Appendix A: Web Control Reference

MenuItemDataBound fired when a menu item is bound to its data source

TreeView

Properties

AutoGenerateDataBindings

a Boolean value specifying whether the TreeView should automatically generate tree node bindings; default is True

CheckedNodes

a collection of TreeNode objects representing the checked TreeView nodes

CollapseImageToolTip

the tooltip for the image displayed for the “collapse” node indicator

CollapseImageUrl

a string representing the URL for a custom image to be used as the “collapse” node indicator

EnableClientScript

a Boolean value that specifies whether or not the TreeView should generate client-side JavaScript that expands or collapses nodes; True by default

When the value is False, a server postback needs to be performed every time the user expands or collapses a node.

ExpandDepth

an integer representing the number of TreeView levels that are expanded when the control is displayed for the first time; default is -1, which displays all the nodes

ExpandImageToolTip

the tooltip for the image displayed for the “expand” node indicator

ExpandImageUrl

a string representing the URL for a custom image to be used as the “expand” node indicator

HoverNodeStyle

a TreeNodeStyle object used to define the styles of a node when the cursor is hovered over it

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TreeView

ImageSet

a TreeViewImageSet value representing the set of images to be used when displaying TreeView nodes; default values are Arrows, BulletedList, BulletedList2, BulletedList3, BulletedList4, Contacts, Custom, Events, Faq, Inbox, News, Simple, Simple2, Msdn, WindowsHelp, and XPFileExplorer

When not using one of these predefined sets, you should define these properties instead: CollapseImageUrl, ExpandImageUrl, LineImagesFolder, and NoExpandImageUrl

LeafNodeStyle

a TreeNodeStyle representing the style used to render leaf nodes

LevelStyles

a TreeNodeStyleCollection that contains the styles used to render the items in each TreeView level

LineImagesFolder

a string containing the path to a web-accessible folder that holds the image files used to connect child nodes to parent nodes; that folder must include these files: Dash.gif, Dashminus.gif, Dashplus.gif, I.gif, L.gif, Lminus.gif, Lplus.gif, Minus.gif, Noexpand.gif, Plus.gif, R.gif, Rminus.gif, Rplus.gif, T.gif, Tminus.gif, and Tplus.gif

MaxDataBindDepth

defines the maximum number of tree levels to bind to the TreeView control

NodeIndent

an integer representing the number of pixels by which child nodes in the tree will be indented

Nodes

a TreeNodeCollection containing the root nodes of the tree

NodeStyle

the TreeNodeStyle object that defines the default appearance of all tree nodes

NodeWrap

a Boolean value indicating whether the text in a node wraps

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Appendix A: Web Control Reference

NoExpandImageUrl

a string representing the URL for a custom image that indicates nodes that cannot be expanded

ParentNodeStyle

the TreeNodeStyle object that defines the appearance of parent nodes

PathSeparator

the character used to delimit node values in the ValuePath property

PopulateNodesFromClient

a Boolean value that specifies whether or not node data should be populated dynamically when necessary, without posting back to the server; default value is True

RootNodeStyle

a TreeNodeStyle object that defines the appearance of the root node

SelectedNode

a string containing the value of the selected node

SelectedNodeStyle

a TreeNodeStyle object that defines the appearance of the selected node

ShowCheckBoxes

a TreeNodeTypes value that defines which tree nodes should be associated with text boxes; possible values are All, Leaf, None, Parent, and Root

ShowExpandCollapse

a Boolean value that determines whether or not expansion node indicators should be displayed

ShowLines

a Boolean value that determines whether or not linking lines between parent nodes and child nodes should be displayed

SkipLinkText

a string that describes the link that allows screen reader users to skip the content of this element

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