Gets/sets a value which determines if a user can delete the node using the 'Delete' key.
The following sample code shows how to allow deletion of nodes.
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinTree
Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.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 default to allow deletion of all nodes if the
' user selects a node and presses the 'Delete' key
Me.ultraTree1.Override.AllowDelete = DefaultableBoolean.True
' Set the default for nodes that are at level 2
' (i.e. grandchild nodes of root modes) so that
' they can't be deleted.
' This overrides the default setting above.
Me.ultraTree1.NodeLevelOverrides(2).AllowDelete = DefaultableBoolean.False
' Set the default for nodes at the root level
' so that they can't be deleted.
' This overrides the default settings above.
Me.ultraTree1.Nodes.Override.AllowDelete = DefaultableBoolean.False
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 deletion of that specific node only.
' This overrides any default settings above.
node.Override.AllowDelete = DefaultableBoolean.False
' However, do allow deletion of that node's child nodes
node.Nodes.Override.AllowDelete = DefaultableBoolean.True
End Sub
'Declaration
Public Property AllowDelete As Infragistics.Win.DefaultableBoolean
using Infragistics.Win;
using Infragistics.Win.UltraWinTree;
private void button1_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 default to allow deletion of all nodes if the
// user selects a node and presses the 'Delete' key
this.ultraTree1.Override.AllowDelete = DefaultableBoolean.True;
// Set the default for nodes that are at level 2
// (i.e. grandchild nodes of root modes) so that
// they can't be deleted.
// This overrides the default setting above.
this.ultraTree1.NodeLevelOverrides[2].AllowDelete = DefaultableBoolean.False;
// Set the default for nodes at the root level
// so that they can't be deleted.
// This overrides the default settings above.
this.ultraTree1.Nodes.Override.AllowDelete = DefaultableBoolean.False;
// 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 deletion of that specific node only.
// This overrides any default settings above.
node.Override.AllowDelete = DefaultableBoolean.False;
// However, do allow deletion of that node's child nodes
node.Nodes.Override.AllowDelete = DefaultableBoolean.True;
}
'Declaration
Public Property AllowDelete As Infragistics.Win.DefaultableBoolean
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
