RegularExpressionValidator.ValidationExpression Property

Reference

Definition

Namespace:: System.Web.UI.MobileControls

Assembly:: System.Web.Mobile.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets the regular expression assigned to be the validation criteria. The default value is an empty string (""). This API is obsolete. For information about how to develop ASP.NET mobile applications, see Mobile Apps & Sites with ASP.NET.

public:
 property System::String ^ ValidationExpression { System::String ^ get(); void set(System::String ^ value); };

[System.ComponentModel.Bindable(true)]
public string ValidationExpression { get; set; }

[<System.ComponentModel.Bindable(true)>]
member this.ValidationExpression : string with get, set

Public Property ValidationExpression As String

Property Value

String

The regular expression assigned to be the validation criteria.

The RegularExpressionValidator does not perform validation on an empty string. To test for an empty string, use the RequiredFieldValidator and RegularExpressionValidator controls together.

Attributes: BindableAttribute

Exceptions

HttpException

The regular expression assigned was malformed.

Remarks

The following table shows some sample validation expressions:

Type of Validation	Validation Expression
Email	\w+([-+.]\w+)@\w+([-.]\w+)\.\w+([-.]\w+)
Phone number	(( $\d 3$ ?)\|(\d{3}-))?\d{3}-\d{4}
URL	http://([\w-]+\.)+[\w-]+(/[\w-./?%&=]*)?

Applies to

Product	Versions
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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