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();