................................................ 419

C#..................................................................................................................................... 420

VBA/ActiveX Code Reference....................................................................................... 422

Convert Coordinates ................................................................................................................... 423

Translate OCS coordinates to WCS coordinates .............................................................. 424

VB.NET ............................................................................................................................ 424

C#..................................................................................................................................... 425

VBA/ActiveX Code Reference....................................................................................... 427

Create 3D Objects....................................................................................................................... 428

Topics in this section............................................................................................................ 428

Create Wireframes................................................................................................................... 428

Create Meshes ........................................................................................................................ 428

Create a polygon mesh..................................................................................................... 429

VB.NET ............................................................................................................................ 429

C#..................................................................................................................................... 430

VBA/ActiveX Code Reference....................................................................................... 431

Create Polyface Meshes.......................................................................................................... 432

Create a polyface mesh.................................................................................................... 432

VB.NET ............................................................................................................................ 432

C#..................................................................................................................................... 433

VBA/ActiveX Code Reference....................................................................................... 435

Create Solids........................................................................................................................... 435

Create a wedge solid........................................................................................................ 436

VB.NET ............................................................................................................................ 436

C#..................................................................................................................................... 437

VBA/ActiveX Code Reference....................................................................................... 438

Edit in 3D .................................................................................................................................... 438

Topics in this section............................................................................................................ 438

Rotate in 3D............................................................................................................................. 438

Create a 3D box and rotate it about an axis...................................................................... 439

VB.NET ............................................................................................................................ 439

C#..................................................................................................................................... 440

VBA/ActiveX Code Reference....................................................................................... 441

Array in 3D............................................................................................................................... 441

Create a 3D rectangular array .......................................................................................... 441

VB.NET ............................................................................................................................ 441

C#..................................................................................................................................... 444

VBA/ActiveX Code Reference....................................................................................... 446

Mirror Objects Along a Plane ................................................................................................... 447

Mirror in 3D....................................................................................................................... 447

VB.NET ............................................................................................................................ 447

C#..................................................................................................................................... 448

VBA/ActiveX Code Reference....................................................................................... 449

Edit 3D Solids.............................................................................................................................. 450

Find the interference between two solids.......................................................................... 450

VB.NET ............................................................................................................................ 450

C#..................................................................................................................................... 451

VBA/ActiveX Code Reference....................................................................................... 452

Slice a solid into two solids ............................................................................................... 453

VB.NET ............................................................................................................................ 453

C#..................................................................................................................................... 454

VBA/ActiveX Code Reference....................................................................................... 455

8 Define Layouts and Plot ............................................................................................456

Topics in this section............................................................................................................ 456

Model Space and Paper Space................................................................................................... 456

Layouts ....................................................................................................................................... 456

Topics in this section............................................................................................................ 457

Layouts and Blocks.................................................................................................................. 457

Plot Settings ............................................................................................................................ 457

Layout Settings........................................................................................................................ 457

Topics in this section............................................................................................................ 458

Paper Size and Units............................................................................................................ 458

Plot Origin ............................................................................................................................ 458

Plot Area .............................................................................................................................. 458

Plot Scale............................................................................................................................. 459

Lineweight Scale.................................................................................................................. 460

Plot Device........................................................................................................................... 460

Query and Set Layout Settings............................................................................................. 460

VB.NET ............................................................................................................................ 460

C#..................................................................................................................................... 461

VBA/ActiveX Code Reference....................................................................................... 462

Viewports .................................................................................................................................... 463

Topics in this section............................................................................................................ 463

Floating Viewports ................................................................................................................... 463

To toggle between Model and Paper space...................................................................... 464

VB.NET ............................................................................................................................ 464

C#..................................................................................................................................... 465

VBA/ActiveX Code Reference....................................................................................... 465

Create Paper Space Viewports................................................................................................ 466

Create and enable a floating viewport............................................................................... 466

VB.NET ............................................................................................................................ 466

C#..................................................................................................................................... 467

VBA/ActiveX Code Reference....................................................................................... 468

