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Diagramming for Silverlight v3.0.1：

Zoom control
The ZoomControl class lets users change interactively the current zoom level and scroll position of a Diagram. To set it up, add a ZoomControl to the page, place it anywhere over the target diagram, and set the control's Target property to that diagram. Set the ZoomStep and ScrollStep properties to specify the amount added to view's zoom level or scroll position by ZoomControl's buttons. You can customize the control's appearance by setting properties such as Fill, Stroke, CornerRadius and TickPosition.
Miscellaneous
~ Enable the AllowRenamePages property of TabbedDiagramView to let users rename a DiagramPage interactively by clicking its tab.
~ Several new stock shapes added: RightTriangle, Decagon, Trapezoid, Star4Pointed, Star5Pointed, Star6Pointed, Star7Pointed, Star16Pointed, Star24Pointed, Star32Pointed, Donut, Plaque.
~ New RoundAndSquare and RoundAndSquare2 handle styles can be set as the HandlesStyle of nodes.
~ The projection of a node on the scales of Ruler control now shows the boundaries of the rotated node shape. To ignore rotation as in older versions, set ProjectRotatedBounds to false.
~ The ScrollZoneSize property specifies the size of the region near viewport borders that triggers auto-scrolling.
~ Set the HandlesStyle property of nodes to Custom to implement custom appearance and hit-testing for adjustment handles. The control raises DrawAdjustmentHandles and HitTestAdjustmentHandles events  for such nodes.
 ~ The SetSelfLoopShape event is raised when a link becomes a self-loop, giving you a chance to set a custom shape for the link.

Diagramming for Silverlight v3.0.1 更新内容如下：

缩放控制

• ZoomControl（缩放控制）类让用户交互式改变Diagram当前缩放比例和滚动位置。添加一个ZoomControl到页面，把它放在目标图表上的任意位置，设置控制的目标属性到该图表。设置ZoomStep和ScrollStep属性来指定添加到视图缩放比例或滚动位置（诸如Fill、CornerRadius 和 TickPosition等等的属性）。

其它：

• 启用TabbedDiagramView 的 AllowRenamePages属性让用户通过点击tab 来对 DiagramPage 进行交互式重命名。
• 添加几个新的形状：直角三角形、十边形、梯形、环形等等。
• 新的 RoundAndSquare 和 RoundAndSquare2 处理样式可以被设置为HandlesStyle节点。
• ScrollZoneSize（滚动区域大小）属性指定了视口边界附近触发自动滚动的区域。
• 设置节点的HandlesStyle（处理样式）属性为Custom（自定义），来执行自定义外观。控制为这些节点引发DrawAdjustmentHandles 和 HitTestAdjustmentHandles 事件。
• 当一个链接编程一个自循环，引发 SetSelfLoopShape 事件，由此你有机会为链接设置自定义形状。