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On this page
  • Constructors
  • Validation()
  • Validation(containerControl)
  • Validation(container)
  • Properties
  • ContainerControl
  • DataMember
  • DataSource
  • ErrorProvider
  • Tag
  • Methods
  • BindToDataAndErrors(dataSource, dataMember)
  • CanExtend(extendee)
  • Clear()
  • GetValidationRules(control)
  • OnValidated(e)
  • OnValidating(e)
  • ResetValidationRules(control)
  • SetValidationRules(control, rules)
  • UpdateBinding()
  • Events
  • Validated
  • Validating

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  1. Wisej.Web
  2. Extenders

Validation

Wisej.Web.Validation

Last updated 4 months ago

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Namespace: Wisej.Web

Assembly: Wisej.Framework (4.0.0.0)

Adds a common validation system to any Control.

public class Validation : Component, IExtenderProvider
Public Class Validation
    Inherits Component
    Implements IExtenderProvider

You can drop this extender on any design surface to add validation rules to any control at design time using the added ValidationRules property. You can also use this component at runtime and invoke the SetValidationRules method directly. Validation rules are executed in the order they are added to the array. When a validation rule fails validation, the next rules are NOT executed and the Cancel property of the control's Validating event is set to true.

Constructors

Validation()

Initializes a new instance of the Validation class.

Validation(containerControl)

Initializes a new instance of the Validation class attached to a ContainerControl.

Name
Type
Description

containerControl

Validation(container)

Initializes a new instance of the Validation class attached to a IContainer implementation.

Name
Type
Description

container

Properties

ContainerControl: Returns or sets the container ContainerControlthat provides the BindingContext for binding to the IDataErrorInfo interface implemented by a DataSource. (Default: null)

String: Returns or sets the list within a data source to monitor for errors. (Default: "")

Object: Returns or sets the data source that the Validation extender monitors for errors. (Default: null)

IErrorProvider: Associates an IErrorProvider to the Validation extender."/> (Default: null)

When this property is null (default), the validation extender sets the InvalidMessage property of the control being validated to the corresponding InvalidMessage when a validation rule fails. Otherwise it invokes the SetError method passing the control that failed validation and the corresponding InvalidMessage string. You may use an instance of ErrorProvider to display error icons and messages. But you can also implement the IErrorProvider interface in a custom class and manage errors however required by the application. A third option is to assign a Label (or any Control that implements IErrorProvider) to the ErrorProvider property to let the validation extender set the text property to the corresponding InvalidMessage string.

The Label (or any Control that implements IErrorProvider) is automatically hidden (Visible is set to false) when there is no error message to display.

Object: Returns or sets the object that contains programmer-supplied data associated with the Validation extender. (Default: null)

Methods

Sets the DataSource and DataMember properties.

Parameter
Type
Description

dataSource

dataMember

A collection within the dataSource to monitor for errors.

Returns a value indicating whether a control can be extended.

Parameter
Type
Description

extendee

The control to be extended.

Returns: Boolean. true if the control can be extended; otherwise, false.

Removes all validation rules.

Returns the collection of ValidationRule associated with the specified control .

Parameter
Type
Description

control

Control associated with the validation rules to retrieve.

Returns: ValidationRule[]. Array of the validation rules associated to the control .

Fires the Validated event.

Parameter
Type
Description

e

Fires the Validating event.

Parameter
Type
Description

e

Removes all the validation rules from the control .

Parameter
Type
Description

control

Sets the list of validation rules associated with the specified control .

Parameter
Type
Description

control

Control associated with the validation rules.

rules

List of validation rules to enforce on the specified control .

Updated the bindings.

Events

ValidationEventHandler Fired after any control associated to the Validation extender has been successfully validated.

You can add an handler to this event and handle the successful validation of all the controls that have a set of validation rules in one place.

ValidationEventHandler Fired when the any control associated to the Validation extender is being validated.

You can add an handler to this event and handle the validation of all the controls that have a set of validation rules in one place.

The to monitor for errors.

An that represents the container of the extender.

ContainerControl

DataMember

DataSource

ErrorProvider

Tag

BindToDataAndErrors(dataSource, dataMember)

A data set based on the interface to be monitored for errors.

CanExtend(extendee)

Clear()

GetValidationRules(control)

OnValidated(e)

OnValidating(e)

ResetValidationRules(control)

Control to remove from the extender.

SetValidationRules(control, rules)

UpdateBinding()

Validated

Validating

ContainerControl
ContainerControl
IContainer
IContainer
Validation
Object
IList
String
Object
Control
ValidationEventArgs
ValidationEventArgs
Control
Validation
Control
ValidationRule[]