DevExpress之ChartControl用法实例总结

devexpress中的chartcontrol顾名思义就是数据基于图表展示，其关键在于series上的处理。本文实例展示了chartcontrol的用法，具体内容如下：

主要功能代码部分如下：

using system;
using system.drawing;
using devexpress.xtracharts;

namespace devexpressutilhelpv3
{
  public static class charttoolv3
  {
    /// <summary>
    /// 创建series
    /// </summary>
    /// <param name="chat">chartcontrol</param>
    /// <param name="seriesname">series名字『诸如：理论电量』</param>
    /// <param name="seriestype">seriestype『枚举』</param>
    /// <param name="datasource">数据源</param>
    /// <param name="xbindname">chartcontrol的x轴绑定</param>
    /// <param name="ybindname">chartcontrol的y轴绑定</param>
    public static void createseries(this chartcontrol chat, string seriesname, viewtype seriestype, object datasource, string xbindname, string ybindname)
    {
      createseries(chat, seriesname, seriestype, datasource, xbindname, ybindname, null);
    }
    /// <summary>
    /// 创建series
    /// </summary>
    /// <param name="chat">chartcontrol</param>
    /// <param name="seriesname">series名字『诸如：理论电量』</param>
    /// <param name="seriestype">seriestype『枚举』</param>
    /// <param name="datasource">数据源</param>
    /// <param name="xbindname">chartcontrol的x轴绑定</param>
    /// <param name="ybindname">chartcontrol的y轴绑定</param>
    /// <param name="createseriesrule">series自定义『委托』</param>
    public static void createseries(this chartcontrol chat, string seriesname, viewtype seriestype, object datasource, string xbindname, string ybindname, action<series> createseriesrule)
    {
      if (chat == null)
        throw new argumentnullexception("chat");
      if (string.isnullorempty(seriesname))
        throw new argumentnullexception("seriestype");
      if (string.isnullorempty(xbindname))
        throw new argumentnullexception("xbindname");
      if (string.isnullorempty(ybindname))
        throw new argumentnullexception("ybindname");

      series _series = new series(seriesname, seriestype);
      _series.argumentscaletype = scaletype.qualitative;
      _series.argumentdatamember = xbindname;
      _series.valuedatamembers[0] = ybindname;

      _series.datasource = datasource;
      if (createseriesrule != null)
        createseriesrule(_series);
      chat.series.add(_series);
    }

  }
}

代码使用示例如下：

public form1()
{
  initializecomponent();
}
private void form1_load(object sender, eventargs e)
{
  datatable _dt = createtestdb();
  chartcontrol1.createseries("理论功率", viewtype.spline, _dt, "time", "power");
  chartcontrol1.createseries("实际功率", viewtype.spline, _dt, "time", "actulpower");
}
/// <summary>
/// 准备数据源
/// </summary>
/// <returns>datatable</returns>
private datatable createtestdb()
{
  datatable _testdata = new datatable();
  _testdata.columns.add(new datacolumn("time", typeof(string)));
  _testdata.columns.add(new datacolumn("power", typeof(decimal)));
  _testdata.columns.add(new datacolumn("actulpower", typeof(decimal)));
  random _rm = new random();
  for (int i = 0; i < 24; i++)
  {
 datarow _drnew = _testdata.newrow();
 _drnew["time"] = string.format("{0}点", i);
 _drnew["power"] = 250;
 _drnew["actulpower"] = _rm.next(220, 245);
 _testdata.rows.add(_drnew);
  }
  return _testdata;
}

上述代码运行效果如下图所示：