Devexpress xaf validation. This can be done either in code, or in the Model Editor.

• Devexpress xaf validation C#; VB. Feb 16, 2023 · In XAF, you use the Object Space to query and update persistent objects. To minimize security related threats/risks, you must validate user input using multiple strategies. Jun 11, 2021 · Apply a validation rule to the required property. Use Parametrized Actions to execute custom code when a user enters a value into an Action’s editor. FirstOrDefault<ObjectType> method to find a DemoTask object. Jan 23, 2014 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. The XAF validation module is a mature and flexible validation system, which allows you to create rules that can validate any business problem, For more information, check out the module documentation. For instance, you can reuse XAF's ORM data model, business logic, Security System, localization, audit trail, validation, and other XAF modules in non-XAF forms within your existing app. Nov 17, 2012 · You can use the built-in XAF Validation module and the RuleCriteria attribute. Call the static XafApplication. SkipNullOrEmptyValues parameter set to false. Feb 14, 2025 · The attributes can specify validation rules, how the data is displayed, set relationships between classes, and so on. Data, DevExpress. DevExpress Data Editors validate user input when input masks are enabled. WriteLine method. a user should correct validation errors in order to proceed saving (or executing other actions in the current validation context). Note. This module allows for the easy and effective control of user input. Persistent. Though these packages have “XAF” or “ExpressApp” in their names, you do not need to pull XAF WinForms, WebForms, and Blazor dependencies in your projects. Dec 22, 2023 · The XAF Validation Module usually validates data when a user saves or deletes an object. BaseImpl. Apply this attribute to a business class’ Boolean public non-persistent property to define a rule that will be satisfied when this property returns true. Dec 28, 2023 · In this last post of 2023, I want to highlight a few Cross-Platform . Nov 24, 2015 · In order to use in-place validation after upgrading your existing ASP. See the following help topic for details: Declare Validation Rules. [a-z0-9_\\+-]+)*@[a-z0-9-]+(\\. Apply this attribute to a business class property to define a validation rule that will check whether this property’s value satisfies a specified condition. To use XAF Validation functionality, you need the DevExpress. The Validator class exposes a single DevExpress. Documentation about the module is pretty complete, but I'm going to link to the most important topics from this article and try to summarize various considerations about data validation in general. Save, Customer. Demands that an object of a particular type should satisfy a specified criteria. The following code snippets (auto-collected from DevExpress Examples) contain references to the Caption property. May 22, 2008 · The Validation module in XAF is probably one of the most important functional modules we offer, and with its flexibility comes complexity. OnDeleting method to implement validation logic. In desktop browsers, a validation message is displayed within a tooltip. Aug 21, 2014 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Demands that a Boolean type property should have a True value. ComponentModel; using System. Feb 14, 2024 · Developer documentation for all DevExpress products. In this instance, a validation rule is evaluated for all the collection elements rather than for the master object, ensuring that each collection element is valid. For additional information on how validation works in Blazor, refer to Microsoft documentation: Forms and validation. The sections below describe how to set up validation for DevExpress Blazor Editors. Grid validation is designed to improve usability. The Validation System offers a number of predefined rule types and contexts. ImageLoader classes. DXperience Subscription Save Hundreds – includes DevExpress UI Controls for WinForms, ASP. Localize Validation Messages. ShowMessage method. dll assembly, which is referenced by default: base classes and interfaces, common Validation Rules implementation and static validation services that are used to collect Validation Rules and check objects. The RuleValueComparison attribute demands that a particular IComparable property satisfies a specific expression. dll Jul 8, 2014 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. This property returns a RuleSet object representing all the Validation Rules declared in an application. Learn more about Reusable Modules This demo app is built using XAF Blazor and WinForms (powered by the EF Core ORM). In this instance, a Rule is checked when a specified Action is executed. This is required, so that the rule defined by this attribute is checked when the target property is not specified. In this topic, you will learn how to localize the validation messages that are shown