IRuleSet.ValidateAllTargets(IObjectSpace, IEnumerable, ContextIdentifiers) Method

Silently (without raising the RuleSet.ValidationCompleted event and throwing the ValidationException) validates multiple targets and returns the result.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v25.1.dll

NuGet Package: DevExpress.Persistent.Base

Declaration

C#

RuleSetValidationResult ValidateAllTargets(
    IObjectSpace targetObjectSpace,
    IEnumerable targets,
    ContextIdentifiers contextIDs
)

VB.NET

Function ValidateAllTargets(
    targetObjectSpace As IObjectSpace,
    targets As IEnumerable,
    contextIDs As ContextIdentifiers
) As RuleSetValidationResult

Parameters

Name	Type	Description
targetObjectSpace	IObjectSpace	An IObjectSpace used by a validation target.
targets	IEnumerable	The list of objects to check.
contextIDs	ContextIdentifiers	The ContextIdentifiers object, which is a set of validation contexts for which rules will be collected. Default contexts are stored in the DefaultContexts enumeration.

Returns

Type	Description
DevExpress.Persistent.Validation.RuleSetValidationResult	The validation result. If all rules are satisfied, the RuleSetValidationResult.IsValid property returns true; otherwise, it returns false

Remarks

The following code snippet demonstrates how to use this method to validate objects when an Action is executed:

C#

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.Persistent.Base;
using DevExpress.Persistent.Validation;
// ...
public partial class CustomValidationController : ViewController {
    public CustomValidationController() {
        SimpleAction validationAction = new SimpleAction(this, "ValidateBeforeSave", PredefinedCategory.Edit);
        validationAction.Execute += ValidationAction_Execute;
    }
    private void ValidationAction_Execute(object sender, SimpleActionExecuteEventArgs e) {
        RuleSetValidationResult validationResult = Validator.GetService(Application.ServiceProvider)
            .ValidateAllTargets(ObjectSpace, ObjectSpace.GetObjectsToSave(false), ContextIdentifier.Save);
        ValidationResults obj = new ValidationResults(validationResult, base.Application.Model);
        bool flag = validationResult.State != ValidationState.Invalid;
    }
}