CalculatedField.GetValue Event
Occurs when a calculated field obtains its value, enabling you to return a custom value for this calculated field.
Namespace: DevExpress.XtraReports.UI
Assembly: DevExpress.XtraReports.v20.2.dll
NuGet Packages: DevExpress.Reporting.Core, DevExpress.WindowsDesktop.Reporting.Core
Declaration
Event Data
The GetValue event's data class is GetValueEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Report | Provides access to a report which owns the calculated field, for which the CalculatedField.GetValue event was raised. |
| Row | Provides access to a data row whose data can be used to calculate a calculated field‘s custom value in the CalculatedField.GetValue event handler. |
| Value | Gets or sets a value of a calculated field. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| GetColumnValue(String) | Returns the value of a specified column. |
Remarks
Although the CalculatedField.Expression property supports numerous standard functions, operators and constants, for some tasks these may not be enough. Handle the GetValue event, to make a calculated field return a value based on your custom expression.
The GetValueEventArgs class introduces the GetValueEventArgs.Value property, which accepts the final calculated value for a calculated field, and the GetValueEventArgs.Row and GetValueEventArgs.Report properties, which enable you to obtain any information required to calculate a value for a calculated field.
To learn more, see Calculated Fields Overview.
For code examples, refer to Grouping Data by Days of the Week (Runtime Sample) and Sorting Data by a Custom Field.