to end-users when a rule is broken or the Validation Action is executed. Oct 29, 2024 · Validate Data Sent to Web API Endpoints. Accordingly, the links and snippets below may produce inaccurate results. Here, this rule is illustrated using the following six operators: Docs > API Reference > DevExpress. DataAnnotations; // public class Account : BaseObject { [RuleValueComparison("RuleRequiredField for Account . The demo includes reusable XAF modules such as Multi-Tenancy, Security System, Reports, Scheduler, Dashboards, Office, and many custom list and property editors for real-world scenarios (charts, pivot grids, maps, data grids with master-detail and layout views). This topic describes the API you can use to add information to XAF log files from your code. dll assembly. RuleObjectExistsAttribute Members Defines a validation rule that demands a particular type object that satisfies a specified criterion, exist in the database. In some scenarios, you may need to check whether a criterion is satisfied by the object or property before checking the rule. This topic provides a list of built-in XAF attributes and information on where and how you can apply these attributes. Jun 16, 2022 · How to: Implement a Custom Validation. . In the invoked Template Gallery, navigate to the XAF ASP. Jun 23, 2020 · XAF's Validation Module now displays error messages within the UI as follows: When an invalid value is entered and focus leaves the editor, XAF highlights the editor. The SkipNullOrEmptyValues behavior specified for a validation rule in code is set for the SkipNullOrEmptyValues property of the Application Model’s IModelRuleBase node. Menu XAF: Cross-Platform . (see our roadmap). We recommended that you implement validation on both the client and server for security reasons. Columns["UnitsInStock"]; GridColumn colUnitsOnOrder = view. Xpo, DevExpress. Document. This topic details the basic concepts of this tool. Provides access to the Validation Rules declared in an XAF application. , on different computers in parallel or when data is saved from several views within the same app . This example demonstrates how to check validation r XAF - How to Highlight Invalid Properties Immediately in an Invoked View | DevExpress Support Jun 19, 2024 · Refer to the following topic for details: FIPS-compliance changes to the DevExpress. Jun 19, 2024 · Text Notifications. In the demo examples we will use the Starship class that defines validation logic based on data annotations. XAF applications created with Solution Wizard version 17. This event is raised when checking the validation context before the target object type is checked. Developer documentation for all DevExpress products. - Use the "Save" Action to validate an object in the "Save" context. In most cases, RuleRequiredFieldAttribute is used when you need to ensure that a property has a value. TextFieldName — Specifies the data source's field used to supply item text. Aug 5, 2020 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. We recommend that you declare a default property with human-readable values because XAF displays them in the following UI elements: Detail View captions; The first column of List Views; Lookup List Views; Lookup Editors in an unexpanded state. NET (XPO) [RuleObjectExists("",DefaultContexts. Jun 19, 2024; 5 minutes to read; In XAF applications, you can display a message box with a detailed notification text using the ShowViewStrategyBase. XAF Modules")] public sealed class ValidationModule : ModuleBase Apr 21, 2020 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. NET (XPO) using DevExpress. When defining a rule for a business class or property, you should specify a context for checking this rule. This rule is not intended for checking the target property’s data, and therefore, this property should be non-persistent. The RuleCriteria and RuleRequiredField rules are demonstrated. Columns["UnitsOnOrder"]; double unitsInStock = Convert. For instance, validation, navigation, and search features are already included in the default UI. CreateObjectSpace method to create an Object Space. The XafApplication class contains methods to create Controllers, Views, Object Space (see BaseObjectSpace), and other XAF elements. Automatic Validation Using Masks. ToDouble(view. They are defined in the following table: Demands that the combination of particular property values should be unique. This class has been taken from the official documentation with only slight modifications. The Employee class should be inherited from the PermissionPolicyUser class to support the Security System. May 6, 2022 · Implement the Employee and Company Classes. A context defines the moment when the application checks the rule. Whether using WPF, ASP. Oct 29, 2024; 5 minutes to read; This topic shows how you can validate user input if you use DevExpress Web API Service for data access. Right-click the Templates folder and select the Add DevExpress Item | New Item… option from the context menu. The interface’s IRuleSource. NET App UI & Web API. Base. By default, end users have the ability to change their passwords and set simple or even empty passwords. [a-z0-9-]+)*\\. Utils. Save, ValueComparisonType. Oct 16, 2024 · Validation Contexts. Remarks. XAF is designed with a modular architecture and includes dozens of XAF components that can be reused in non-XAF apps. FocusedRowHandle, colUnitsInStock)); double unitsOnOrder = Convert The DevExpress Universal Subscription is required only if you need our technical support and additional paid services/benefits such as XAF's Admin Panel, audit trail, reports, localization, media files, validation, etc. Internally, these rules are automatically collected in the RuleSet. 