DataTypeAttribute Class
Specifies the name of an additional type to associate with an entity member.
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)
The DataTypeAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | DataTypeAttribute(DataType) | Initializes a new instance of the DataTypeAttribute class with the specified data type enumeration. |
![]() | DataTypeAttribute(String) | Initializes a new instance of the DataTypeAttribute class with the specified name of a customized data type. |
| Name | Description | |
|---|---|---|
![]() | CustomDataType | Gets a string that represents the name of the customized data type to associate with the member. |
![]() | DataType | Gets the type of the data object to associate with the member. |
![]() | DisplayFormat | Gets the object that represents the format of the data type. |
![]() | ErrorMessage | Gets or sets the non-localizable error message to display when validation fails. (Inherited from ValidationAttribute.) |
![]() | ErrorMessageResourceName | Gets or sets the property name on the resource type that provides the localizable error message. (Inherited from ValidationAttribute.) |
![]() | ErrorMessageResourceType | Gets or sets the resource type that provides the localizable error message. (Inherited from ValidationAttribute.) |
![]() | ErrorMessageString | Gets the localized or non-localized error message. (Inherited from ValidationAttribute.) |
| 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 the Object is reclaimed by garbage collection. (Inherited from Object.) |
![]() | FormatErrorMessage | Applies formatting to the error message. (Inherited from ValidationAttribute.) |
![]() | GetDataTypeName | Retrieves the name of the data type that is associated with the member. |
![]() | GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | GetValidationResult | Determines whether the specified object is valid and returns an object that includes the results of the validation check. (Inherited from ValidationAttribute.) |
![]() | IsValid | Determines whether the specified object is valid. (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 | Determines whether the specified object is valid and throws a ValidationException if the object is not valid. (Inherited from ValidationAttribute.) |
You use the DataType enumeration when you apply the DataTypeAttribute attribute to a property. The DataType enumeration contains valid values you use with the DataTypeAttribute attribute. You use the DataTypeAttribute attribute to specify the type of data that is expected for the property beyond the data type of the property. For example, properties named Phone and EmailAddress may both contain string values, but you can specify the expected values by applying the DataTypeAttribute attribute with the PhoneNumber and EmailAddress values respectively.
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