彩票走势图

• 可显示数据等级关系——不管是在绑定还是未绑定模式下，用户都可通过XtraTreeList显示任意自定义的数据结构，以免产生混淆。





• 对ADO.NET的完全支持——XtraTreeList充分利用了ADO.NET。由于使用这种新的数据存取结构，并且从数据显示中分离内部数据模块，XtraTreeList不需要使用任何外部存储器，因此大大提高了性能，减少了内存的使用。我们并没有夸大该特性的重要性，用户如果将XtraTreeList使用的内存量和其他类似的控件相比较，就能看出其具有非常大的优势，简直有天壤之别。




•    




• 支持高级未绑定模式——XtraTreeList可与任何支持IList、ITypedList接口以及它们继承接口的源码一起使用。




•    




• 支持高级时间设置——用户可使用XtraTreeList组件编辑器，快速、简便地进行时间设置。




•    




• 对XP主题的内建支持——XtraTreeList完全支持XP主题。




•    




• 灵活的显示方式——无论用户想以树形还是网格的方式显示信息，XtraTreeList都能提供所需工具。




•    




• 可对无限数量的TreeList列自动排序——通过使用XtraTreeList，用户可对无限列进行排序，且不需要编写任何代码！




•    




• 可自定义列的运行——当然，用户也许从来没有想过一个树形控件具有这种功能，但是因为XtraTreeList是一个Tree/List的混和体，终端用户就可在屏幕上通过直观的拖放选项来自定义列。而且最好的是，用户不需编要写任何代码来启动这项功能。




•    




• 可自动调整运行列的尺寸——通过XtraTreeList用户可方便的调整节点（行）的高度来满足所需。




•    




• 支持自动运行列的拖放——通过XtraTreeList，终端用户可按所需添加、删除列，通过简单的拖放来控制TreeList的外观。




•    




• 标准操作和扩展操作的多项选择功能——不像其他同类树形竞争产品，XtraTreeList可为用户提供标准节点选择和多节点选择的功能。




•    




• 集成的XtraEditors库——当用户在树形视图中使用编辑器的时候，将不再会产生混淆或者受限。XtraTreeList通过使用XtraEditors库，可允许用户在自己的TreeList中直接使用我们领域的所有编辑器（从数据控件到复选框）。




•    




• 可存储编辑器——用户可设置一个单独的本地编辑器，例如可为支付类字段 设置一个抓图工具作为编辑器，然后用户就可在很多所需的TreeList字段内重新使用它。若用户使用存储编辑器，当必须增加一个不同的信用卡支付类时，仅仅需要更改一个本地的编辑器。




•    




• 自动预览面板——和MS Outlook Grid类似，它可在TreeList中给用户显示长文本字符串。




•    




• 自动调整宽度——在TreeList控件中可自动调整所有显示的列，以去掉横向滚动条。




•    




• 显示方式——该功能可使用户控制TreeList的外观和感观。




•    




• 支持高级AlphaBlending——XtraTreeList通过其内建的alphablending支持功能，给予用户非常好的数据显示灵活性。用户可毫不费力地使其TreeList具有最好的外观和感观以满足商务需求。




•    




• 可保存和载入显示布局——就如XtraGrid那样，XtraTreeList可给予了用户从记录、XML文件、流文件中保存或还原其布局的能力。




•    




• 数据汇总——XtraTreeList不仅仅用于信息的显示，用户还可通过集成的数据汇总支持，执行聚合函数来减少树节点，或者通过简单的属性设置来产生脚注。




•    




• Tree Line样式——通过XtraTreeList的自定义绘画功能，用户可通过LineStyle属性设置来自定义tree lines的外观。




•    




• ITreeListPaintHelper接口——这个高级绘图机制可使用户方便地使用任何绘图惯例，而不需要使用CustomDraw。




•    




• 节点状态和图像选择




•    




• 上下文菜单——通过XtraTreeList内建的上下文菜单，用户可减少编写的代码量，而将更多的能力展现给其终端用户。




•    




• 内建的打印支持——XtraTreeList支持XtraPrinting库（一种单独的产品），因此，用户可在不需要编写代码的情况下，方便地将TreeList的内容打印到出版物上。




•    




• TreeNode Iterator——为了简化节点的移动，XtraTreeList采用了简单易用的节点迭代类来传输。




•    




• 自动生成关键字段和父字段——用户可非常方便地通过XtraTreeList自动列生成器，生成关键字段、父字段和图片索引字段，以便创建树形结构。




•    




• 完全的自定义绘图支持

Flexibility is the keyword behind all Developer Express .NET components. The XtraTreeList lives up to this commitment by giving you a variety of ways in which to display information to your end users using a Tree/Grid display metaphor. Unlike competing products that box you into a corner, the XtraTreeList gives you the wherewithall to deliver INTUITIVE applications and RADICALLY reduce the amount of source code you have to write.

