Infragistics2.Win.UltraWinTree.v8.1
AllowAutoDragScrolling Property
See Also  Example
Infragistics.Win.UltraWinTree Namespace > UltraTree Class : AllowAutoDragScrolling Property

Gets/sets a value which determines whether the control will automatically scroll when a drag is in progress.

Syntax

Visual Basic (Declaration) 
Public Property AllowAutoDragScrolling As Boolean
C# 
public bool AllowAutoDragScrolling {get; set;}

Example

The following sample code initializes various properties on an UltraWinTree control and illustrates how to populate the tree.



Visual BasicCopy Code
    Imports Infragistics.Win.UltraWinTree

    Private Sub InitializeTreeControl()

        With Me.ultraTree1
            ' Set various properties on the tree control

            ' Specify whether the tree will scroll during a
            ' drag operation
            .AllowAutoDragScrolling = True

            ' Specify whether the tree will look for the
            ' next matching node as the user types.
            .AllowKeyboardSearch = True

            ' Specify the amount of milliseconds to wait
            ' before expanding a node during a drag
            ' operation.
            .AutoDragExpandDelay = 500

            ' Set the border style of the control
            .BorderStyle = Infragistics.Win.UIElementBorderStyle.InsetSoft

            ' Specify whether clicking anywhere on the
            ' row the node is on will select the node.
            .FullRowSelect = False

            ' Specify whether selected nodes remain
            ' highlighted when the tree loses focus.
            .HideSelection = True

            ' Specify the padding around images in pixels.
            .ImagePadding = 3

            ' Specify how many pixels to indent each
            ' node level.
            .Indent = 8

            ' Specify the default size of images that will
            ' appear to the left and right of a node's text.
            .LeftImagesSize = New Size(12, 12)
            .RightImagesSize = New Size(8, 8)

            ' Specify the style and color os the node
            ' connector lines.
            .NodeConnectorColor = Color.Red
            .NodeConnectorStyle = NodeConnectorStyle.Dotted

            ' Specify the string to be used to separate
            ' ancestor nodes when getting a node's
            ' 'FullPath' property. For example:
            'Me.ultraTree1..ActiveNode.FullPath
            .PathSeparator = "\"

            ' Specify whether scrollbars will be shown
            .Scrollable = Scrollbar.ShowIfNeeded

            ' Specify whether lines will appear between nodes
            .ShowLines = True

            ' Specify whether room for lines and expansion
            ' indicators will be reserved to the left of root
            ' nodes (i.e. nodes without a parent node).
            '
            ' Note: If the 'ShowLines' property is set to
            ' false then the root lines won't be visible
            ' even if the 'ShowRootLines' property is true.
            ' In that case just the expansion indicators
            ' will show.
            .ShowRootLines = True

            ' Add a root node
            Dim node As UltraTreeNode
            Dim childNode As UltraTreeNode

            node = .Nodes.Add("Node 1")

            ' Add some child nodes
            childNode = node.Nodes.Add("child node 1")
            childNode.Nodes.Add("child child 1")
            childNode.Nodes.Add("child child 2")
            childNode.Nodes.Add("child child 3")

            ' Add some grandchild nodes
            childNode = node.Nodes.Add("child node 2")
            childNode = node.Nodes.Add("child node 3")
            ' Disable the node
            childNode.Enabled = False
            childNode = node.Nodes.Add("child node 4")

            ' Add another root node
            node = .Nodes.Add("Node 2")

            ' Activate the last child node added
            .ActiveNode = childNode

            ' Bring the active node into view
            .ActiveNode.BringIntoView()

        End With

    End Sub
C#Copy Code
       using Infragistics.Win.UltraWinTree;

       private void InitializeTreeControl()
       {

           // Set various properties on the tree control

           // Specify whether the tree will scroll during a
           // drag operation
           this.ultraTree1.AllowAutoDragScrolling = true;
           
           // Specify whether the tree will look for the
           // next matching node as the user types.
           this.ultraTree1.AllowKeyboardSearch = true;

           // Specify the amount of milliseconds to wait
           // before expanding a node during a drag
           // operation.
           this.ultraTree1.AutoDragExpandDelay = 500;

           // Set the border style of the control
           this.ultraTree1.BorderStyle = Infragistics.Win.UIElementBorderStyle.InsetSoft;

           // Specify whether clicking anywhere on the
           // row the node is on will select the node.
           this.ultraTree1.FullRowSelect = false;

           // Specify whether selected nodes remain
           // highlighted when the tree loses focus.
           this.ultraTree1.HideSelection = true;

           // Specify the padding around images in pixels.
           this.ultraTree1.ImagePadding = 3;

           // Specify how many pixels to indent each
           // node level.
           this.ultraTree1.Indent = 8;

           // Specify the default size of images that will
           // appear to the left and right of a node's text.
           this.ultraTree1.LeftImagesSize = new Size(12,12);
           this.ultraTree1.RightImagesSize = new Size(8,8);

           // Specify the style and color os the node
           // connector lines.
           this.ultraTree1.NodeConnectorColor = Color.Red;
           this.ultraTree1.NodeConnectorStyle = NodeConnectorStyle.Dotted;

           // Specify the string to be used to separate
           // ancestor nodes when getting a node's
           // 'FullPath' property. For example:
           //this.ultraTree1.ActiveNode.FullPath;
           this.ultraTree1.PathSeparator = @"\";

           // Specify whether scrollbars will be shown
           this.ultraTree1.Scrollable = Scrollbar.ShowIfNeeded;

           // Specify whether lines will appear between nodes
           this.ultraTree1.ShowLines = true;

           // Specify whether room for lines and expansion
           // indicators will be reserved to the left of root
           // nodes (i.e. nodes without a parent node).
           //
           // Note: If the 'ShowLines' property is set to
           // false then the root lines won't be visible
           // even if the 'ShowRootLines' property is true.
           // In that case just the expansion indicators
           // will show.
           this.ultraTree1.ShowRootLines = true;

           // Add a root node
           UltraTreeNode node = this.ultraTree1.Nodes.Add("Node 1");

           // Add some child nodes
           UltraTreeNode childNode = node.Nodes.Add("child node 1");
           childNode.Nodes.Add("child child 1");
           childNode.Nodes.Add("child child 2");
           childNode.Nodes.Add("child child 3");

           // Add some grandchild nodes
           childNode = node.Nodes.Add("child node 2");
           childNode = node.Nodes.Add("child node 3");
           // Disable the node
           childNode.Enabled = false;
           childNode = node.Nodes.Add("child node 4");
           
           // Add another root node
           node = this.ultraTree1.Nodes.Add("Node 2");

           // Activate the last child node added
           this.ultraTree1.ActiveNode = childNode;

           // Bring the active node into view
           this.ultraTree1.ActiveNode.BringIntoView();

       }

See Also