Gets/sets a value which determines the delay, in milliseconds, of automatic node expansion on drag hover.
The following sample code shows how to specify whether nodes are automaticallt expanded asfter a short delay during a drag operation.
Imports Infragistics.Win.UltraWinTree
Private Sub button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button2.Click
' Note: the Override objects are exposed as properties off
' the tree, the node and the nodes collection as well as
' items in the NodeLevelOverrides collection. This allows
' default settings to be specified for the tree, a node,
' a node's children or for a level in the tree.
' set the number of milliseconds to delay before
' expanding a node during a drag operation
Me.ultraTree1.AutoDragExpandDelay = 300
' Set the default all nodes
Me.ultraTree1.Override.AllowAutoDragExpand = AllowAutoDragExpand.ExpandOnDragHoverWhenExpansionIndicatorVisible
' Set the default for nodes that are at level 2
' (i.e. grandchild nodes of root modes).
' This overrides the default setting above.
Me.ultraTree1.NodeLevelOverrides(2).AllowAutoDragExpand = AllowAutoDragExpand.ExpandOnDragHover
' Set the default for nodes at the root level.
' This overrides the default settings above.
Me.ultraTree1.Nodes.Override.AllowAutoDragExpand = AllowAutoDragExpand.Never
Dim node As UltraTreeNode
' Get a specific node by its key value.
' Note: this will return the node that has that key
' from anywhere in the tree structure since keys are
' unique across the entire tree.
node = Me.ultraTree1.GetNodeByKey("child node 1")
' Disallow auto expansion of that specific node only.
' This overrides any default settings above.
node.Override.AllowAutoDragExpand = AllowAutoDragExpand.Never
' However, do allow auto expansion of that node's child nodes
node.Nodes.Override.AllowAutoDragExpand = AllowAutoDragExpand.ExpandOnDragHover
End Sub
'Declaration
Public Property AutoDragExpandDelay As Integer
using Infragistics.Win.UltraWinTree;
private void button2_Click(object sender, System.EventArgs e)
{
// Note: the Override objects are exposed as properties off
// the tree, the node and the nodes collection as well as
// items in the NodeLevelOverrides collection. This allows
// default settings to be specified for the tree, a node,
// a node's children or for a level in the tree.
// set the number of milliseconds to delay before
// expanding a node during a drag operation
this.ultraTree1.AutoDragExpandDelay = 300;
// Set the default all nodes
this.ultraTree1.Override.AllowAutoDragExpand = AllowAutoDragExpand.ExpandOnDragHoverWhenExpansionIndicatorVisible;
// Set the default for nodes that are at level 2
// (i.e. grandchild nodes of root modes).
// This overrides the default setting above.
this.ultraTree1.NodeLevelOverrides[2].AllowAutoDragExpand = AllowAutoDragExpand.ExpandOnDragHover;
// Set the default for nodes at the root level.
// This overrides the default settings above.
this.ultraTree1.Nodes.Override.AllowAutoDragExpand = AllowAutoDragExpand.Never;
// Get a specific node by its key value.
// Note: this will return the node that has that key
// from anywhere in the tree structure since keys are
// unique across the entire tree.
UltraTreeNode node = this.ultraTree1.GetNodeByKey("child node 1");
// Disallow auto expansion of that specific node only.
// This overrides any default settings above.
node.Override.AllowAutoDragExpand = AllowAutoDragExpand.Never;
// However, do allow auto expansion of that node's child nodes
node.Nodes.Override.AllowAutoDragExpand = AllowAutoDragExpand.ExpandOnDragHover;
}
'Declaration
Public Property AutoDragExpandDelay As Integer
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
