AxisScaleBreakStyle.StartFromZero Proprietà

Definizione

Spazio dei nomi:

System.Web.UI.DataVisualization.Charting

Assembly:

System.Web.DataVisualization.dll

Ottiene o imposta un valore dell'enumerazione StartFromZero che indica se il cambio di scala deve iniziare da zero.

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

Valore della proprietà

StartFromZero

Valore dell'enumerazione StartFromZero che indica se il cambio di scala deve iniziare da zero.

Esempio

Nell'esempio di codice seguente viene illustrato come abilitare e personalizzare un'interruzione di scala dopo l'aggiunta del controllo all'area Chart di progettazione.

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;  
}  

Commenti

Se la proprietà è impostata su Auto, il StartFromZero grafico calcola automaticamente se avviare la scala dell'asse Y dal valore più basso della serie o da zero.