2. Oct 29, 2020 · C#; private void gridView1_ValidateRow(object sender, DevExpress. Validation event to implement a custom validation. e. Nov 23, 2012 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Test Validation Rules. When new users view screenshots of these unique XAF Blazor features or try them live in our XAF Blazor demo, they often ask whether it is a WinForms app (or if they are familiar with XAF, they cannot believe how much XAF Blazor apps have progressed over the last Dec 23, 2024 · In the code above, the ErrorHandling is a class that is used to handle errors occurring in ASP. If you happen to be using DevExpress XAF then use a ValidationRule from the ValidationModule instead. XtraGrid. By default, validation rules are strict, i. Set Up a Validation Model In the code above, the RuleCriteriaAttribute has the RuleBaseAttribute. It passes all strings to the Trace. However, you can implement soft validation rules that can be ignored by uses. Dec 26, 2017 · Disclaimer: The information provided on DevExpress. This example demonstrates how to use attributes to set rules for business classes and their properties. v17. Set the rule’s custom validation context to “PreviewReport”. Important Notes WinForms, ASP. Otherwise, the validation rule does not work. XAF You can get started quickly with EF Core community (third-party) modules and ready-to-use built-in XAF modules such as Audit Trail, Validation, and Security System. Its properties specify application name and title, configuration string, provide access to the Application Model , modules and the strategy that manages View visibility. C# (EF Core) C# (XPO) VB. You can read about the Blazor forms and validation in the official documentation. Refer to the CustomMessageTemplate property description for more information on custom message templates. XAF also helps developers create multi-tenant or SaaS-ready apps with multiple databases using a few declarative lines of code instead of writing hundreds of lines of code. NET Core Blazor Templates section and select the Main Form Template item. Feb 24, 2022 · Apply a validation rule to a required property. LessThan, 100, CustomMessageTemplate = "The Remarks. Use them as base classes to implement a custom rule. The validation of report parameters should be performed when executing the Preview action. PasswordCryptographer and DevExpress. Jun 10, 2024 · Notifications Module Capabilities. NET, WinForms, HTML5 or Windows 10, DevExpress tools help you build and deliver your best in the shortest time possible. Apr 10, 2018 · The way this data is to be processed (the Domain Logic) is then defined by the creation of special classes that determine how interface members behave when an object is constructed, when properties are changed, etc. BeforeTransaction, MessageTemplateMustExist = "The objects that satisfy the '{Criteria}' criteria must not exist")] public class Department : BaseObject { public virtual string Nov 28, 2013 · These can be applied to your existing validation rules using code or the Model Editor. A threat actor can bypass validation and send malicious data to the server. Feb 2, 2024 · Great news for customers using Entity Framework Core (EF Core): XAF v23. Mar 19, 2015 · Finally, the XAF validation module cannot guarantee unique values in a scenario where the validation check and insert data actions are separate operations executed sequentially, e. ===== The XAF Team would love your feedback. Refer to the following interface description to see how to implement a custom Validation Rule Source: IRuleSource. 1 or higher use the RFC 2898 algorithm. ExpressApp. Validator. Feb 13, 2014 · Disclaimer: The information provided on DevExpress. All docs DevExpress. Validation event or the client-side ASPxClientEdit. Add the Company property, and make it a part of the “Company-Employees” association. The module contained in the DevExpress. By default, SkipNullOrEmptyValues is set to false in the RuleRequiredField rule; in the remaning validation rules, it is set to true. 2 Oct 3, 2013 · Disclaimer: The information provided on DevExpress. You can Apr 21, 2013 · Disclaimer: The information provided on DevExpress. - Use the "Validate" Action to validate an object in all available contexts. Mar 13, 2025 · Create a new Main Form Template. g. 1). This can be useful, for instance, to perform various checks when implementing ‘defensive programming’. ComponentModel. The DevExpress. 