Public Overloads Sub FormulaFinancial( _
   ByVal formulaName As FinancialFormula, _
   ByVal parameters As String, _
   ByVal inputSeries As String, _
   ByVal outputSeries As String _
) 

Visual Basic (Usage)	Copy Code
Dim instance As DataManipulator Dim formulaName As FinancialFormula Dim parameters As String Dim inputSeries As String Dim outputSeries As String   instance.FormulaFinancial(formulaName, parameters, inputSeries, outputSeries)

public void FormulaFinancial( 
   FinancialFormula formulaName,
   string parameters,
   string inputSeries,
   string outputSeries
)

Parameters

formulaName

A FinancialFormula enumeration value that determines the technical analysis or time series formula to be used.

parameters

String expression that is used for one or more formula-dependent parameters.

inputSeries

A string expression consisting of one or more series with optional data point values. Multiple "series:values" should be comma-separated (e.g. "Series1:Y,Series2:Y3"). If a Y-value is not specified the first value (Y) is used.

outputSeries

A string expression consisting of one or more series (with an optional value) that will be used to store the formula data (e.g. "Series1:Y,Series2:Y3"). If the output series does not exist at design-time it will be created at run-time, and use default series properties. If no value is specified along with the series (e.g. "Series1") than the first Y-value of the series will be used.

This example demonstrates how to input the High and Low stock values and outputs the Chaikin Oscillator formula.  We make the following assumptions before executing the code sample:

• Series1 is populated with stock data (High, Low, Open and Close values).
• Series2 is populated with volume data.
• Series3 has been added at design-time.

Visual Basic

Copy Code

Imports Dundas.Charting.WinControl ... ' We must create a String expression of comma-separated strings that ' represents input values to pass to the financial formula. In Me case: ' ' "Series1:Y" represents the high price. ' "Series1:Y2" represents the low price. ' "Series1:Y4" represents the close price. ' "Series2:Y" represents the volume. Dim inputValues As String = "Series1:Y,Series1:Y2,Series1:Y4,Series2:Y" ' Some formulas have parameters that can be specified optionally. For ' example, we can create a String expression of comma-separated strings ' that represents the Short period and Long period of the Chaikin ' Oscillator formula. String parameters = "5,12" ' The string that corresponds to the series that will be used to store the output values. Dim outputValues As String = "Series3:Y" ' Call the formula. chart1.DataManipulator.FormulaFinancial(FinancialFormula.ChaikinOscillator, parameters, inputValues, outputValues) ...

C#

Copy Code

using Dundas.Charting.WinControl ... /* We must create a string expression of comma-separated strings that ** represents input values to pass to the financial formula. In this case: ** ** "Series1:Y" represents the high price. ** "Series1:Y2" represents the low price. ** "Series1:Y4" represents the close price. ** "Series2:Y" represents the volume. */ string inputValues = "Series1:Y,Series1:Y2,Series1:Y4,Series2:Y"; /* Some formulas have parameters that can be specified optionally. For ** example, we can create a string expression of comma-separated strings ** that represents the short period and long period of the Chaikin ** Oscillator formula. */ string parameters = "5,12"; // The string that corresponds to the series that will be used to store the output values. string outputValues = "Series3:Y"; // Call the formula. chart1.DataManipulator.FormulaFinancial(FinancialFormula.ChaikinOscillator, parameters, inputValues, outputValues); ...

This method applies a formula to the Y-values of one or more series' data points.

If a formula needs more than one input parameter (e.g. "10,20" for the short and long periods of a Chaikin Oscillator formula) the parameters should be comma-separated. Some parameters can be omitted (they have default values) while others must be set, depending on the formula. If a parameter is missing and is not optional an exception will be thrown.

Each particular formula has certain requirements, which are listed in the formula topics located in the "Formula Reference" folder.

If a specified output series has not been created and added to the SeriesCollection when this function call is made it will be created and added to the collection automatically, and have default Series properties (e.g. column chart type, etc.). In addition, the ChartArea property of the series is set to "Default", and if a chart area with the name "Default" exists in the ChartAreasCollection it will be used to draw the chart. If there is no chart area with this name the first ChartArea object in the collection will be used to display the series.

Note: If you are applying an averaging formula (e.g. Simple Moving Average) see the StartFromFirst property.

For an overview of how to apply a formula see the Using Financial Formulas  topic. For a detailed discussion on a particular formula see that formula's topic in the "Formula Reference" folder.

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference