Returns whether or not the
UltraTreeNode is in view.
The following sample code illustrates some of the information exposed by a mode.
Imports Infragistics.Win.UltraWinTree
Private Sub button19_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button19.Click
Dim node As UltraTreeNode
' Get the top node. This is the first node that
' is currently scrooled to the top of the tree.
node = Me.ultraTree1.TopNode
' Loop over all visible nodes (this bypasses nodes
' whose 'Visible' property is false as well as
' nodes with a collpased parent node)
While Not node Is Nothing
' Write node's key.
Debug.WriteLine("node key: " + node.Key)
' Indent the rest of the output.
Debug.Indent()
' Write out the node handle's value. The handle is
' just an integer that uniquely identifies a node
' during a session, even across different tree
' controls. However, be aware that this handle is
' only valid during the session and is therefore
' not persistable.
Debug.WriteLine("handle: " + node.Handle.ToString())
' Write out some additonal information about the node
Debug.WriteLine("text: " + node.Text)
Debug.WriteLine("level: " + node.Level.ToString())
Debug.WriteLine("index: " + node.Index.ToString())
Debug.WriteLine("visible: " + node.Visible.ToString())
Debug.WriteLine("expanded: " + node.Expanded.ToString())
Debug.WriteLine("check state: " + node.CheckedState.ToString())
Debug.WriteLine("full path: " + node.FullPath.ToString())
Debug.WriteLine("style: " + node.NodeStyleResolved.ToString())
Debug.WriteLine("tip style: " + node.TipStyleNodeResolved.ToString())
Debug.WriteLine("ShowExpansionIndicator: " + node.ShowExpansionIndicatorResolved.ToString())
Debug.WriteLine("AllowAutoDragExpand: " + node.AllowAutoDragExpandResolved.ToString())
If node.AllowDeleteResolved = True Then
Debug.WriteLine("allow the deletion of this node.")
End If
If node.DrawImageBackgroundResolved = DefaultableBoolean.True Then
Debug.WriteLine("will draw a backround image if one is set.")
End If
If node.HasExpansionIndicator = True Then
Debug.WriteLine("has an expansion indicator.")
End If
If node.HotTrackingResolved = True Then
Debug.WriteLine("supports hot tracking.")
End If
If node.LabelEditResolved = True Then
Debug.WriteLine("allow user editing of this node's text.")
End If
If node.EnabledResolved = True Then
Debug.WriteLine("is enabled.")
Else
Debug.WriteLine("is disabled.")
End If
If node.IsInView = True Then
Debug.WriteLine("is in view.")
Else
Debug.WriteLine("is not in view.")
End If
If node.IsActive = True Then
Debug.WriteLine("is active.")
End If
If node.IsDraggable = True Then
Debug.WriteLine("is draggable.")
End If
If node.IsEditing = True Then
Debug.WriteLine("is in edit.")
End If
If node.IsHotTracking = True Then
Debug.WriteLine("is hot tracking.")
End If
If node.IsRootLevelNode = True Then
Debug.WriteLine("is root node.")
Else
Debug.WriteLine("root node: " + node.RootNode.Key)
If Not node.PrevVisibleNode Is Nothing Then
Debug.WriteLine("previous visible node: " + node.PrevVisibleNode.Key)
End If
End If
If node.IsSelectable = True Then
Debug.WriteLine("is selectable.")
End If
If node.ReserveCheckBoxSpaceResolved = True Then
Debug.WriteLine("reserve space for a checkbox even if the NodeStyle is not a checkbox or option style.")
End If
If node.ReserveImageSpaceResolved = True Then
Debug.WriteLine("reserve space for an image even if there isn't one.")
End If
Debug.WriteLine("double click action: " _
+ node.NodeDoubleClickActionResolved.ToString())
Debug.WriteLine("width of the text: " _
+ node.TextWidth.ToString() _
+ " pixels.")
Debug.WriteLine("height of the node: " _
+ node.ItemHeightResolved.ToString() _
+ " pixels.")