2, be certain to add this module from the Toolbox into the Application Designer. 4+ and associated Backend Web API Service include preview (CTP) support of EF Core 8. In other words, if you do not require XAF, you are not forced to use it. RegisteredRules property of the DevExpress. Sep 10, 2020; 2 minutes to read; eXpress Persistent Objects has no built-in validation logic. com and affiliated web properties (including the DevExpress Support Center) is provided "as is" without warranty of any kind. Validation > RuleSet > Methods > ValidateAllTargets > ValidateAllTargets(IObjectSpace, IEnumerable) All docs V 24. Feb 27, 2025 · To implement a new validation rule, inherit it from any XAF validation rule type listed in the table below. Nov 11, 2022 · Built-in validation rules can be applied to a collection property involved in a relationship (marked with the Association attribute). Jun 16, 2022; 3 minutes to read; You can handle the server-side ASPxEdit. Note The algorithm used to collect these code examples remains a work in progress. Validation. Failed validation result Developer documentation for all DevExpress products. Validate Password Complexity. To learn how to use it to provide data validation in your application, refer to the Declare Validation Rules topic. Property, AllowMultiple = true)] public class RuleUniqueValueAttribute : RuleBaseAttribute, IRuleUniqueValueProperties Aug 3, 2020 · This module also uses entities from the DevExpress. Feb 27, 2025 · XAF provides several built-in types of Validation Rules. To learn how to do this, refer to the Implement Custom Jan 16, 2025 · XAF includes a number of built-in Controllers that are used when generating the default UI. Mar 09, 2024; 4 minutes to read; The applications built using the XAF can be localized to the required language. Jun 03, 2020; 8 minutes to read; Input Validation allows you to reduce data entry errors and notify users of invalid input. 4+ to solicit feedback before official release in 4 months (EF Core 8 support will officially ship in v24. Processor, and other core libraries. Aug 4, 2016 · Disclaimer: The information provided on DevExpress. The algorithm used to collect these code examples remains a work in progress. Nov 5, 2024 · Business classes in your XAF application should have the default member. Masks let you specify the pattern for input values and users cannot enter text which is not Jul 10, 2012 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. EF; using DevExpress. v 24. Sep 16, 2014 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Mar 12, 2025 · DevExpress Blazor Editors support this standard data validation technique. ([a-z]{2,4})$"; . Actual business classes are automatically implemented by XAF at runtime, based on the logic and interfaces provided. Feb 14, 2024; 3 minutes to read; The EasyTest functional testing framework allows you to test validation rules. Text — Specifies the editor's text. This object’s methods allow you to perform validation in custom Contexts. ValidateRowEventArgs e) { GridView view = sender as GridView; GridColumn colUnitsInStock = view. Use the IObjectSpace. Win NuGet packages. This can be done either in code, or in the Model Editor. Save,"Office=205",InvertResult = true, CriteriaEvaluationBehavior = CriteriaEvaluationBehavior. To implement a custom feature, you will need to create a Controller – a class derived from the Controller, ViewController, or WindowController class. Oct 20, 2023 · To create a custom Validation Rule Source, define a class that implements the IRuleSource interface. Developer Express Inc disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. Apply this attribute to a business class string property to define a validation rule that will check whether this property’s value matches a specified regular expression. Core ComboBox API members are as follows: Data — Specifies the data source used to populates the editor's list items. Win. The following technologies enable data validation: XPO | EF Core These ORM tools allow you to define your Business Model together with validation attributes. A rule specifies a data validity condition. GetRowCellValue(view. NET, MVC, WPF, our award-winning reporting platform and These include DevExpress. NET Web Forms applications. Oct 10, 2014 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Jun 3, 2020 · Input Validation. RuleUniqueValueAttribute Methods Defines a validation rule that demands the target property’s value be unique. You can override the IXPObject. The ParametrizedAction class inherits the basic functionality of Actions from the ActionBase class. Standard Contexts: Action. RuleSet public property. Validation; [RuleCombinationOfPropertiesIsUnique("SampleRule Oct 15, 2012 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Tracing class is used for this purpose. Mar 19, 2024 · To avoid these problems, XAF provides a special