chart 多条曲线怎么搞?

ankyers 2014-04-16 11:16:25

数据库里是这样的：
机器编号时间频率
1 2014-04-16 12:23:12 255.5656
2 2014-04-16 12:24:12 255.5656
1 2014-04-16 12:23:12 255.5656
3 2014-04-16 12:25:12 255.5656
1 2014-04-16 12:23:12 255.5656
2 2014-04-16 12:24:12 255.5656
1 2014-04-16 12:23:12 255.5656

想在chart里画3调曲线，X轴是时间 Y轴是频率

单条曲线没问题，多条怎么搞？

 sqlText = "select   时分秒,频率B  from SaveL where 年月日 like '" + date + "' and 仪器编号=" + cid;

        DataTable dt = DBClass.GetDataTable(sqlText, conn);



        ArrayList al = new ArrayList();

        for (int i = 0; i < dt.Rows.Count; i++)

            al.Add(dt.Rows[i]["频率B"].ToString().Trim());



        al.Sort();

        Chart2.DataSource = dt;//绑定数据

        Chart2.Series["Series1"].ChartType = System.Web.UI.DataVisualization.Charting.SeriesChartType.Line;//设置图表类型

        Chart2.Series[0].XValueMember = "时分秒";//X轴数据成员列

        Chart2.Series[0].YValueMembers = "频率B";//Y轴数据成员列

        Chart2.ChartAreas["ChartArea1"].AxisX.Title = "时间";//X轴标题

        //  Chart1.ChartAreas["ChartArea1"].AxisX.TitleAlignment = StringAlignment.Far;//设置Y轴标题的名称所在位置位远

        Chart2.ChartAreas["ChartArea1"].AxisY.Title = "频率";//X轴标题11             Chart1.ChartAreas["ChartArea1"].AxisY.TitleAlignment = StringAlignment.Far;//设置Y轴标题的名称所在位置位远

        Chart2.ChartAreas["ChartArea1"].AxisX.Interval = 60;//X轴数据的间距

        // Chart1.ChartAreas["ChartArea1"].AxisY.Maximum = (double)dt.Compute("max(频率A)", "");

        // dt.Select("max(频率A) as maxdata");

        Chart2.ChartAreas["ChartArea1"].AxisY.Maximum = Convert.ToDouble(al[al.Count - 1].ToString());

        Chart2.ChartAreas["ChartArea1"].AxisY.Minimum = Convert.ToDouble(al[0].ToString());

        Chart2.ChartAreas["ChartArea1"].AxisX.MajorGrid.Enabled = false;//不显示竖着的分割线

...全文

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智者知已应修善业 2015-05-15

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http://blog.csdn.net/xianfajushi/article/details/7493697

qq_14901481 2015-05-15

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同问！顶起来！

x3325426 2014-04-16

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看看............

ar 2014-04-16

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自己用GDI+画多好

lyx266 2014-04-16

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Series series = new Series("金额", ViewType.Line);
Series series_cost = new Series("成本", ViewType.Line);
SeriesPoint point;
DataTable dt = GetDataSource;
for (int i = 0; i < dt.Rows.Count; i++)
{
point = new SeriesPoint(dt.Rows[i]["week"].ToString(), Convert.ToDouble(dt.Rows[i]["money"].ToString()));
series.Points.Add(point);
point = new SeriesPoint(dt.Rows[i]["week"].ToString(), Convert.ToDouble(dt.Rows[i]["cost"].ToString()));
series_cost.Points.Add(point);
}
this.WebChartControl1.Series.Add(series);
this.WebChartControl1.Series.Add(series_cost);