# TelephoneValidationRule

Namespace: **Wisej.Web**

Assembly: **Wisej.Framework** (4.0.0.0)

* [ValidationRule](/api/wisej.web/extenders/validation/wisej.web.validationrule.md)
  * [TelephoneValidationRule](/api/wisej.web/extenders/validation/wisej.web.telephonevalidationrule.md)

Validates telephone numbers.

{% tabs %}
{% tab title="C#" %}

```csharp
public class TelephoneValidationRule : ValidationRule
```

{% endtab %}

{% tab title="VB.NET" %}

```visual-basic
Public Class TelephoneValidationRule
    Inherits ValidationRule
```

{% endtab %}
{% endtabs %}

## Constructors

### ![](/files/hsR4ok3152WyAf8J2C1u) TelephoneValidationRule()

Initializes a new instance of the [TelephoneValidationRule](/api/wisej.web/extenders/validation/wisej.web.telephonevalidationrule.md) class.

## Properties

### ![](/files/hsR4ok3152WyAf8J2C1u) Format

[Boolean](https://docs.microsoft.com/dotnet/api/system.boolean): Returns or sets whether to format the value of the control after validation. (Default: `False`)

### ![](/files/hsR4ok3152WyAf8J2C1u) Mask

[String](https://docs.microsoft.com/dotnet/api/system.string): Returns or sets the character mask used to validate the telephone number. It is based on the [MaskedTextProvider](#maskedtextprovider) implementation. (Default: `""`)

### ![](/files/hsR4ok3152WyAf8J2C1u) MaskedTextProvider

[MaskedTextProvider](https://docs.microsoft.com/dotnet/api/system.componentmodel.maskedtextprovider): Returns the [MaskedTextProvider](#maskedtextprovider) used to validate the control's text.

### ![](/files/hsR4ok3152WyAf8J2C1u) Name

[String](https://docs.microsoft.com/dotnet/api/system.string): Returns or sets the name of the validation rule. (Default: `"Telephone"`)

### ![](/files/hsR4ok3152WyAf8J2C1u) Required

[Boolean](https://docs.microsoft.com/dotnet/api/system.boolean): Returns or sets whether the control can be empty or its required to have a value. (Default: `False`)

## Methods

### ![](/files/hsR4ok3152WyAf8J2C1u) OnValidated(control)

Invoked after the control has been successfully validated.

| Parameter   | Type                                         | Description |
| ----------- | -------------------------------------------- | ----------- |
| **control** | [Control](/api/wisej.web/general/control.md) |             |

### ![](/files/hsR4ok3152WyAf8J2C1u) OnValidating(control)

Validates the *control* using the validation rule.

| Parameter   | Type                                         | Description |
| ----------- | -------------------------------------------- | ----------- |
| **control** | [Control](/api/wisej.web/general/control.md) |             |

**Returns:** [Boolean](https://docs.microsoft.com/dotnet/api/system.boolean). true if the validation is successful; otherwise false.


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