■ Line 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> /// 라인 /// </summary> private Line line; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Text = "Line 클래스 : TreatNulls 속성을 사용해 NULL 값 처리하기"; this.treatNullsComboBox.DropDownStyle = ComboBoxStyle.DropDownList; this.treatNullsComboBox.Items.Add(TreatNullsStyle.DoNotPaint); this.treatNullsComboBox.Items.Add(TreatNullsStyle.Skip ); this.treatNullsComboBox.Items.Add(TreatNullsStyle.Ignore ); this.treatNullsComboBox.SelectedIndex = 1; this.lineStyleRadioButton.Checked = true; this.tChart.Panel.Pen = new ChartPen(Color.Black); this.line = new Line(); this.line.TreatNulls = TreatNullsStyle.Skip; this.line.FillSampleValues(20); this.line.SetNull(12); this.line.YValues[12] = 0; this.line.SetNull(13); this.line.YValues[13] = 0; this.tChart.Series.Add(this.line); this.treatNullsComboBox.SelectedIndexChanged += treatNullsComboBox_SelectedIndexChanged; this.lineStyleRadioButton.CheckedChanged += styleRadioButton_CheckedChanged; this.horizontalLineStyleRadioButton.CheckedChanged += styleRadioButton_CheckedChanged; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region NULL 처리 콤보 박스 선택 인덱스 변경시 처리하기 - treatNullsComboBox_SelectedIndexChanged(sender, e) /// <summary> /// NULL 처리 콤보 박스 선택 인덱스 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void treatNullsComboBox_SelectedIndexChanged(object sender, EventArgs e) { TreatNullsStyle style = (TreatNullsStyle)this.treatNullsComboBox.SelectedItem; this.line.TreatNulls = style; } #endregion #region 스타일 라디오 버튼 체크 변경시 처리하기 - styleRadioButton_CheckedChanged(sender, e) /// <summary> /// 스타일 라디오 버튼 체크 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void styleRadioButton_CheckedChanged(object sender, EventArgs e) { Series series = tChart.Series[0]; if(this.lineStyleRadioButton.Checked) { Series.ChangeType(ref series, typeof(Line)); } else { Series.ChangeType(ref series, typeof(HorizLine)); } } #endregion } } |
