StripLine.Interval Proprietà

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, set

Public Property Interval As Double

Valore della proprietà

Valore double che rappresenta l'intervallo tra strisce. Il valore predefinito è 0,0.

Attributi

BindableAttribute PersistenceModeAttribute

Esempio

Nell'esempio di codice seguente vengono illustrate tre applicazioni di righe di strip. Prima di tutto, le linee di striscia orizzontale vengono aggiunte a intervalli ricorrenti. In secondo luogo, le righe di strip verticale vengono aggiunte per evidenziare i punti dati fine settimana. Infine, viene aggiunta una riga di striscia non ricorrente per indicare la media dei punti dati nella prima serie del grafico.

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);  
        }  
    }  

Commenti

Quando si imposta la Interval proprietà su un valore pari a zero (0,0), verrà visualizzata una riga di striscia, con una larghezza specificata dalla StripWidth proprietà. Quando si imposta Interval su un valore diverso da zero, verranno visualizzate più righe di strip. L'unità utilizzata per la IntervalIntervalType proprietà è definita dalla proprietà .

Si applica a