C# TreeView去除点击背景色问题

Question

我在重绘treeview仿微软点击击，选中时效果时，有个问题解决不了，就是在点击时，有个背景色默认蓝色，怎样去除?请参考下图:

Answer 1

DrawNode事件中对接点绘制底色为treeview的背景色

Answer 2

把源码附上，参考看哪里需要改动?
  public TreeViewW(IContainer container)
        {
            container.Add(this);            InitializeComponent();
            this.DrawMode = System.Windows.Forms.TreeViewDrawMode.OwnerDrawText;
            this.DrawNode += new DrawTreeNodeEventHandler(treeView1_DrawNode);
        }        private Color _rowBackColor1 = Color.White;//颜色1
        private Color _rowBackColor2 = Color.White;//颜色2
        private Color _selectedColor;        private Color _selectedColor1 = Color.Khaki;
        private Color _selectedColor2 = Color.Gold;
        private void treeView1_DrawNode(object sender, DrawTreeNodeEventArgs e)
        {
            TreeNode treeNode = e.Node;
            if (treeNode.IsSelected)
            {                RenderBackgroundInternal(
                e.Graphics,
                new Rectangle(e.Bounds.Location,
                              new Size(this.Width - e.Bounds.X - 10, e.Bounds.Height)),
                _selectedColor1,
                _selectedColor2,
                Color.FromArgb(200, 255, 255, 255),
                0.45f,
                true,
                LinearGradientMode.Vertical);            }            e.Graphics.DrawString(e.Node.Text, this.Font, new SolidBrush(Color.Black), e.Bounds);
            //this.Invalidate();
        }

Answer 3

不是属性，是treeview的drawnode事件，看msdn

Answer 4

重新循环下，把节点的背景颜色设为空 Color.Empty

Answer 5

   private void treeView1_DrawNode(object sender, DrawTreeNodeEventArgs e)
        {
            TreeNode treeNode = e.Node;
            if (treeNode.IsSelected)
            {                RenderBackgroundInternal(
                e.Graphics,
                new Rectangle(e.Bounds.Location,
                              new Size(this.Width - e.Bounds.X - 10, e.Bounds.Height)),
                _selectedColor1,
                _selectedColor2,
                Color.FromArgb(200, 255, 255, 255),
                0.45f,
                true,
                LinearGradientMode.Vertical);            }
            else if (e.State==TreeNodeStates.Focused)
            {
                RenderBackgroundInternal(
                e.Graphics,
                e.Bounds,
                _focusedColor1,
                _selectedColor2,
                Color.FromArgb(200, 255, 255, 255),
                0.45f,
                true,
                LinearGradientMode.Vertical);
            }            e.Graphics.DrawString(e.Node.Text, this.Font, new SolidBrush(Color.Black), e.Bounds);