DXErrorProvider.CanExtend(Object) Method
Gets a value indicating whether a control can be extended.
Namespace: DevExpress.XtraEditors.DXErrorProvider
Assembly: DevExpress.XtraEditors.v18.2.dll
Declaration
Parameters
| Name | Type | Description |
|---|---|---|
| extendee | Object | The control to be extended. |
Returns
| Type | Description |
|---|---|
| Boolean | true if the control can be extended; otherwise, false. |
Remarks
This method implements the CanExtend method. It indicates whether the DXErrorProvider can provide properties for specific controls.
The DXErrorProvider can associate errors with editors derived from the BaseEdit class. So, the CanExtend method returns true for BaseEdit descendants. For other controls, the DXErrorProvider doesn’t permit you to set errors, and the CanExtend method returns false.
At design time, after a DXErrorProvider object has been added to a form, editors derived from the BaseEdit class publish the ‘Error on dxErrorProivider1’ and ‘ErrorType on dxErrorProvider1’ properties. These allow you to associate an error of a specific error type, with a control. To set errors for these controls in code, use the DXErrorProvider.SetError and DXErrorProvider.SetErrorType methods.