■ 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 { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 고속 라인 /// </summary> private FastLine fastLine; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Text = "FastLine 클래스 : TreatNulls 속성을 사용해 NULL 값 처리하기"; this.dontPaintRadioButton.Checked = true; this.tChart.Panel.Pen = new ChartPen(Color.Black); this.fastLine = new FastLine(this.tChart.Chart); this.fastLine.TreatNulls = TreatNullsStyle.DoNotPaint; bool done = false; for(int x = 0; x <= 100; x++) { double y = (x % 2 == 0) ? 10 : 20; if((x >= 30) && (x <= 70)) { if(!done) { this.fastLine.Add(x, 0, Color.Transparent); } done = true; } else { this.fastLine.Add(x, y); } } this.fastLine.GetVertAxis.SetMinMax(-10, 30); this.dontPaintRadioButton.CheckedChanged += treatNullsRadioButton_CheckedChanged; this.skipRadioButton.CheckedChanged += treatNullsRadioButton_CheckedChanged; this.ignoreRadioButton.CheckedChanged += treatNullsRadioButton_CheckedChanged; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region NULL 처리 라디오 버튼 체크 변경시 처리하기 - treatNullsRadioButton_CheckedChanged(sender, e) /// <summary> /// NULL 처리 라디오 버튼 체크 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void treatNullsRadioButton_CheckedChanged(object sender, EventArgs e) { if(this.dontPaintRadioButton.Checked) { this.fastLine.TreatNulls = TreatNullsStyle.DoNotPaint; } else if(this.skipRadioButton.Checked) { this.fastLine.TreatNulls = TreatNullsStyle.Skip; } else { this.fastLine.TreatNulls = TreatNullsStyle.Ignore; } } #endregion } } |