Validation module. Required Field; Conform to Criteria; Must be in Range; Compare Value to Another; Test Value as String; Test Value with Regular Expression; Test with Boolean Property The DevExpress UI components support Blazor's form validation. Please tell us what you think of these new features. The Tracing class does not store log strings internally. If at least one rule is broken, the Controller cancels the Delete Action execution and raises a validation exception. EmailRegularExpression, CustomMessageTemplate = "Invalid email format!")] public String Email { get; set; } . This XAF requires that the properties decorated with the RuleRequiredFieldAttribute attribute must be of nullable or reference type. To learn more about validation and its rules, refer to the Contextual Validation Concepts topic in XAF documentation. Oct 16, 2024; 3 minutes to read; Validation Rules can be checked in the following Validation Contexts. Some of these types are abstract and represent a base for rules. RuleCriteriaProperties: Represent the RuleCriteria Validation Rules‘ properties exported to the Application Model. Views. We intentionally added support for EF Core 8 in v23. Blazor and DevExpress. The module tracks changes in any business object that supports the ISupportNotifications interface, such as Event objects that ship with the Built-in Business Class Library for Entity Framework Core and XPO. NET App UI (XAF)-related features we added or improved in 2023. Validation is based on rules declared in business class code and in the Validation node of the Application Model. NET [AttributeUsage(AttributeTargets. RuleFromBoolPropertyAttribute: Defines a validation rule that demands a true value for the target public non-persistent Boolean Sep 10, 2020 · Validate Objects. Amount", DefaultContexts. Mar 23, 2015 · Disclaimer: The information provided on DevExpress. Jun 26, 2024; 4 minutes to read; If you wish to customize an Action provided by XAF (or a third-party module), you should know which Controller provides this Action. DevExpress. RuleSet object. NET Core Blazor, and Web API applications can be built based on the same Business Model , business logic , and Controllers when all applications use the same set of modules. NET applications to v15. [RuleRegularExpression(DefaultContexts. This can be done either in code, or in the Model Editor (see Declare Validation Rules). NET Web Forms, ASP. Defines a validation rule that demands an object of the target type satisfy a specified criterion. OnSaving or IXPObject. NET functional tests for your XAF applications. You should not rely on grid input validation alone to secure your Blazor-powered app. Feb 20, 2025; 3 minutes to read; The ChangePasswordByUser Action is accessible by end users when the Standard Authentication type is used in an XAF application. Jan 16, 2025 · In this project, you can write C#/VB. XAF allows the use of Actions as Contexts. Validation; using System. To modify the behavior of an existing XAF rule, inherit your rule directly from this particular rule type. Set the handler’s NeedToValidateRule parameter to false to disable validation when required. The Controller checks all validation rules associated with the Delete validation context. Jun 21, 2013 · How to validate to email in Winform XAF? public const string EmailRegularExpression = "^[a-z0-9_\\+-]+(\\. - Use the "Validate In Custom Context" Action to validate an object in the custom "IsAllowedToExecuteAction" context. CreateRules method allows you to implement custom logic to instantiate Validation Rules. Feb 24, 2016 · For information on how to validate an object with XPO, see here. The report parameter validation should be performed when the Preview action is executed. Oct 1, 2013 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. If your business rule cannot be expressed via the Criteria Language syntax, then you can use the RuleFromBooleanProperty attribute and write any logic you want in code. CustomNeedToValidateRule event to turn validation on and off, depending on certain conditions. The DevExpress Blazor ComboBox allows users to select an item from a drop-down list. XAF uses the following validation concept. If at least one rule is broken, the Controller cancels the Save Action execution and raises a validation exception. Sep 15, 2018 · DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, Delphi, HTML5 or iOS & Android development. Dec 4, 2013 · A platform-agnostic validation engine is included, with a comprehensive number of predefined validation rules that can be combined and customized at runtime Mar 26, 2025 · You can handle the static RuleSet. Free DevExpress Products - Get Your Copy Today Universal SubscriptionOur Best Value – includes over 600 UI Controls, our award-winning reporting platform, DevExpress Dashboard, the eXpressApp Framework, CodeRush for Visual Studio and more. Jun 26, 2024 · Determine an Action's Controller and Identifier. qzl qof dkv rzd zpovb fcfq ejmt dczwj ohrz ttlnu rjai hwx mekwn swev uwimzx