New Features:

• ImageDraw Architecture - Canvas and Elements
  The new ImageDraw Object Model is very flexible and powerful. ImageDraw controls generate Dynamic Composite Images and the main characters in this scenario are Canvas and Elements.
  
  
  　
  • Canvas is a rectangular area intended for drawing Image and Text Elements. It plays a key role in the ImageDraw architecture because it governs and determines the final size for the output composite image to be generated.
    　
  • Elements are simple graphical objects which are assembled together to create a composite image. All elements are drawn on the Canvas in the order that each of them has in the stack of elements (the Elements property that each ImageDraw control features). In addition, each element can have associated to it zero or more imaging Actions that affect its appearance (more on this later).
    
    　
• Built-in ImageDraw Actions - Imaging Effects
  Most time, Element (ImageElement and TextElement) objects will require some "retouching" such as resizing, scaling, FX effects, etc. Actions are imaging effects that are applied on an Element (ImageElement and/or TextElement) object. Any Element can be "affected" by more than one Action. ImageDraw comes with 25 built-in ready to use Actions.
  
  
  　
• Merging Actions
  As stated before, ImageDraw architecture allows you to apply more than one Action on a given Element (ImageElement or TextElement). The following figures show how the combination of Actions applied on an Element can improve its appearance.
  
  
  　
• Dynamic Image Composition Sample - ASP.NET Live Weather XML RSS Service
  If you have read all info about ImageDraw so far, you had realized that it’s very flexible and powerful. The next figure illustrates how you can use ImageDraw controls to develop an ASP.NET Web Application that features Live Weather info consuming Yahoo! Weather XML RSS service.
  
  
  　
• SQL Server BLOB (Binary Large Object) Data Binding
  ImageDraw controls can be bound to SQL Server BLOB (Binary Large Object) data type allowing you to deliver dynamic images which their contents are stored in that kind of data source. Not only you can deliver BLOB images as is but built-in Imaging Actions can be applied on those items as well, greatly enhancing their appearance without efforts.
  
  
  　
• XML Base64 string Data Binding
  Images or pictures stored in XML Base64 string format, is another Data Binding scenario that ImageDraw controls support out-of-the-box. Just as for SQL Server BLOB scenario, images stored in XML Base64 string format can be rendered as is or with built-in Imaging Actions applied on those items as well, enhancing their appearance without efforts.
  
  
  　
• Manipulate and use Images embedded into ASP.NET Resources (*.RESX)
  ASP.NET 2.0 features new Resources capabilities allowing you, for example, to store image files embedded into RESX files without you need to deploy those files. ImageDraw was designed keeping in mind that feature and thus, you can manipulate and use those embedded images to dynamically create composite images.
  
  
  
  　

ImageDraw的新特色:

• ImageDraw的体系架构—由画布和元素组成
  新的ImageDraw对象模型具有强大功能，并且非常灵活。ImageDraw控件能够生成动态合成图像，画布和元素在这其中起主要作用。
  
  
  　
  • 画布是一块长方形的区域，它可以用于绘制图像和文本元素。它在ImageDraw的体系结构中起着一个非常重要的作用，因为它控制和决定了控件所生成的合成图象最后输出的尺寸。
    　
  • 元素是简单的图形对象，这些图形可以聚集，从而创建一个合成图像。所有元素都按照它们自身存储于Stack（每个ImageDraw控件都具有该属性）中的次序排列在画布上。此外，每个元素可以和能够影响它的外部表现的图像动作相联系。（或者更多）
    　
• 内置的ImageDraw动作—图像效果
  大多数时候，元素（图象元素和文本元素）对象会要求一些“重置”比如重新调整大小，标尺，FX特效等等。动作是应用在一个元素（图象元素或文本元素）上的图像特效。任何元素都可以被几个动作所“作用”。ImageDraw带有25个内置的可以使用的动作。
  
  
  　
• 合并动作
  正如之前表述的那样，ImageDraw体系结构使您可以在一个既定的元素（图象元素或文本元素）上应用几个动作。下面的图形显示了将作用于一个元素上的动作结合在一起，可以提升该元素的外部表现。
  
  
  　
• 动态图像综合实例—ASP.NET Live Weather XML RSS Service
  如果目前您已经阅读了ImageDraw的所有信息，您应该意识到了它是非常灵活和强大的。下面的图形说明了您该如何使用ImageDraw控件来开发一个使用Yahoo！Weather XML RSS服务的具有动态天气信息功能的ASP.NET Web 应用程序
  
  　
• SQL Server BLOB (二进制大对象)数据挖掘
  ImageDraw控件可以被绑定到SQL Server BLOB（二进制大对象）数据类型，使您可以处理那些内容存储在那种类型的数据源中的动态图像。不但您可以处理BLOB图像，内置的图象动作也可以应用在那些图像上，这个功能能够毫不费力地大大提高那些图像的外部表现力。
  
  
  　
• XML Base64 字符串数据绑定
  以XML Base64字符串格式存储的图象或图片，是ImageDraw控件额外支持的另一种数据绑定的方式。正如支持SQL Server BLOB一样，以XML Base64字符串格式存储的图象同样能够被处理，内置的图象动作也可以应用到那些图像上，从而毫不费力地极大提升那些图像的外部表现力。
  
  
  　
• 操作和使用嵌入在ASP.NET资源文件（*.RESX）中的图像
  ASP.NET 2.0具有新的资源功能，例如，它使您可以将图像文件存储到RESX文件中，而无需部署这些文件。ImageDraw能够支持该功能，因此您可以操作和使用那些嵌入的图象来动态创建合成图像。