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ChartCalculatedFieldType Enum

Lists a calculated field's returned value types.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v20.1.dll

Declaration

public enum ChartCalculatedFieldType
Public Enum ChartCalculatedFieldType

Members

Name Description
None

Indicates that the field's type is undefined and determined based on the returned object during chart initialization.

String

Indicates that the field returns a string value as a sequence of UTF-16 code units (the String type).

DateTime

Indicates that the field returns a value expressed as a date and time of day (the DateTime type).

TimeSpan

Indicates that the field returns a value as a time interval (the TimeSpan type).

Byte

Indicates that the field returns an 8-bit unsigned integer value (the Byte type).

Int16

Indicates that the field returns a 16-bit signed integer value (the Int16 type).

Int32

Indicates that the field returns a 32-bit signed integer value (the Int32 type).

Float

Indicates that the field returns a single-precision floating-point value (the Single type).

Double

Indicates that the field returns a double-precision floating-point value (the Double type).

Decimal

Indicates that the field returns a decimal value (the Decimal type).

Boolean

Indicates that the field returns a Boolean (true or false) value (the Boolean type).

Guid

Indicates that the field returns a global unique identifier value (the Guid type).

Related API Members

The following properties accept/return ChartCalculatedFieldType values:

Examples

The following example shows how to create a calculated field and then use this field as a data source for a series. The field's values are calculated by the following expression: [Time.Seconds] * [Velocity].

<dxc:ChartControl x:Name="chartControl">
    <dxc:ChartControl.DataContext>
        <local:ChartViewModel/>
    </dxc:ChartControl.DataContext>
    <dxc:ChartControl.CalculatedFields>
        <dxc:ChartCalculatedField FieldName="Displacement" 
                                  Expression="[Time.Seconds] * [Velocity]" 
                                  FieldType="Double"/>
    </dxc:ChartControl.CalculatedFields>
    <dxc:XYDiagram2D>
        <dxc:SplineSeries2D DisplayName="Series" 
                            DataSource="{Binding DataPoints}"
                            ArgumentDataMember="Time"
                            ValueDataMember="Displacement" 
                            CrosshairLabelPattern="{}{Displacement:f1}" 
                            MarkerVisible="True"/>
        ...
    </dxc:XYDiagram2D>
</dxc:ChartControl>
See Also