這里重寫一下DrawMode();可以控制選中節點顏色。
TreeView.HideSelection = False;可讓選中節點保持高亮。
參考： http://msdn.microsoft.com/zh-cn/library/system.windows.forms.treeview.hideselection(VS.80).aspx
public FrmMain()
{
InitializeComponent();
treeView1 .HideSelection = False;
// 自已繪制
this.treeView1.DrawMode = TreeViewDrawMode.OwnerDrawText;
this.treeView1.DrawNode += new DrawTreeNodeEventHandler(treeView1_DrawNode);
}
// 在繪制節點事件中，按自已想的繪制
private void treeView1_DrawNode( object sender, DrawTreeNodeEventArgs e)
{
e.DrawDefault = true; // 我這里用默認顏色即可，只需要在TreeView失去焦點時選中節點仍然突顯
return;
if ((e.State & TreeNodeStates.Selected) != 0)
{
// 演示為綠底白字
e.Graphics.FillRectangle(Brushes.DarkBlue, e.Node.Bounds);
Font nodeFont = e.Node.NodeFont;
if (nodeFont == null) nodeFont = ((TreeView)sender).Font;
e.Graphics.DrawString(e.Node.Text, nodeFont, Brushes.White,Rectangle.Inflate(e.Bounds, 2, 0));
}
else
{
e.DrawDefault = true;
}
if ((e.State & TreeNodeStates.Focused) != 0)
{
using (Pen focusPen = new Pen(Color.Black))
{
focusPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
Rectangle focusBounds = e.Node.Bounds;
focusBounds.Size = new Size(focusBounds.Width - 1,
focusBounds.Height - 1);
e.Graphics.DrawRectangle(focusPen, focusBounds);
}
}
}
{
InitializeComponent();
treeView1 .HideSelection = False;
// 自已繪制
this.treeView1.DrawMode = TreeViewDrawMode.OwnerDrawText;
this.treeView1.DrawNode += new DrawTreeNodeEventHandler(treeView1_DrawNode);
}
// 在繪制節點事件中，按自已想的繪制
private void treeView1_DrawNode( object sender, DrawTreeNodeEventArgs e)
{
e.DrawDefault = true; // 我這里用默認顏色即可，只需要在TreeView失去焦點時選中節點仍然突顯
return;
if ((e.State & TreeNodeStates.Selected) != 0)
{
// 演示為綠底白字
e.Graphics.FillRectangle(Brushes.DarkBlue, e.Node.Bounds);
Font nodeFont = e.Node.NodeFont;
if (nodeFont == null) nodeFont = ((TreeView)sender).Font;
e.Graphics.DrawString(e.Node.Text, nodeFont, Brushes.White,Rectangle.Inflate(e.Bounds, 2, 0));
}
else
{
e.DrawDefault = true;
}
if ((e.State & TreeNodeStates.Focused) != 0)
{
using (Pen focusPen = new Pen(Color.Black))
{
focusPen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
Rectangle focusBounds = e.Node.Bounds;
focusBounds.Size = new Size(focusBounds.Width - 1,
focusBounds.Height - 1);
e.Graphics.DrawRectangle(focusPen, focusBounds);
}
}
}