■ FastLine 클래스의 TreatNulls 속성을 사용해 NULL 값을 처리하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Drawing; using System.Windows.Forms; using Steema.TeeChart.Drawing; using Steema.TeeChart.Styles; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Text = "FastLine 클래스 : TreatNulls 속성을 사용해 NULL 값 처리하기"; this.tChart.Panel.Pen = new ChartPen(Color.Black); double?[] xValueArray = new double?[200]; double?[] yValueArray = new double?[200]; Random random = new Random(); for(int i = 0; i < 200; i++) { xValueArray[i] = i; if(i % 4 == 0) { yValueArray[i] = null; } else { yValueArray[i] = random.NextDouble(); } } FastLine fastLine = new FastLine(this.tChart.Chart); fastLine.TreatNulls = TreatNullsStyle.DoNotPaint; fastLine.Add(xValueArray, yValueArray); } #endregion } } |