• Represent Hierarchical Data Relationships - With the XtraTreeList, you can represent any self-referenced data structure without hassles... In bound or un-bound mode.


• 　


• Full ADO.NET Support - The XtraTreeList takes full advantage of ADO.NET. By using this new data access architecture and by separating internal data modules from data presentation, the XtraTreeList does not use any extra buffers, thus greatly improving performance and reducing memory use. The importance of this feature cannot be overstated...compare the memory footprint of the XtraTreeList to other similar controls and you will see its advantages like night and day.


• 　


• Advanced Unbound Mode Support - The XtraTreeList works with any source which supports an IList or ITypedList interface, along with all inherited interfaces.


• 　


• Advanced Design-Time Support - You can use the XtraTreeList component editor for fast and easy design time setup.


• 　


• Built in XP Theme Support - The XtraTreeList fully supports XP Themes.


• 　


• Flexible Display Formats - Whether you wish to display information to users in the form of a tree or a grid, the XtraTreeList gives you all the tools necessary to carry out the task.


• 　


• Automatic Sorting Against an Unlimited Number of TreeList Columns - With the XtraTreeList, you can sort against an unlimited number of columns, all without writing a single line of code!


• 　


• Runtime Column Customization - Yes, you would never think that a tree control would have this capability, but because the XtraTreeList is a hybrid Tree/List, your end-users can customize the columns on-screen using intuitive drag and drop operations...And best of all, you dont have to write any code to enable this capability!


• 　


• Automatic Runtime Column Resizing - With the XtraTreeList, your users can easily adjust the height of nodes (rows) to meet their specific needs.


• 　


• Automatic Runtime Column Drag & Drop Support - With the XtraTreeList, your end-users can control the appearance of the TreeList as they wish by adding and removing columns using simple drag and drop.


• 　


• Standard and Extended Multi-Select Operations - Unlike competing Tree products, the XtraTreeList gives you both standard node select and multi-node select capabilities.


• 　


• XtraEditors Library Integration - No more hassles or limits when it comes to using editors within a treeview. XtraTreeList works in concert with our XtraEditors Library allowing you to use all our field editors (from date controls to combo boxes) directly within your TreeList.


• 　


• Editor Repository - You can setup a single in-place editor, for instance a pick image edit as an editor for a payment type field, and then reuse it for as many TreeLists fields as you wish. When you use the repository and you have to add a different credit card payment type, you need only change one in-place editor.


• 　


• Auto Preview Pane - Similar to the MS Outlook® Grid, allows you to display long text strings to users within the TreeList itself.


• 　


• Auto Width - Automatically fit all displayed columns within the TreeList control to eliminate the horizontal scroll bar.


• 　


• View Styles - Styles allow you to control the look and feel of the TreeList.


• 　


• Advanced AlphaBlending Support - The XtraTreeList gives you incredible data presentation flexibility via its built-in alphablending support. You can give your TreeList the look and feel that best meets your business requirements with ease and simplicity.


• 　


• Save and Load View Layouts - Like the XtraGrid, the XtraTreeList gives you the ability to save and restore its layout from the Registry, XML file, or from a stream.


• 　


• Data Summaries - The XtraTreeList is not just about the display of information...Via our integrated data summary support, you can perform aggregate functions against tree nodes or as a footer with simple property settings.


• 　


• Tree Line Styles - In concert with the custom draw capabilities of the XtraTreeList, you can customize the appearance of tree lines via our LineStyle property.


• 　


• ITreeListPaintHelper Interface - This advanced painting mechanism allows you to easily implement any drawing routine without the need to use CustomDraw.


• 　


• Node State and Select Images


• 　


• Context Menus - With the XtraTreeList's built-in context menus, you can reduce the amount of code you write AND deliver more capabilities to your end users.


• 　


• Built-in Printing Support - The XtraTreeList supports the XtraPrinting Library (a separate product) so you can easily output the contents of your TreeList to the printed page, without writing any code.


• 　


• TreeNode Iterator - To simplify node traversal, the XtraTreeList ships with an easy to use node iterator class.


• 　


• Auto Key Field and Parent Field Generation - The XtraTreeList can easily assist you in building tree structures via its auto-generated columns for fields used as KeyField, ParentField and ImageIndex field.


• 　


• Full Custom Draw Support