For Method code types, the CodeText property of a function class must contain the body of a method that calculates the value of function and explicitly returns the value. The expected return value is of type Double. Note that VB syntax requires the inclusion of vbNewLines at the end of each statement in the code.
To write code in Visual Basic
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Copy Code
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Dim code As String = _ "Dim x2 As Double = x*x" & vbNewLine & _ "if x<0 then " & vbNewLine & _ " return x" & vbNewLine & _ "else" & vbNewLine & _ " return 0.5*x2" & vbNewLine & _ " End If" Dim yf As C1.Win.C1Chart.YFunction = New C1.Win.C1Chart.YFunction() yf.CodeType = C1.Win.C1Chart.FunctionCodeTypeEnum.Method yf.CodeLanguage = C1.Win.C1Chart.FunctionCodeLanguageEnum.VB yf.CodeText = code yf.MinX = -5 yf.MaxX = 5 yf.LineStyle.Color = Color.Blue yf.LineStyle.Thickness = 3 C1Chart1.ChartGroups(0).ChartData.FunctionsList.Add(yf) |
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To write code in C#
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Copy Code
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string code = "double x2 = x*x;" + "if( x<0)" + " return x;" + "else" + " return 0.5*x2;"; C1.Win.C1Chart.YFunction yf = new C1.Win.C1Chart.YFunction(); yf.CodeType = C1.Win.C1Chart.FunctionCodeTypeEnum.Method; yf.CodeText = code; yf.MinX = -5; yf.MaxX = 5; yf.LineStyle.Color = Color.Blue; yf.LineStyle.Thickness = 2; c1Chart1.ChartGroups[0].ChartData.FunctionsList.Add(yf); |
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