BinaryTreeViewComboBox

Ensure you set a coordinate relative to the screen.

Set this property with a valid Image object of your choice.
The Width and Height of the custom image cannot exceed 14 pixels. If it does, the default image will be used and this property will automatically be set to null.
Note: If you set this property to null, the internal default image will be displayed as the window close image for the drop-down window.

Refer to SelectionDisplayStyle enumeration and SeperationCharacter property for more details.

The default color is ControlText.

You can set a custom Size of your choice for the drop-down treeview window using this property.

The property returns the currently selected node.
Note that this property is set to a valid node instance - only when you use the TreeViewNative as your treeview control.

The property returns the currently selected node index. This node index is relative to the current node's parent node.
Note that this property is set to a valid node index value only when you use the TreeViewNative as your treeview control.

By default the separation character is a "," (comma).
When you select a node in the drop-down treeview window, the selected text that is displayed in the combobox text portion depends on what style you have set in the DisplayThisFromTreeView property.
If you have chosen the DisplayFromTreeView.SelectedNode style, then the text of the selected node in the drop-down treeview will be displayed in the combobox.
If you have selected the DisplayFromTreeView.SelectedNodeAndAllChildNodes style, then the text of the selected node and all of its children element's text will be displayed.
When displaying the multiple text elements in the combobox, a separation character will be used to separate the various text elements from one-another. The default separation character is a comma (",").
You could change that to any other string, for example ":", by setting this property.

The default value is true.

Setup your Treeview control, and if it is a typical System.Windows.Forms.TreeView control, then... simply replace the reference to TreeView class with TreeViewNative class. and continue to setup your treeview as usual, and set the control's property TreeViewNative, and not this property. This way, you can use the internally defined / pre-written support for the ISuuportTreeView interface implementation. Only if you are not using TreeView control as the treeview object, then you will need to wrap that control into your custom class and implement ISupportTreeView interface, and pass it on to this property TreeViewInstance for display in TreeViewComboBox.
The following is a sample implementation of the interface ISupportTreeView interface. public class CustomTreeView : TreeView, BinarymissionTreeViewInterface.ISupportTreeView { BinarymissionTreeViewInterface.TreeNode treeNodeProxy = null; public CustomTreeView() : base() { treeNodeProxy = new Binarymission.WinFormControls.ListControls.InterfacesAndExtensionHelpers.TreeNode(); base.AfterSelect += new TreeViewEventHandler(CustomTreeView_AfterSelect); } void CustomTreeView_AfterSelect(object sender, TreeViewEventArgs e) { if (treeNodeProxy == null) return; treeNodeProxy.Text = e.Node.Text; treeNodeProxy.ParentTextItemsList = PrepareListFromNodes(e.Node, true); treeNodeProxy.ChildNodesItemsList = PrepareListFromNodes(e.Node, false); if (AfterSelect != null) { BinarymissionTreeViewInterface.TreeViewEventArgs te = new Binarymission.WinFormControls.ListControls.InterfacesAndExtensionHelpers.TreeViewEventArgs(); te.SelectedTreeNode = treeNodeProxy; AfterSelect(this, te); } } private List<string> PrepareListFromNodes(TreeNode node, bool parent) { List<string> textList = new List<string>(); if (parent) { TreeNode n = node.Parent; while (n != null) { textList.Add(n.Text); n = n.Parent; } } else { foreach (TreeNode n in node.Nodes) { textList.Add(n.Text); } } return textList; } public event BinarymissionTreeViewInterface.TreeViewEventHandler AfterSelect; }

