ObjectCreatingEventArgs.Cancel Property

Specifies whether or not an object creation should be canceled.

Namespace: DevExpress.ExpressApp.SystemModule

Assembly: DevExpress.ExpressApp.v18.2.dll

Declaration

C#

public bool Cancel { get; set; }

VB.NET

Public Property Cancel As Boolean

Property Value

Type	Description
Boolean	true, if an object creation should be canceled, otherwise, false.

Remarks

Set the ObjectCreatingEventArgs.DisposeObjectSpaceOnCancel property to true to dispose an Object Space on canceling a new object creation.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Cancel property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XAF_how-to-limit-the-amount-of-objects-created-via-the-new-action-e239/CS/HowToLimitAmountOfObjectsCreatedViaNewAction.Module/LimitTaskAmountController.cs#L27

(e.ObjectSpace.GetObjectsCount(typeof(Task), null) >= 3)) {
 e.Cancel = true;
 throw new UserFriendlyException("Cannot create a task. Maximum allowed task count exceeded.");

VB.NET

XAF_how-to-limit-the-amount-of-objects-created-via-the-new-action-e239/VB/HowToLimitAmountOfObjectsCreatedViaNewAction.Module/LimitTaskAmountController.vb#L28

If (e.ObjectType Is GetType(Task)) AndAlso (e.ObjectSpace.GetObjectsCount(GetType(Task), Nothing) >= 3) Then
     e.Cancel = True
     Throw New UserFriendlyException("Cannot create a task. Maximum allowed task count exceeded.")