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   [Collapse]ChartControl Class
     ChartControl Members
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     [Collapse]RegisterSummaryFunction Method
       RegisterSummaryFunction(String, String, Int32, SummaryFunctionArgumentDescription[], SummaryFunction) Method
       RegisterSummaryFunction(String, String, ScaleType, Int32, SummaryFunctionArgumentDescription[], SummaryFunction) Method
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 End-User Documentation

ChartControl.RegisterSummaryFunction(String, String, ScaleType, Int32, SummaryFunctionArgumentDescription[], SummaryFunction) Method

Registers the custom summary function with the specified settings.

Namespace:DevExpress.XtraCharts
Assembly:DevExpress.XtraCharts.v17.2.UI.dll

Expanded Syntax

Parameters

name
Type: String
A System.String value containing the function's name.
displayName
Type: String
A System.String value containing the function's display name, which is used for localization purposes.
resultScaleType
Type: ScaleType
A DevExpress.XtraCharts.ScaleType enumeration value representing the type of the function's result.
resultDimension
Type: Int32
An integer value representing the dimension of the resulting series point's values.
argumentDescriptions
Type: SummaryFunctionArgumentDescription[]
An array of DevExpress.XtraCharts.SummaryFunctionArgumentDescription objects containing argument descriptions.
function
Type: SummaryFunction
A DevExpress.XtraCharts.SummaryFunction delegate to be registered.

Expanded Remarks

The RegisterSummaryFunction method is intended to register custom summary functions within a chart control. To unregister a specific summary function, the UnregisterSummaryFunction method should be called. Also, you may remove all custom summary functions from the chart, and add all default functions to it by calling the ResetSummaryFunctions method.

Expanded Example

Show Me

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=T257050.

The following example demonstrates how to create a custom summary function, which returns a product of two values (Price * Count). To accomplish this task, it is required to create a summary function delegate and register it via the RegisterSummaryFunction method.

The code below illustrates how this can be done.

Expanded See Also

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