private void treeList1_CustomDrawNodeButton(object sender, CustomDrawNodeButtonEventArgs e)
{
Brush backBrush = e.Cache.GetSolidBrush(Color.White);
e.Graphics.FillRectangle(backBrush, e.Bounds);
ControlPaint.DrawBorder(e.Graphics, e.Bounds, Color.Gray, ButtonBorderStyle.Solid);
string displayCharacter = e.Expanded ? "-" : "+";
StringFormat outCharacterFormat = new StringFormat();
outCharacterFormat.Alignment = StringAlignment.Center;
outCharacterFormat.LineAlignment = StringAlignment.Center;
e.Graphics.DrawString(displayCharacter, new Font("Tahoma", 11),
new SolidBrush(Color.Black), e.Bounds, outCharacterFormat);
e.Handled = true;
}
private void treeClass_CustomDrawNodeButton(object sender, CustomDrawNodeButtonEventArgs e)
{
}