RegularExpressionAttribute Class
Specifies that a data field value in ASP.NET Dynamic Data must match the specified regular expression.
System.Attribute
System.ComponentModel.DataAnnotations.ValidationAttribute
System.ComponentModel.DataAnnotations.RegularExpressionAttribute
Assembly: System.ComponentModel.DataAnnotations (in System.ComponentModel.DataAnnotations.dll)
The RegularExpressionAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | RegularExpressionAttribute | Initializes a new instance of the RegularExpressionAttribute class. |
| Name | Description | |
|---|---|---|
![]() | ErrorMessage | Gets or sets an error message to associate with a validation control if validation fails. (Inherited from ValidationAttribute.) |
![]() | ErrorMessageResourceName | Gets or sets the error message resource name to use in order to look up the ErrorMessageResourceType property value if validation fails. (Inherited from ValidationAttribute.) |
![]() | ErrorMessageResourceType | Gets or sets the resource type to use for error-message lookup if validation fails. (Inherited from ValidationAttribute.) |
![]() | ErrorMessageString | Gets the localized validation error message. (Inherited from ValidationAttribute.) |
![]() | Pattern | Gets the regular expression pattern. |
![]() | TypeId | When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.) |
| Name | Description | |
|---|---|---|
![]() | Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | FormatErrorMessage | Formats the error message to display if the regular expression validation fails. (Overrides ValidationAttribute.FormatErrorMessage(String).) |
![]() | GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | GetValidationResult | Checks whether the specified value is valid with respect to the current validation attribute. (Inherited from ValidationAttribute.) |
![]() | IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
![]() | IsValid(Object) | Checks whether the value entered by the user matches the regular expression pattern. (Overrides ValidationAttribute.IsValid(Object).) |
![]() | IsValid(Object, ValidationContext) | Validates the specified value with respect to the current validation attribute. (Inherited from ValidationAttribute.) |
![]() | Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
![]() | Validate(Object, ValidationContext) | Validates the specified object. (Inherited from ValidationAttribute.) |
![]() | Validate(Object, String) | Validates the specified object. (Inherited from ValidationAttribute.) |
| Name | Description | |
|---|---|---|
![]() ![]() | _Attribute.GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) |
![]() ![]() | _Attribute.GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) |
![]() ![]() | _Attribute.GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) |
![]() ![]() | _Attribute.Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) |
When you apply this attribute to a data field, you must follow the guidelines for the use of the validation attributes. For more information, see ASP.NET Dynamic Data Guidelines.
The following example shows how to use the RegularExpressionAttribute attribute to validate the FirstName and LastName data fields. The regular expression allows up to 40 uppercase and lowercase characters. The example performs the following tasks:
Implements a metadata partial class and the associated metadata class.
In the associated metadata class, applies the RegularExpressionAttribute attribute to the FirstName and LastName data fields, specifying the pattern and custom error messages.
using System; using System.Web.DynamicData; using System.ComponentModel.DataAnnotations; [MetadataType(typeof(CustomerMetaData))] public partial class Customer { } public class CustomerMetaData { // Allow up to 40 uppercase and lowercase // characters. Use custom error. [RegularExpression(@"^[a-zA-Z''-'\s]{1,40}$", ErrorMessage = "Characters are not allowed.")] public object FirstName; // Allow up to 40 uppercase and lowercase // characters. Use standard error. [RegularExpression(@"^[a-zA-Z''-'\s]{1,40}$")] public object LastName; }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
