How to change color for Treeview.SelectedNode

Question

By default the SelectedNode in Treeview should have backgound color SystemColors.Highlight and fore color SystemColors.HighlightText. What i want is the SelectedNode to be hightlighted in different fore color (instead of SystemColors.HighlightText) I've tried to add this code treeView.SelectedNode.ForeColor = Colors.Blue in event handler for AfterSelect BeforeSelect. However it did not work as expected. Haven't tried before to alter the Paint/DrawNode event. Has anyone had solution? Thx

Amit Choudhary · Answer

hi friend you can do it on Tree.DrawNode event . It occurs when a TreeView is drawn and the DrawMode property is set to a TreeViewDrawMode value other than Normal Try below code: using System; using System.Drawing; using System.Windows.Forms; public class TreeViewOwnerDraw : Form { private TreeView myTreeView; // Create a Font object for the node tags. Font tagFont = new Font( Helvetica  8 FontStyle.Bold); public TreeViewOwnerDraw() { // Create and initialize the TreeView control. myTreeView = new TreeView(); myTreeView.Dock = DockStyle.Fill; myTreeView.BackColor = Color.Tan; myTreeView.CheckBoxes = true ; // Add nodes to the TreeView control. TreeNode node; for ( int x = 1; x { // Add a root node to the TreeView control. node = myTreeView.Nodes.Add(String.Format( Task {0}  x)); for ( int y = 1; y { // Add a child node to the root node. node.Nodes.Add(String.Format( Subtask {0}  y)); } } myTreeView.ExpandAll(); // Add tags containing alert messages to a few nodes // and set the node background color to highlight them. myTreeView.Nodes[1].Nodes[0].Tag = urgent! ; myTreeView.Nodes[1].Nodes[0].BackColor = Color.Yellow; myTreeView.SelectedNode = myTreeView.Nodes[1].Nodes[0]; myTreeView.Nodes[2].Nodes[1].Tag = urgent! ; myTreeView.Nodes[2].Nodes[1].BackColor = Color.Yellow; // Configure the TreeView control for owner-draw and add // a handler for the DrawNode event. myTreeView.DrawMode = TreeViewDrawMode.OwnerDrawText; myTreeView.DrawNode += new DrawTreeNodeEventHandler(myTreeView_DrawNode); // Add a handler for the MouseDown event so that a node can be // selected by clicking the tag text as well as the node text. myTreeView.MouseDown += new MouseEventHandler(myTreeView_MouseDown); // Initialize the form and add the TreeView control to it. this .ClientSize = new Size(292 273); this .Controls.Add(myTreeView); } // Clean up any resources being used. protected override void Dispose( bool disposing) { if (disposing) { tagFont.Dispose(); } base .Dispose(disposing); } [STAThreadAttribute()] static void Main() { Application.Run( new TreeViewOwnerDraw()); } // Draws a node. private void myTreeView_DrawNode( object sender DrawTreeNodeEventArgs e) { // Draw the background and node text for a selected node. if ((e.State & TreeNodeStates.Selected) != 0) { // Draw the background of the selected node. The NodeBounds // method makes the highlight rectangle large enough to // include the text of a node tag if one is present. e.Graphics.FillRectangle(Brushes.Green NodeBounds(e.Node)); // Retrieve the node font. If the node font has not been set // use the TreeView font. Font nodeFont = e.Node.NodeFont; if (nodeFont == null ) nodeFont = ((TreeView)sender).Font; // Draw the node text. e.Graphics.DrawString(e.Node.Text nodeFont Brushes.White Rectangle.Inflate(e.Bounds 2 0)); } // Use the default background and node text. else { e.DrawDefault = true ; } // If a node tag is present draw its string representation // to the right of the label text. if (e.Node.Tag != null ) { e.Graphics.DrawString(e.Node.Tag.ToString() tagFont Brushes.Yellow e.Bounds.Right + 2 e.Bounds.Top); } // If the node has focus draw the focus rectangle large making // it large enough to include the text of the node tag if present. if ((e.State & TreeNodeStates.Focused) != 0) { using (Pen focusPen = new Pen(Color.Black)) { focusPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot; Rectangle focusBounds = NodeBounds(e.Node); focusBounds.Size = new Size(focusBounds.Width - 1 focusBounds.Height - 1); e.Graphics.DrawRectangle(focusPen focusBounds); } } } // Selects a node that is clicked on its label or tag text. private void myTreeView_MouseDown(object sender MouseEventArgs e) { TreeNode clickedNode = myTreeView.GetNodeAt(e.X e.Y); if (NodeBounds(clickedNode).Contains(e.X e.Y)) { myTreeView.SelectedNode = clickedNode; } } // Returns the bounds of the specified node including the region // occupied by the node label and any node tag displayed. private Rectangle NodeBounds(TreeNode node) { // Set the return value to the normal node bounds. Rectangle bounds = node.Bounds; if (node.Tag != null ) { // Retrieve a Graphics object from the TreeView handle // and use it to calculate the display width of the tag. Graphics g = myTreeView.CreateGraphics(); int tagWidth = ( int )g.MeasureString (node.Tag.ToString() tagFont).Width + 6; // Adjust the node bounds using the calculated value. bounds.Offset(tagWidth/2 0); bounds = Rectangle.Inflate(bounds tagWidth/2 0); g.Dispose(); } return bounds; } } Please mark as answer if it helps.