![]() Occurs before the tree node is collapsed. Occurs before the tree node check box is checked. Occurs after the tree node check box is checked. The following are some of the commonly used events of the TreeView control − Sr.No. Returns a string containing the name of the control. Sorts all the items in the tree view control. The following are some of the commonly used methods of the TreeView control − Sr.No.Ĭollapses all the nodes including all child nodes in the tree view control. Gets the number of tree nodes that can be fully visible in the tree view control. Gets or sets the implementation of IComparer to perform a custom sort of the TreeView nodes. Gets or sets the first fully-visible tree node in the tree view control. Gets or sets the image list that is used to indicate the state of the TreeView and its nodes. Gets or sets a value indicating whether the tree nodes in the tree view are sorted. Gets or sets a value indicating whether lines are drawn between the tree nodes that are at the root of the tree view. Gets or sets a value indicating whether plus-sign (+) and minus-sign (-) buttons are displayed next to tree nodes that contain child tree nodes. Gets or sets a value indicating ToolTips are shown when the mouse pointer hovers over a TreeNode. Gets or sets a value indicating whether lines are drawn between tree nodes in the tree view control. Gets or sets the tree node that is currently selected in the tree view control. Gets or sets the key of the default image shown when a TreeNode is in a selected state. Gets or sets the image list index value of the image that is displayed when a tree node is selected. Gets or sets a value indicating whether the tree view control displays scroll bars when they are needed. Gets or sets a value that indicates whether the TreeView should be laid out from right-to-left. Gets or sets the delimiter string that the tree node path uses. Gets the collection of tree nodes that are assigned to the tree view control. Gets or sets the height of each tree node in the tree view control. The current foreground color for this control, which is the color the control uses to draw its text. Gets or sets the height of the font of the control. Gets or sets the font of the text displayed by the control. ![]() Gets or sets a value indicating whether check boxes are displayed next to the tree nodes in the tree view control. Gets or sets the border style of the tree view control. Gets or sets the layout of the background image for the TreeView control. Gets or set the background image for the TreeView control. ![]() Gets or sets the background color for the control. The following are some of the commonly used properties of the TreeView control − Sr.No. Let's click on a TreeView control from the Toolbox and place it on the form. Each node may contain one or more child nodes. ![]() #TREEVIEW WINFORMS DOWNLOAD#The control library and a sample WinForms application is available for download at GitHub.The TreeView control is used to display hierarchical representations of items similar to the ways the files and folders are displayed in the left pane of the Windows Explorer. Of course, these events need to be implemented for the other TreeView (tvRight) as well. Private void tvLeft_ScrollV(object sender, e) Let’s also synchronize the scroll position: private void tvLeft_ScrollH(object sender, e) Private void tvLeft_AfterExpand(object sender, TreeViewEventArgs e) If one TreeNode is collapsed or expanded, its corresponding TreeNode in the other TreeView should perform the same action: private void tvLeft_AfterCollapse(object sender, TreeViewEventArgs e) Var tnR = ("this is node " + i) Īpart from the ScrollH/V messages, we also want to synchronize the Collapse and Expand actions. ![]() We can use the Tag property to store the other TreeNode like this: var tnL = ("this is node " + i) Now we need to wire up the events and the scroll methods of two TreeView controls.įirst, each TreeNode object needs to know its corresponding TreeNode in the other TreeView for synchronization. In my previous post I sketched the mechanism to implement a TreeView class which raises scroll events and allows setting the scrollbar positions of a custom TreeView. ![]()
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