Microsoft.AspNetCore.Components.Forms Adds Data Annotations validation support to an . Holds metadata related to a data editing process, such as flags to indicate which fields have been modified and the current set of validation messages. Constructs an instance of . The model object for the . This object should hold the data being edited, for example as a set of properties. An event that is raised when a field value changes. An event that is raised when validation is requested. An event that is raised when validation state has changed. Supplies a corresponding to a specified field name on this 's . The name of the editable field. A corresponding to a specified field name on this 's . Gets the model object for this . Gets a collection of arbitrary properties associated with this instance. Gets whether field identifiers should be generated for <input> elements. Signals that the value for the specified field has changed. Identifies the field whose value has been changed. Signals that some aspect of validation state has changed. Clears any modification flag that may be tracked for the specified field. Identifies the field whose modification flag (if any) should be cleared. Clears all modification flags within this . Determines whether any of the fields in this have been modified. True if any of the fields in this have been modified; otherwise false. Gets the current validation messages across all fields. This method does not perform validation itself. It only returns messages determined by previous validation actions. The current validation messages. Gets the current validation messages for the specified field. This method does not perform validation itself. It only returns messages determined by previous validation actions. Identifies the field whose current validation messages should be returned. The current validation messages for the specified field. Gets the current validation messages for the specified field. This method does not perform validation itself. It only returns messages determined by previous validation actions. Identifies the field whose current validation messages should be returned. The current validation messages for the specified field. Determines whether the specified fields in this has been modified. True if the field has been modified; otherwise false. Determines whether the specified fields in this has been modified. Identifies the field whose current validation messages should be returned. True if the field has been modified; otherwise false. Determines whether the specified fields in this has no associated validation messages. True if the field has no associated validation messages after validation; otherwise false. Determines whether the specified fields in this has no associated validation messages. Identifies the field whose current validation messages should be returned. True if the field has no associated validation messages after validation; otherwise false. Validates this . True if there are no validation messages after validation; otherwise false. Extension methods to add DataAnnotations validation to an . Adds DataAnnotations validation support to the . The . Enables DataAnnotations validation support for the . The . A disposable object whose disposal will remove DataAnnotations validation support from the . Enables DataAnnotations validation support for the . The . The to be used in the . A disposable object whose disposal will remove DataAnnotations validation support from the . Holds arbitrary key/value pairs associated with an . This can be used to track additional metadata for application-specific purposes. Gets or sets a value in the collection. The key under which the value is stored. The stored value. Gets the value associated with the specified key, if any. The key under which the value is stored. The value, if present. True if the value was present, otherwise false. Removes the specified entry from the collection. The key of the entry to be removed. True if the value was present, otherwise false. Provides information about the event. Creates a new instance of . The Identifies the field whose value has changed. Uniquely identifies a single field that can be edited. This may correspond to a property on a model object, or can be any other named value. Initializes a new instance of the structure. An expression that identifies an object member. The field . Initializes a new instance of the structure. The object that owns the field. The name of the editable field. Gets the object that owns the editable field. Gets the name of the editable field. Holds validation messages for an . Creates an instance of . The with which this store should be associated. Adds a validation message for the specified field. The identifier for the field. The validation message. Adds a validation message for the specified field. Identifies the field for which to add the message. The validation message. Adds the messages from the specified collection for the specified field. The identifier for the field. The validation messages to be added. Adds the messages from the specified collection for the specified field. Identifies the field for which to add the messages. The validation messages to be added. Gets the validation messages within this for the specified field. To get the validation messages across all validation message stores, use instead The identifier for the field. The validation messages for the specified field within this . Gets the validation messages within this for the specified field. To get the validation messages across all validation message stores, use instead The identifier for the field. The validation messages for the specified field within this . Removes all messages within this . Removes all messages within this for the specified field. Identifies the field for which to remove the messages. Removes all messages within this for the specified field. The identifier for the field. Provides information about the event. Gets a shared empty instance of . Creates a new instance of . Provides information about the event. Gets a shared empty instance of . Creates a new instance of Gets a value that determines if OnDeltaApplied is subscribed to. MetadataUpdateHandler event. This is invoked by the hot reload host via reflection.