DevExpress之ChartControl用法實例總結

2020-01-24 02:34:20

字體：大中小

來源：轉載

供稿：網友

DevExpress中的ChartControl顧名思義就是數據基于圖表展示，其關鍵在于Series上的處理。本文實例展示了ChartControl的用法，具體內容如下：

主要功能代碼部分如下：

using System;using System.Drawing;using DevExpress.XtraCharts;namespace DevExpressUtilHelpV3{  public static class ChartToolV3  {    /// <summary>    /// 創建Series    /// </summary>    /// <param name="chat">ChartControl</param>    /// <param name="seriesName">Series名字『諸如：理論電量』</param>    /// <param name="seriesType">seriesType『枚舉』</param>    /// <param name="dataSource">數據源</param>    /// <param name="xBindName">ChartControl的X軸綁定</param>    /// <param name="yBindName">ChartControl的Y軸綁定</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>    /// 創建Series    /// </summary>    /// <param name="chat">ChartControl</param>    /// <param name="seriesName">Series名字『諸如：理論電量』</param>    /// <param name="seriesType">seriesType『枚舉』</param>    /// <param name="dataSource">數據源</param>    /// <param name="xBindName">ChartControl的X軸綁定</param>    /// <param name="yBindName">ChartControl的Y軸綁定</param>    /// <param name="createSeriesRule">Series自定義『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);    }  }}

代碼使用示例如下：

public Form1(){  InitializeComponent();}private void Form1_Load(object sender, EventArgs e){  DataTable _dt = CreateTestDB();  chartControl1.CreateSeries("理論功率", ViewType.Spline, _dt, "time", "Power");  chartControl1.CreateSeries("實際功率", ViewType.Spline, _dt, "time", "ActulPower");}/// <summary>/// 準備數據源/// </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}點", i); _drNew["Power"] = 250; _drNew["ActulPower"] = _rm.Next(220, 245); _testData.Rows.Add(_drNew);  }  return _testData;}

上述代碼運行效果如下圖所示：