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
{
///
/// 创建Series
///
/// ChartControl
/// Series名字『诸如：理论电量』
/// seriesType『枚举』
/// 数据源
/// ChartControl的X轴绑定
/// ChartControl的Y轴绑定
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);
}
///
/// 创建Series
///
/// ChartControl
/// Series名字『诸如：理论电量』
/// seriesType『枚举』
/// 数据源
/// ChartControl的X轴绑定
/// ChartControl的Y轴绑定
/// Series自定义『委托』
public static void CreateSeries(this ChartControl chat, string seriesName, ViewType seriesType, object dataSource, string xBindName, string yBindName, Action 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");
}
///
/// 准备数据源
///
/// DataTable
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：