AxisScaleBreakStyle.StartFromZero Propriété

Définition

Espace de noms:

System.Web.UI.DataVisualization.Charting

Assembly:

System.Web.DataVisualization.dll

Obtient ou définit une valeur d'énumération StartFromZero qui indique si le changement d'échelle doit commencer à partir de zéro.

public:
 property System::Web::UI::DataVisualization::Charting::StartFromZero StartFromZero { System::Web::UI::DataVisualization::Charting::StartFromZero get(); void set(System::Web::UI::DataVisualization::Charting::StartFromZero value); };

public System.Web.UI.DataVisualization.Charting.StartFromZero StartFromZero { get; set; }

member this.StartFromZero : System.Web.UI.DataVisualization.Charting.StartFromZero with get, set

Public Property StartFromZero As StartFromZero

Valeur de propriété

StartFromZero

Valeur d'énumération StartFromZero qui indique si le changement d'échelle doit commencer à partir de zéro.

Exemples

L’exemple de code suivant montre comment activer et personnaliser un scale-break une fois que le Chart contrôle a été ajouté à l’aire de conception.

Imports System.Web.UI.DataVisualization.Charting

Private Function AddChartData()

    chart1.Series("Default").Points.Add(New DataPoint(1, 2))
    chart1.Series("Default").Points.Add(New DataPoint(2, 4))
    chart1.Series("Default").Points.Add(New DataPoint(3, 400000))
    chart1.Series("Default").Points.Add(New DataPoint(4, 3))

End Sub

Private Function AddScaleBreaks()

   ' Enable scale breaks.
   chart1.ChartAreas("Default").AxisY.ScaleBreakStyle.Enabled = True

   ' Show scale break if more than 25% of the chart is empty space.
   chart1.ChartAreas("Default").AxisY.ScaleBreakStyle.CollapsibleSpaceThreshold = 25

   ' Set the line width of the scale break.
   chart1.ChartAreas("Default").AxisY.ScaleBreakStyle.LineWidth = 2

   ' Set the color of the scale break.
   chart1.ChartAreas("Default").AxisY.ScaleBreakStyle.LineColor = Color.Red

   ' If all data points are significantly far from zero, the chart will calculate the scale minimum value.
   chart1.ChartAreas("Default").AxisY.ScaleBreakStyle.StartFromZero = StartFromZero.Auto

   ' Set the spacing gap between the lines of the scale break (as a percentage of the Y-axis).
   chart1.ChartAreas["Default"].AxisY.ScaleBreakStyle.Spacing = 2;

End Function

using System.Web.UI.DataVisualization.Charting

private void AddChartData()
{
   chart1.Series["Series1"].Points.Add(new DataPoint(1, 2));
   chart1.Series["Series1"].Points.Add(new DataPoint(2, 4));
   chart1.Series["Series1"].Points.Add(new DataPoint(3, 400000));
   chart1.Series["Series1"].Points.Add(new DataPoint(4, 3));
}

private void AddScaleBreaks()
{
   // Enable scale breaks.
   chart1.ChartAreas["ChartArea1"].AxisY.ScaleBreakStyle.Enabled = true;

   // Show scale break if more than 25% of the chart is empty space.
   chart1.ChartAreas["ChartArea1"].AxisY.ScaleBreakStyle.CollapsibleSpaceThreshold = 25;

   // Set the line width of the scale break.
   chart1.ChartAreas["ChartArea1"].AxisY.ScaleBreakStyle.LineWidth = 2;

   // Set the color of the scale break.
   chart1.ChartAreas["ChartArea1"].AxisY.ScaleBreakStyle.LineColor = Color.Red;

   // If all data points are significantly far from zero, the chart will calculate the scale minimum value.
   chart1.ChartAreas["ChartArea1"].AxisY.ScaleBreakStyle.StartFromZero = StartFromZero.Auto;

   // Set the spacing gap between the lines of the scale break (as a percentage of the Y-axis).
    chart1.ChartAreas["ChartArea1"].AxisY.ScaleBreakStyle.Spacing = 2;
}

Remarques

Si la propriété a la StartFromZeroAutovaleur , le graphique calcule automatiquement s’il faut démarrer l’échelle minimale de l’axe Y à partir de la valeur la plus basse de la série ou de zéro.