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Knowledgebase: Technical Support > API > BackEnd API's/VBL > Backoffice API > Methods
GetChartHistory
Posted by Mohammad Rahhal, Last modified by Laith Ghawi on 01 July 2019 11:55 AM

Syntax

 Public Function GetChartHistory(SymbolID As Integer, Period As PeriodNoEnum, BeforeDate As Date, NumberOfBars As Integer) As CallingResultsEnum

Description

This method is used to return the open, close, high and low prices for the chart on specific period. After GetChartHistory method executes the ChartHistoryRecieved event fires.

Parameters

Parameter Description 
SymbolID Trading symbol name to get its' history , value of type is Integer
Period Chart time frame, value of type PeriodNoEnum 
BeforeDate Date value to get the previous chart history 
NumberOfBars Bars Count to get its' history, value of type is Integer.

Return value

Returns an integer value of type CallingResultsEnum , if the request sent to the server successfully it will return SuccessResult.

Sample

 Private Sub Button1_Click (ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click 

          'BOAPI is a predefined variable as CVertexFXBOAPI10

          Dim Result As CVertexFXClientAPI10.CallingResultsEnum

      Result = BOAPI.GetChartHistory(BOAPI.SymbolByName("GOLD").ID, OneMinute, Now, 5000)

      Msgbox ("Get Chart history result: " & Result.ToString)

 End Sub

See Also


VertexFX Backoffice API Index

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