If your treeview control is TreeView, then set this property, and NOT TreeViewInstance property. Prepare you treeview instance as usual, and set this property. Note that instaed of using TreeView use the TreeViewNative.
Setup your Treeview control. This is just a simple construction. You could however build it any other manner as you would, like directly from data sources etc.
Note that if you are only the System.Windows.Forms.TreeView and want to pass on this to control to BinaryTreeViewComboBox display, then simply replace the TreeView with Binarymission.WinFormControls.ListControls.BinaryTreeViewComboBox.TreeViewNative and continue to use your treeview as usual. This way, you can use the internally defined / pre-written support for the ISuuportTreeView interface implementation.
Only if you are not using System.Windows.Forms.TreeView control as the treeview object, then you will need to wrap that control inot your custom class and implement ISupportTreeView interface. For implementing this interface, please refer to the help guide which comes with a sample class implementing this interface, and you can clone that in to your implementation.
A code example is provided below (in C# .NET):
Binarymission.WinFormControls.ListControls.BinaryTreeViewComboBox.TreeViewNative customTreeView = new Binarymission.WinFormControls.ListControls.BinaryTreeViewComboBox.TreeViewNative(); customTreeView.ImageIndex = -1; customTreeView.Name = "customTreeViewInstance"; customTreeView.SelectedImageIndex = -1; customTreeView.Size = new System.Drawing.Size(250, 350); customTreeView.TabIndex = 0; customTreeView.HideSelection = false; customTreeView.BorderStyle = BorderStyle.FixedSingle; customTreeView.ImageList = this.imageList1; TreeNode root = new TreeNode("Corporate"); root.ImageIndex = 0; root.SelectedImageIndex = 0; customTreeView.Nodes.AddRange(new System.Windows.Forms.TreeNode[]{root}); // Now add the child nodes to the root TreeNode projectnode = new TreeNode("Projects"); projectnode.ImageIndex = 1; projectnode.SelectedImageIndex = 1; root.Nodes.Add(projectnode); TreeNode NETNode = new TreeNode("On .NET"); NETNode.ImageIndex = 2; NETNode.SelectedImageIndex = 2; projectnode.Nodes.Add(NETNode); TreeNode temp1 = new TreeNode("Delivered (19)"); temp1.ImageIndex = 3; temp1.SelectedImageIndex = 3; NETNode.Nodes.Add(temp1); TreeNode temp2 = new TreeNode("Work-in-Progress (23)"); temp2.ImageIndex = 4; temp2.SelectedImageIndex = 4; NETNode.Nodes.Add(temp2); TreeNode temp3 = new TreeNode("System Study (8)"); temp3.ImageIndex = 1; temp3.SelectedImageIndex = 1; customTreeView.SelectedNode = temp3; NETNode.Nodes.Add(temp3); TreeNode temp4 = new TreeNode("Appraisals (7)"); temp4.ImageIndex = 2; temp4.SelectedImageIndex = 2; NETNode.Nodes.Add(temp4); TreeNode COMNode = new TreeNode("On COM+"); COMNode.ImageIndex = 3; COMNode.SelectedImageIndex = 3; projectnode.Nodes.Add(COMNode); TreeNode temp5 = new TreeNode("Proposal Phase (7)"); temp5.ImageIndex = 4; temp5.SelectedImageIndex = 4; COMNode.Nodes.Add(temp5); TreeNode temp6 = new TreeNode("Site Visit/Analysis (3)"); temp6.ImageIndex = 1; temp6.SelectedImageIndex = 1; COMNode.Nodes.Add(temp6); TreeNode temp7 = new TreeNode("W-I-P (2)"); temp7.ImageIndex = 2; temp7.SelectedImageIndex = 2; COMNode.Nodes.Add(temp7); TreeNode temp8 = new TreeNode("Delivered (41)"); temp8.ImageIndex = 3; temp8.SelectedImageIndex = 3; COMNode.Nodes.Add(temp8); TreeNode ConsultNode = new TreeNode("On-line Consultancy"); ConsultNode.ImageIndex = 4; ConsultNode.SelectedImageIndex = 4; projectnode.Nodes.Add(ConsultNode); TreeNode Assets = new TreeNode("Assets"); Assets.ImageIndex = 1; Assets.SelectedImageIndex = 1; root.Nodes.Add(Assets); TreeNode People = new TreeNode("People"); People.ImageIndex = 2; People.SelectedImageIndex = 2; root.Nodes.Add(People); TreeNode Documents = new TreeNode("Documents (Templates)"); Documents.ImageIndex = 3; Documents.SelectedImageIndex = 3; root.Nodes.Add(Documents); TreeNode Papers = new TreeNode("White Papers"); Papers.ImageIndex = 4; Papers.SelectedImageIndex = 4; Documents.Nodes.Add(Papers); TreeNode Appraisals = new TreeNode("Appraisals"); Appraisals.ImageIndex = 5; Appraisals.SelectedImageIndex = 5; Documents.Nodes.Add(Appraisals); customTreeView.TabIndex = 0; customTreeView.Scrollable = true; customTreeView.ExpandAll(); // You could set the size of the drop-down window, if you need. //Size sz = new Size(350, customTreeView.Height); //this.binaryTreeViewComboBox1.DropDownWindowSize = sz; customTreeView.BorderStyle = BorderStyle.None; this.binaryTreeViewComboBox1.ShowBorderAlways = true; this.binaryTreeViewComboBox1.TreeViewNativeInstance = customTreeView;