PivotGridControl.ChangeFieldExpandedAsync(PivotGridFieldBase, Boolean, AsyncCompletedHandler) Method
Expands or collapses all values of the specified field asynchronously. Allows you to specify custom actions to be performed after this operation is completed.
Namespace: DevExpress.XtraPivotGrid
Assembly: DevExpress.XtraPivotGrid.v19.1.dll
Declaration
public void ChangeFieldExpandedAsync(
PivotGridFieldBase field,
bool expand,
AsyncCompletedHandler asyncCompleted
)Parameters
| Name | Type | Description |
|---|---|---|
| field | PivotGridFieldBase | A PivotGridFieldBase descendant that specifies the field whose values should be expanded/collapsed. |
| expand | Boolean | true to expand field values; false to collapse them. |
| asyncCompleted | AsyncCompletedHandler | A AsyncCompletedHandler delegate, referencing a method that should be executed after the operation is completed. |
Remarks
The ChangeFieldExpandedAsync method is asynchronous. It starts executing the related operation in a background thread, and immediately returns control. The primary UI thread is not blocked, allowing the application to continue responding to end-user actions. For more information about the asynchronous mode, see Asynchronous Mode.
To collapse or expand all values of a particular field synchronously, use the PivotGridFieldBase.CollapseAll and PivotGridFieldBase.ExpandAll methods, respectively.
To collapse or expand a specific field value, use the PivotGridControl.CollapseValueAsync and PivotGridControl.ExpandValueAsync methods, respectively (or the PivotGridControl.CollapseValue and PivotGridControl.ExpandValue methods, to do this synchronously).
Field values can be collapsed and expanded by end-users, if the field’s PivotGridFieldOptions.AllowExpand property is set to true.