Validator.GetService(IServiceProvider) Method

Takes an IServiceProvider instance as a parameter and returns an instance of IRuleSet.

Namespace: DevExpress.Persistent.Validation

Assembly: DevExpress.Persistent.Base.v25.2.dll

NuGet Package: DevExpress.Persistent.Base

Declaration

C#

public static IRuleSet GetService(
    IServiceProvider serviceProvider
)

VB.NET

Public Shared Function GetService(
    serviceProvider As IServiceProvider
) As IRuleSet

Parameters

Name	Type	Description
serviceProvider	IServiceProvider	An object that implements the IServiceProvider interface.

Returns

Type	Description
IRuleSet	An object that implements the IRuleSet interface.

Remarks

Use this method to access an object that implements the IRuleSet interface. Refer to the IRuleSet topic for more information.

The GetService method can be used in both .NET applications and older .NET Framework applications to access IRuleSet. In .NET Framework applications, this method accepts null as the serviceProvider parameter (the XafApplication.ServiceProvider property always returns null under .NET Framework).

Example

The following code snippet demonstrates how to use the Validator.GetService method to access an IRuleSet instance and use it to trigger validation against a specific object and context, and then handle the result:

File: MySolution.Module.Controllers.MyController.cs

C#

using DevExpress.Persistent.Validation;
// ...
namespace MySolution.Module.Controllers;
public partial class MyController : ViewController {
    // ...
    protected override void OnActivated() {
        base.OnActivated();
        RuleSetValidationResult result = Validator.GetService(Application.ServiceProvider).ValidateTarget(
            View.ObjectSpace, 
            View.CurrentObject, 
            "MyContext"
        );
        if (result.ValidationOutcome > ValidationOutcome.Information)
            ((Contact)View.CurrentObject).Notes += "[Validation Error] " + result.Results[0].ErrorMessage;
    }
}

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the GetService(IServiceProvider) method.

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-highlight-invalid-properties-when-a-view-is-activated/CS/EFCore/ValidateHighlightEF/ValidateHighlightEF.Module/Controllers/ImmediateValidationController.cs#L55

if (resultsHighlightController != null) {
    IRuleSet ruleSet = Validator.GetService(Application.ServiceProvider);
    RuleSetValidationResult result = ruleSet.ValidateAllTargets(ObjectSpace, targets, DefaultContexts.Save);