Debug.WriteLine("bounds: " _
+ node.Bounds.ToString())
Debug.WriteLine("image size: " _
+ node.ImageSizeResolved.ToString())
Debug.WriteLine("# of sibling nodes: " _
+ node.ParentNodesCollection.Count.ToString())
' Reset the output indent level
Debug.IndentLevel = 0
' get the next visible node
node = node.NextVisibleNode
End While
End Sub
'Declaration
Public ReadOnly Property IsInView As Boolean
using System.Diagnostics;
using Infragistics.Win.UltraWinTree;
private void button19_Click(object sender, System.EventArgs e)
{
UltraTreeNode node;
// Get the top node. This is the first node that
// is currently scrooled to the top of the tree.
node = this.ultraTree1.TopNode;
// Loop over all visible nodes (this bypasses nodes
// whose 'Visible' property is false as well as
// nodes with a collpased parent node)
while (node != null)
{
// Write node's key.
Debug.WriteLine( "node key: " + node.Key );
// Indent the rest of the output.
Debug.Indent();
// Write out the node handle's value. The handle is
// just an integer that uniquely identifies a node
// during a session, even across different tree
// controls. However, be aware that this handle is
// only valid during the session and is therefore
// not persistable.
Debug.WriteLine("handle: " + node.Handle.ToString());
// Write out some additonal information about the node
Debug.WriteLine( "text: " + node.Text );
Debug.WriteLine("level: " + node.Level.ToString());
Debug.WriteLine("index: " + node.Index.ToString());
Debug.WriteLine("visible: " + node.Visible.ToString());
Debug.WriteLine("expanded: " + node.Expanded.ToString());
Debug.WriteLine("check state: " + node.CheckedState.ToString());
Debug.WriteLine("full path: " + node.FullPath.ToString());
Debug.WriteLine("style: "
+ node.NodeStyleResolved.ToString() );
Debug.WriteLine("tip style: "
+ node.TipStyleNodeResolved.ToString() );
Debug.WriteLine("ShowExpansionIndicator: "
+ node.ShowExpansionIndicatorResolved.ToString() );
Debug.WriteLine("AllowAutoDragExpand: "
+ node.AllowAutoDragExpandResolved.ToString() );
if ( node.AllowDeleteResolved )
Debug.WriteLine("allow the deletion of this node.");
if ( node.DrawImageBackgroundResolved
== DefaultableBoolean.True )
Debug.WriteLine("will draw a backround image if one is set.");
if ( node.HasExpansionIndicator )
Debug.WriteLine("has an expansion indicator.");
if ( node.HotTrackingResolved )
Debug.WriteLine("supports hot tracking.");
if ( node.LabelEditResolved )
Debug.WriteLine("allow user editing of this node's text.");
if ( node.EnabledResolved )
Debug.WriteLine("is enabled.");
else
Debug.WriteLine("is disabled.");
if ( node.IsInView )
Debug.WriteLine("is in view.");
else
Debug.WriteLine("is not in view.");
if ( node.IsActive )
Debug.WriteLine("is active.");
if ( node.IsDraggable )
Debug.WriteLine("is draggable.");
if ( node.IsEditing )
Debug.WriteLine("is in edit.");
if ( node.IsHotTracking )
Debug.WriteLine("is hot tracking.");
if ( node.IsRootLevelNode )
Debug.WriteLine("is root node.");
else
Debug.WriteLine("root node: "
+ node.RootNode.Key );
if ( node.PrevVisibleNode != null )
Debug.WriteLine("previous visible node: "
+ node.PrevVisibleNode.Key );
if ( node.IsSelectable )
Debug.WriteLine("is selectable.");
if ( node.ReserveCheckBoxSpaceResolved )
Debug.WriteLine("reserve space for a checkbox even if the NodeStyle is not a checkbox or option style.");
if ( node.ReserveImageSpaceResolved )
Debug.WriteLine("reserve space for an image even if there isn't one.");
Debug.WriteLine("double click action: "
+ node.NodeDoubleClickActionResolved.ToString() );
Debug.WriteLine("width of the text: "
+ node.TextWidth.ToString()
+ " pixels." );
Debug.WriteLine("height of the node: "
+ node.ItemHeightResolved.ToString()
+ " pixels." );
Debug.WriteLine("bounds: "
+ node.Bounds.ToString() );
Debug.WriteLine("image size: "
+ node.ImageSizeResolved.ToString() );
Debug.WriteLine("# of sibling nodes: "
+ node.ParentNodesCollection.Count.ToString() );
// Reset the output indent level
Debug.IndentLevel = 0;
// get the next visible node
node = node.NextVisibleNode;
}
}
'Declaration
Public ReadOnly Property IsInView As Boolean
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
