循環創建圖表控件中的多個系列

Question

我想構建一個返回圖表的函數。我想有一個參數來說明我可能需要多個系列的時間。如何循環創建多個系列？我想你會需要每個系列的變量。該功能如下。我認爲如果有5個系列，每個「數據集」變量都應該有自己的名字。然後我是否只通過索引來引用它們？

Public Shared Function MakeChart(ByVal form As Form, Optional ByVal numseries As Integer = 0) As Chart 

    ' Add any initialization after the InitializeComponent() call. 
    Dim SampleChart As Chart = New Chart() 
    Dim MainChartArea As ChartArea = New ChartArea() 
    Dim ChartLegend As Legend = New Legend() 
    Dim Dataseries As Series = New Series() 
    Dim seriesname As String = "" 

    'add additonal series if the parameter exists 
    If numseries > 0 Then 
     For i As Integer = 0 To numseries - 1 
      seriesname = "Series" & Convert.ToString(i) 
      Dataseries = SampleChart.Series.Add(i) 
      Dataseries.Name = seriesname 
     Next 
    Else 
     DataSeries = SampleChart.Series.Add("Series1") 
     Dataseries.Name = "Series1" 
    End If 
    form.Controls.Add(SampleChart) 

    SampleChart.ChartAreas.Add(MainChartArea) 
    SampleChart.Legends.Add(ChartLegend) 
    SampleChart.Dock = DockStyle.Fill 
    SampleChart.TabIndex = 0 
    Return SampleChart 
End Function 

Answer 1

指數或字符串，那麼是的，你可以通過名字來描述系列：

MessageBox.Show("First Series is " & SampleChart.Series(0).Name) 

或

MessageBox.Show("First Series is " & SampleChart.Series("Series0").Name) 

但是請注意：如果未找到字符串，則控件會拋出一個ArgumentException錯誤。