Essential Chart是一个商业图表控件，他提供全新的数据对象模式，让图表可以和各种数据源轻松结合，Essential Chart的高级样式结构能够轻松表现复杂的多层次格式，企业版本（包含Essential Grouping）更增加了对分组功能的支持

特征：

• 图表数据：
  数据模型独立于其显示元素，这样就提供了一个灵活的数据模型，使得程序开发更加容易。基本的数据模型不受Microsoft数据捆绑界面的约束。核心数据模型对仅适合于图表的数据服务进行定义。从而使得对任何数据源的模型应用更加简单；
   
• 图表外观：
  其外观可以利用多种元素进行控制，图表显示区域的范围可以由其属性进行控制；
   
• 日期处理：
  包含对日期的内置支持，图表中任何序列的数据类型都可以设置为日期时间；
   
• 自动范围：
  自动计算任何范围的数目和日期的间隔。除自动计算外，也可以明确指定范围和间隔，或者对数据计算方式进行设置，这时自动计算结果可以被覆盖。
   
• 图例：
  为图例提供广泛的可定制性。图例的位置和它所表示的内容均可以完全定制。还可以对采用事件的图例项目进行修改。另外，还支持不受数据序列约束的定制图例项。
   
• 图表类型：支持15种图表类型，可以根据您的需要进行设置。支持连续级和单独点的图表定制。Essential Chart也提供对定制图标的支持；
  Essential Chart is a business oriented charting component. It offers an innovative data object model that makes it easy to populate the chart with any kind of data source. Essential Chart features an advanced styles architecture that makes complex multi-level formatting very easy. The enterprise edition (includes Essential Grouping) adds support for grouping.

  Feature:

  Chart Data
  
  The data model of Essential Chart is separate from its display elements. This provides a flexible data model that makes application development easier. The basic data model of the chart is not tied to the Microsoft data binding interfaces. The core data model defines data services that pertain only to the chart. This makes it very easy to implement models that work with any data source.
  
  Chart Appearances
  
  Essential Chart's appearance can be controlled through the various elements of the chart display area exposed by the control through its properties. Essential Chart features a rich styles architecture that allows for point level formatting as well as series level formatting with the ability to control the manner in which individual settings are inherited. The styles architecture also provides an optimized data store that stores data only as needed.
  
  Date Handling
  
  Essential Chart features built in support for dates. The data type of any series that is plotted on the chart can be set to DateTime.
  
  Automatic Range
  
  Essential Chart offers automatic interval calculation capabilities for any range of numbers or dates. This calculation can be overridden by explicit allocation of ranges and intervals to be used and also with settings that control how 'nice' numbers are calculated for displayLegend
  
  Essential Chart offers extensive customization possibilities of the legend. The position of the legend on the chart area as well as its representation aspects can all be completely customized. Essential Chart also features modification of legend items using events. It also supports custom legend items that are not tied to series of data.
  
  Chart Types
  
  Essential Chart offers more than 15 chart types which can be easily configured to suit a user's needs. Essential Chart supports customization of charts both at the series level and at the individual point level. Essential Chart also provides support for custom charts.
   

  可用模式：Client Server (CS)模式
  控件类型：.NET
  可用平台：.NET 2003/2005
  产品功能：图表