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System.ComponentModel.DataAnnotations Namespace

.NET Framework 4.5

The System.ComponentModel.DataAnnotations namespace provides attribute classes that are used to define metadata for ASP.NET MVC and ASP.NET data controls.

  ClassDescription
Public classAssociatedMetadataTypeTypeDescriptionProviderExtends the metadata information for a class by adding attributes and property information that is defined in an associated class.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsAssociationAttributeSpecifies that an entity member represents a data relationship, such as a foreign key relationship.
Public classBindableTypeAttributeSpecifies whether a type is typically used for binding.
Public classCompareAttributeProvides an attribute that compares two properties.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsConcurrencyCheckAttributeSpecifies that a property participates in optimistic concurrency checks.
Public classCreditCardAttributeSpecifies that a data field value is a credit card number.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsCustomValidationAttributeSpecifies a custom validation method that is used to validate a property or class instance.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsDataTypeAttributeSpecifies the name of an additional type to associate with a data field.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsDisplayAttributeProvides a general-purpose attribute that lets you specify localizable strings for types and members of entity partial classes.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsDisplayColumnAttributeSpecifies the column that is displayed in the referred table as a foreign-key column.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsDisplayFormatAttributeSpecifies how data fields are displayed and formatted by ASP.NET Dynamic Data.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsEditableAttributeIndicates whether a data field is editable.
Public classEmailAddressAttributeValidates an email address.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsEnumDataTypeAttributeEnables a .NET Framework enumeration to be mapped to a data column.
Public classFileExtensionsAttributeValidates file name extensions.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsFilterUIHintAttributeRepresents an attribute that is used to specify the filtering behavior for a column.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsKeyAttributeDenotes one or more properties that uniquely identify an entity.
Public classMaxLengthAttributeSpecifies the maximum length of array or string data allowed in a property.
Public classMetadataTypeAttributeSpecifies the metadata class to associate with a data model class.
Public classMinLengthAttributeSpecifies the minimum length of array of string data allowed in a property.
Public classPhoneAttributeSpecifies that a data field value is a well-formed phone number using a regular expression for phone numbers.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsRangeAttributeSpecifies the numeric range constraints for the value of a data field.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsRegularExpressionAttributeSpecifies that a data field value in ASP.NET Dynamic Data must match the specified regular expression.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsRequiredAttributeSpecifies that a data field value is required.
Public classScaffoldColumnAttributeSpecifies whether a class or data column uses scaffolding.
Public classScaffoldTableAttributeSpecifies whether a class or data table uses scaffolding.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsStringLengthAttributeSpecifies the minimum and maximum length of characters that are allowed in a data field.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsTimestampAttributeSpecifies the data type of the column as a row version.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsUIHintAttributeSpecifies the template or user control that Dynamic Data uses to display a data field.
Public classUrlAttributeProvides URL validation.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsValidationAttributeServes as the base class for all validation attributes.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsValidationContextDescribes the context in which a validation check is performed.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsValidationExceptionRepresents the exception that occurs during validation of a data field when the ValidationAttribute class is used.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsValidationResultRepresents a container for the results of a validation request.
Public classSupported by Portable Class LibrarySupported in .NET for Windows Store appsValidatorDefines a helper class that can be used to validate objects, properties, and methods when it is included in their associated ValidationAttribute attributes.
  InterfaceDescription
Public interfaceIValidatableObjectProvides a way for an object to be invalidated.
  EnumerationDescription
Public enumerationSupported by Portable Class LibrarySupported in .NET for Windows Store appsDataTypeRepresents an enumeration of the data types associated with data fields and parameters.
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