DialogEditFormBehavior.ValidateRow Event

Occurs after a user saves changes made in the dialog edit form. This event allows you to validate values, check database constraints, and save changes to the database.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v23.2.Extensions.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public event EventHandler<EditFormRowValidationArgs> ValidateRow

VB.NET

Public Event ValidateRow As EventHandler(Of EditFormRowValidationArgs)

Event Data

The ValidateRow event's data class is EditFormRowValidationArgs. The following properties provide information specific to this event:

Property	Description
CancellationToken	Gets a token that allows you to respond to a task cancellation request invoked by the GridControl.
EditOperationContext	Gets the edit operation’s data context.
IsNewItem	Gets whether the dialog edit form was invoked to add a new item to the GridControl.
Item	Gets the processed data record.
ValidateAsync	Gets or sets the task that validates changes and posts them to the data source.

Remarks

After a user saves changes made in the dialog edit form, the behavior raises the ValidateRow event and executes the ValidateRowCommand.

Related GitHub Examples

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

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.

XAML

wpf-data-grid-implement-crud-operations/CS/CodeBehind/EFCore/InstantFeedbackMode/MainWindow.xaml#L47

<dxg:DialogEditFormBehavior x:Name="EditFormBehavior" KeyProperty="Id"
                            CreateEditItemViewModel="OnCreateEditEntityViewModel" ValidateRow="OnValidateRow"
                            ValidateRowDeletion="OnValidateRowDeletion">