UltraChart画柱状图上面显示数值

今天弄这个NetAdvantage画图表的东西，没有接触过，现在要下载图片，还要在柱状图的上面显示数值，纠结了一下午，搞定了。

这里只说下载图片和柱状图最上方加数值的问题

1、柱状图上显示数值

//第一种方法
this.UltraChartSScore.Data.ZeroAligned = true;
this.UltraChartSScore.DataSource = dt.DefaultView;
this.UltraChartSScore.DataBind();
ChartTextAppearance text = new ChartTextAppearance();
text.Column = -2;
text.Row = -2;
text.PositionFromRadius = 50;
text.VerticalAlign = System.Drawing.StringAlignment.Far;
text.ItemFormatString = "<DATA_VALUE:00.00>";
text.Visible = true;
UltraChartSScore.ColumnChart.ChartText.Add(text);
this.UltraChartSScore.TitleTop.Text = "主项S得分对比柱状图";
//第二种方法（一个一个的添加）
for (int i = 0; i < dt.Rows.Count; i++)
{
	for (int j = 0; j < 4; j++)
	{
		ChartTextAppearance text = new ChartTextAppearance();
		text.Row = i;
		text.Column = j;
		text.VerticalAlign = System.Drawing.StringAlignment.Far;
		text.ItemFormatString = "<DATA_VALUE:00.00>";
		text.Visible = true;
		chart.ColumnChart.ChartText.Add(text);
	}
}

 2、导出图片

//一定要先绑定UltraChart，如果先绑定，然后有点击图片导出，没有用的
string fulPath="xxxx";
this.UltraChartTScore.SaveTo(fulPath, System.Drawing.Imaging.ImageFormat.Jpeg);//这个是保存为图片的方法
System.IO.FileInfo file = new System.IO.FileInfo(strFileFullPath);
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + strFileName);
Response.ContentType = "application/x-msdownload";
Response.WriteFile(strFileFullPath);
Response.Flush();
file.Delete();
Response.End();