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EnumDataTypeAttribute Class

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Specifies that an entity member corresponds to an enumeration type.

Inheritance Hierarchy

System.Object
  System.Attribute
    System.ComponentModel.DataAnnotations.ValidationAttribute
      System.ComponentModel.DataAnnotations.DataTypeAttribute
        System.ComponentModel.DataAnnotations.EnumDataTypeAttribute

Namespace:  System.ComponentModel.DataAnnotations
Assembly:  System.ComponentModel.DataAnnotations (in System.ComponentModel.DataAnnotations.dll)

Syntax

'Declaration
<AttributeUsageAttribute(AttributeTargets.Method Or AttributeTargets.Property Or AttributeTargets.Field Or AttributeTargets.Parameter, AllowMultiple := False)> _
Public NotInheritable Class EnumDataTypeAttribute _
    Inherits DataTypeAttribute
[AttributeUsageAttribute(AttributeTargets.Method|AttributeTargets.Property|AttributeTargets.Field|AttributeTargets.Parameter, AllowMultiple = false)]
public sealed class EnumDataTypeAttribute : DataTypeAttribute

The EnumDataTypeAttribute type exposes the following members.

Constructors

  Name Description
Public method EnumDataTypeAttribute Initializes a new instance of the EnumDataTypeAttribute class.

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Properties

  Name Description
Public property CustomDataType Gets a string that represents the name of the customized data type to associate with the member. (Inherited from DataTypeAttribute.)
Public property DataType Gets the type of the data object to associate with the member. (Inherited from DataTypeAttribute.)
Public property DisplayFormat Gets the object that represents the format of the data type. (Inherited from DataTypeAttribute.)
Public property EnumType Gets the enumeration type associated with the entity member.
Public property ErrorMessage Gets or sets the non-localizable error message to display when validation fails. (Inherited from ValidationAttribute.)
Public property ErrorMessageResourceName Gets or sets the property name on the resource type that provides the localizable error message. (Inherited from ValidationAttribute.)
Public property ErrorMessageResourceType Gets or sets the resource type that provides the localizable error message. (Inherited from ValidationAttribute.)
Protected property ErrorMessageString Gets the localized or non-localized error message. (Inherited from ValidationAttribute.)

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Methods

  Name Description
Public method Equals Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method FormatErrorMessage Applies formatting to the error message. (Inherited from ValidationAttribute.)
Public method GetDataTypeName Retrieves the name of the data type that is associated with the member. (Inherited from DataTypeAttribute.)
Public method GetHashCode Returns the hash code for this instance. (Inherited from Attribute.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method GetValidationResult Determines whether the specified object is valid and returns an object that includes the results of the validation check. (Inherited from ValidationAttribute.)
Protected method IsValid Determines whether the specified object is valid. (Inherited from ValidationAttribute.)
Public method Match When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Public method Validate Determines whether the specified object is valid and throws a ValidationException if the object is not valid. (Inherited from ValidationAttribute.)

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Remarks

You apply the EnumDataTypeAttribute attribute to a property when the property represents an enumeration type that is not available in the data source. For example, you may store a value as an integer in your database, but you want to associate that integer to an enumeration value in your application. When you apply the EnumDataTypeAttribute attribute to a property, you provide the type of the enumeration you want to associate with the property.

If the value of the property is nulla null reference (Nothing in Visual Basic) or an empty string (""), the value will not fail validation for the EnumDataTypeAttribute attribute. To validate that the value is not nulla null reference (Nothing in Visual Basic) or an empty string, use the RequiredAttribute attribute.

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.