我要评论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：
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