IModelValidationContext.AllowInplaceValidation Property

Specifies whether or not in-place validation is allowed for the current context.

Namespace : DevExpress.ExpressApp.Validation

Assembly : DevExpress.ExpressApp.Validation.v25.2.dll

NuGet Package : DevExpress.ExpressApp.Validation

Declaration

C#
VB.NET

csharp

[DefaultValue(false)]
bool AllowInplaceValidation { get; set; }

<DefaultValue(False)>
Property AllowInplaceValidation As Boolean

Property Value

Type	Default	Description
Boolean	false

true , if the current context uses in-place validation; otherwise, false.

Remarks

In-place validation occurs immediately for the current context after the input focus changes. It is enabled for the Save context by default.

The following error message is displayed when the input focus changes.

The in-place validation occurs only if the rule evaluation does not require querying additional data from the server. Thus, only the following rules can be validated immediately.

As the rule evaluation occurs on the client side, the in-place validation does not occur when:

the rule’s target property is a collection, image or reference property (except for RuleReqiredField which is supported for reference properties);
the ParametersMode type parameter passed to the RuleRange or the RuleValueComparison attribute is set to Expression ;
the RuleBaseAttribute.TargetCriteria is specified.

When in-place validation is enabled, the regular validation mechanism is still triggered when an Action associated with the current context is executed.

Note

The asterisk (*) symbol is appended to an editor label when the RuleRequiredField is applied.

Important

The in-place validation engine relies on Controllers provided in the platform-specific ValidationWindowsFormsModule.