Create four floating viewports ........................................................................................... 469

VB.NET ............................................................................................................................ 469

C#..................................................................................................................................... 470

VBA/ActiveX Code Reference....................................................................................... 472

Change Viewport Views and Content....................................................................................... 473

Scale Views Relative to Paper Space...................................................................................... 473

Scale Pattern Linetypes in Paper Space.................................................................................. 474

Use Shaded Viewports ............................................................................................................ 474

Plot Your Drawing ....................................................................................................................... 475

Topics in this section............................................................................................................ 475

Plot from Model Space............................................................................................................. 475

Plot the extents of the Model layout .................................................................................. 476

VB.NET ............................................................................................................................ 476

C#..................................................................................................................................... 478

VBA/ActiveX Code Reference....................................................................................... 480

Plot from Paper Space............................................................................................................. 481

9 Use Events..................................................................................................................482

Topics in this section............................................................................................................ 482

Understand the Events in AutoCAD ............................................................................................ 482

Guidelines for Event Handlers..................................................................................................... 483

Register and Unregister Events................................................................................................... 484

Register an event ............................................................................................................. 484

VB.NET ............................................................................................................................ 484

C#..................................................................................................................................... 484

Unregister an event .......................................................................................................... 484

VB.NET ............................................................................................................................ 485

C#..................................................................................................................................... 485

Handle Application Events........................................................................................................... 485

Enable an Application object event................................................................................... 486

VB.NET ............................................................................................................................ 486

C#..................................................................................................................................... 487

VBA/ActiveX Code Reference....................................................................................... 487

Handle Document Events............................................................................................................ 488

Enable a Document object event ...................................................................................... 489

VB.NET ............................................................................................................................ 489

C#..................................................................................................................................... 489

VBA/ActiveX Code Reference....................................................................................... 490

Handle DocumentCollection Events ............................................................................................ 490

Enable a DocumentCollection object event....................................................................... 492

VB.NET ............................................................................................................................ 492

C#..................................................................................................................................... 492

VBA/ActiveX Code Reference....................................................................................... 493

Handle Object Events.................................................................................................................. 493

Enable an Object event .................................................................................................... 494

VB.NET ............................................................................................................................ 495

C#..................................................................................................................................... 496

VBA/ActiveX Code Reference....................................................................................... 497

Register COM Based Events with .NET ...................................................................................... 498

Register a COM based event............................................................................................ 498

VB.NET ............................................................................................................................ 498

C#..................................................................................................................................... 499

VBA/ActiveX Code Referemce...................................................................................... 499

10 Develop Applications with VB.NET and C# ..........................................................501

Topics in this section............................................................................................................ 501

Handle Errors.............................................................................................................................. 501

Topics in this section............................................................................................................ 501

Define Application Error Types ................................................................................................ 502

Trap Runtime Errors ................................................................................................................ 502

Topics in this section............................................................................................................ 502

Use Try Statements ............................................................................................................. 503

Try-Catch Statement......................................................................................................... 503

Try-Finally Statement........................................................................................................ 503

Try-Catch-Finally Statement ............................................................................................. 503

Test error handling without and with the Try-Catch-Finally statement ............................... 503

VB.NET ............................................................................................................................ 504

C#..................................................................................................................................... 504

Use the Exception Object..................................................................................................... 505

On Error Statements (VB.NET) ............................................................................................ 506

On Error Resume Next statement..................................................................................... 506

On Error GoTo Label statement........................................................................................ 506

Use the Err object with trapped errors .............................................................................. 506

Compare Error Handlers in VBA or VB to .NET.................................................................... 507

On Error - VBA ................................................................................................................. 507

Try-Catch - VB.NET.......................................................................................................... 507

Respond to User Input Errors .................................................................................................. 508

Distribute Your Application .......................................................................................................... 508

To generate a Release build for a .NET assembly........................................................ 508

Load a .NET assembly ..................................................................................................... 508

Demand load a .NET application ...................................................................................... 509

VB.NET ............................................................................................................................ 509

C#..................................................................................................................................... 511

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