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class System.ComponentModel.DataAnnotations.FileExtensionsAttribute
Assembly: System.ComponentModel.Annotations
Inheritance: object → Attribute → ValidationAttribute → DataTypeAttribute → FileExtensionsAttribute
Validates file name extensions.
Properties
public
string
Extensions
Gets or sets the file name extensions.
public
string
CustomDataType
Gets the name of custom field template that is associated with the data field.
public
DataType
DataType
Gets the type that is associated with the data field.
public
DisplayFormatAttribute
DisplayFormat
Gets a data-field display format.
public
string
ErrorMessage
Gets or sets an error message to associate with a validation control if validation fails.
public
string
ErrorMessageResourceName
Gets or sets the error message resource name to use in order to look up the <see cref="P:System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageResourceType" /> property value if validation fails.
public
Type
ErrorMessageResourceType
Gets or sets the resource type to use for error-message lookup if validation fails.
protected
string
ErrorMessageString
Gets the localized validation error message.
public
bool
RequiresValidationContext
Gets a value that indicates whether the attribute requires validation context.
public
object
TypeId
Methods
public
string
FormatErrorMessage(string name)
Applies formatting to an error message, based on the data field where the error occurred.
Returns The formatted error message.
name
The name of the field that caused the validation failure.
public
bool
IsValid(object value)
Checks that the specified file name extension or extensions is valid.
Returns <see langword="true" /> if the file name extension is valid; otherwise, <see langword="false" /> .
value
A comma delimited list of valid file extensions.
public
string
GetDataTypeName()
Inherited from DataTypeAttribute
Returns the name of the type that is associated with the data field.
Returns The name of the type associated with the data field.
public
ValidationResult
GetValidationResult(object value,
ValidationContext validationContext)
Inherited from ValidationAttribute
Checks whether the specified value is valid with respect to the current validation attribute.
Returns An instance of the <see cref="T:System.ComponentModel.DataAnnotations.ValidationResult" /> class.
value
The value to validate.
validationContext
The context information about the validation operation.
protected
ValidationResult
IsValid(object value,
ValidationContext validationContext)
Inherited from ValidationAttribute
Validates the specified value with respect to the current validation attribute.
Returns An instance of the <see cref="T:System.ComponentModel.DataAnnotations.ValidationResult" /> class.
value
The value to validate.
validationContext
The context information about the validation operation.
public
void
Validate(object value,
ValidationContext validationContext)
Inherited from ValidationAttribute
Validates the specified object.
value
The object to validate.
validationContext
The <see cref="T:System.ComponentModel.DataAnnotations.ValidationContext" /> object that describes the context where the validation checks are performed. This parameter cannot be <see langword="null" /> .
public
void
Validate(object value,
string name)
Inherited from ValidationAttribute
Validates the specified object.
value
The value of the object to validate.
name
The name to include in the error message.
protected
void
Finalize()
Inherited from object
protected
object
MemberwiseClone()
Inherited from object
public
string
ToString()
Inherited from object