RegularExpressionAttribute(String) Constructor
Definition
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.
Initializes a new instance of the RegularExpressionAttribute class.
public:
RegularExpressionAttribute(System::String ^ pattern);public RegularExpressionAttribute (string pattern);new System.ComponentModel.DataAnnotations.RegularExpressionAttribute : string -> System.ComponentModel.DataAnnotations.RegularExpressionAttributePublic Sub New (pattern As String)Parameters
- pattern
- String
The regular expression that is used to validate the data field value.
Exceptions
pattern is null.
Examples
The following example shows how to apply the RegularExpressionAttribute to a data field. If validation fails, the code in the example displays the validation error message that is provided by Dynamic Data.
// Allow up to 40 uppercase and lowercase
// characters. Use standard error.
[RegularExpression(@"^[a-zA-Z''-'\s]{1,40}$")]
public object LastName;
' Allow up to 40 uppercase and lowercase
' characters. Use standard error.
<RegularExpression("^[a-zA-Z''-'\s]{1,40}$")> _
Public LastName As Object
Applies to
Collaborer avec nous sur GitHub
La source de ce contenu se trouve sur GitHub, où vous pouvez également créer et examiner les problèmes et les demandes de tirage. Pour plus d’informations, consultez notre guide du contributeur.
