StripLine.Interval Propiedad
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Obtiene o establece el intervalo para una franja y determina si la franja se dibuja una vez o de forma repetida.
public:
property double Interval { double get(); void set(double value); };[System.ComponentModel.Bindable(true)]
[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.Attribute)]
public double Interval { get; set; }[<System.ComponentModel.Bindable(true)>]
[<System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.Attribute)>]
member this.Interval : double with get, setPublic Property Interval As DoubleValor de propiedad
Valor double que representa el intervalo entre las franjas. El valor predeterminado es 0.0.
- Atributos
Ejemplos
En el ejemplo de código siguiente se muestran tres aplicaciones de franjas. En primer lugar, las franjas horizontales se agregan a intervalos periódicos. En segundo lugar, se agregan franjas verticales para resaltar los puntos de datos de fin de semana. Por último, se agrega una franja no periódica para indicar la media de los puntos de datos de la primera serie del gráfico.
Imports System.Web.UI.DataVisualization.Charting
Public Partial Class StripLines
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' Add chart data before adding strip lines.
AddChartData()
' Adds repeating horizontal strip lines.
AddHorizRepeatingStripLines()
' Highlights weekend points using strip lines.
HighlightWeekendsWithStripLines()
' Adds a threshold line using strip lines.
AddThresholdStripLine()
End Sub
''' <summary>
''' Adds a week of data with values between 20 and 35.
''' </summary>
Private Sub AddChartData()
' Declare new random variable
Dim rand As New Random()
For i As Integer = 0 To 6
' Add a week of data
chart1.Series(0).Points.AddXY(DateTime.Now.AddDays(i), rand.[Next](20, 35))
Next
End Sub
''' <summary>
''' Adds repeating horizontal strip lines at intervals of 5.
''' </summary>
Private Sub AddHorizRepeatingStripLines()
' Instantiate new strip line
Dim stripLine1 As New StripLine()
stripLine1.StripWidth = 2.5
stripLine1.Interval = 5
' Consider adding transparency so that the strip lines are lighter
stripLine1.BackColor = Color.FromArgb(120, Color.Red)
' Add the strip line to the chart
chart1.ChartAreas(0).AxisY.StripLines.Add(stripLine1)
End Sub
''' <summary>
''' Adds strip lines to highlight weekend values.
''' </summary>
Private Sub HighlightWeekendsWithStripLines()
' Set strip line to highlight weekends
Dim stripLine2 As New StripLine()
stripLine2.BackColor = Color.FromArgb(120, Color.Gold)
stripLine2.IntervalOffset = -1.5
stripLine2.IntervalOffsetType = DateTimeIntervalType.Days
stripLine2.Interval = 1
stripLine2.IntervalType = DateTimeIntervalType.Weeks
stripLine2.StripWidth = 2
stripLine2.StripWidthType = DateTimeIntervalType.Days
' Add strip line to the chart
chart1.ChartAreas(0).AxisX.StripLines.Add(stripLine2)
' Set the axis label to show the name of the day
' This is done in order to demonstrate that weekends are highlighted
chart1.ChartAreas(0).AxisX.LabelStyle.Format = "ddd"
End Sub
''' <summary>
''' Adds a horizontal threshold strip line at the calculated mean
''' value of all data points in the first series of the chart.
''' </summary>
Private Sub AddThresholdStripLine()
Dim stripLine3 As New StripLine()
' Set threshold line so that it is only shown once
stripLine3.Interval = 0
' Set the threshold line to be drawn at the calculated mean of the first series
stripLine3.IntervalOffset = chart1.DataManipulator.Statistics.Mean(chart1.Series(0).Name)
stripLine3.BackColor = Color.DarkGreen
stripLine3.StripWidth = 0.25
' Set text properties for the threshold line
stripLine3.Text = "Mean"
stripLine3.ForeColor = Color.Black
' Add strip line to the chart
chart1.ChartAreas(0).AxisY.StripLines.Add(stripLine3)
End Sub
End Class
public partial class StripLines : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
// Add chart data
AddChartData();
// Adds repeating horizontal strip lines.
AddHorizRepeatingStripLines();
// Highlights weekend points using strip lines.
HighlightWeekendsWithStripLines();
// Adds a threshold line using strip lines.
AddThresholdStripLine();
}
/// <summary>
/// Adds a week of data with values between 20 and 35.
/// </summary>
private void AddChartData()
{
// Declare new random variable
Random rand = new Random();
// Add a week of data
for (int i = 0; i < 7; i++)
{
chart1.Series[0].Points.AddXY(DateTime.Now.AddDays(i), rand.Next(20,35));
}
}
/// <summary>
/// Adds repeating horizontal strip lines at intervals of 5.
/// </summary>
private void AddHorizRepeatingStripLines()
{
// Instantiate new strip line
StripLine stripLine1 = new StripLine();
stripLine1.StripWidth = 0;
stripLine1.BorderColor = Color.Black;
stripLine1.BorderWidth = 3;
stripLine1.Interval = 5;
// Consider adding transparency so that the strip lines are lighter
stripLine1.BackColor = Color.FromArgb(120, Color.Red);
stripLine1.BackSecondaryColor = Color.Black;
stripLine1.BackGradientStyle = GradientStyle.LeftRight;
// Add the strip line to the chart
chart1.ChartAreas[0].AxisY.StripLines.Add(stripLine1);
}
/// <summary>
/// Adds strip lines to highlight weekend values.
/// </summary>
private void HighlightWeekendsWithStripLines()
{
// Set strip line to highlight weekends
StripLine stripLine2 = new StripLine();
stripLine2.BackColor = Color.FromArgb(120, Color.Gold);
stripLine2.IntervalOffset = -1.5;
stripLine2.IntervalOffsetType = DateTimeIntervalType.Days;
stripLine2.Interval = 1;
stripLine2.IntervalType = DateTimeIntervalType.Weeks;
stripLine2.StripWidth = 2;
stripLine2.StripWidthType = DateTimeIntervalType.Days;
// Add strip line to the chart
chart1.ChartAreas[0].AxisX.StripLines.Add(stripLine2);
// Set the axis label to show the name of the day
// This is done in order to demonstrate that weekends are highlighted
chart1.ChartAreas[0].AxisX.LabelStyle.Format = "ddd";
}
/// <summary>
/// Adds a horizontal threshold strip line at the calculated mean
/// value of all data points in the first series of the chart.
/// </summary>
private void AddThresholdStripLine()
{
StripLine stripLine3 = new StripLine();
// Set threshold line so that it is only shown once
stripLine3.Interval = 0;
// Set the threshold line to be drawn at the calculated mean of the first series
stripLine3.IntervalOffset = chart1.DataManipulator.Statistics.Mean(chart1.Series[0].Name);
stripLine3.BackColor = Color.DarkGreen;
stripLine3.StripWidth = 0.25;
// Set text properties for the threshold line
stripLine3.Text = "Mean";
stripLine3.ForeColor = Color.Black;
// Add strip line to the chart
chart1.ChartAreas[0].AxisY.StripLines.Add(stripLine3);
}
}
Comentarios
Al establecer la propiedad en un valor de Interval cero (0,0), se mostrará una franja, con un ancho especificado por la StripWidth propiedad . Cuando se establece Interval en un valor distinto de cero, se mostrarán varias franjas. La propiedad define la unidad que se usa Interval para la IntervalType propiedad .