{
pen pen = new pen(new solidbrush(linecolor), 1);
e.graphics.drawline(pen, ptstart, ptend);
}
/// <summary>
/// 显示rowheaders的标题
/// </summary>
/// <param name="e"></param>
/// <param name="source"></param>
private void showcolumntitles(painteventargs e)
{
string strheader = rowheadercaption;
int ix = markerwith + 5;
