Class FormViewModelBase

Clase base que permite definir un ViewModel que provee de servicios de formulario y validación de datos.

Inheritance

object

NotifyPropertyChangeBase

NotifyPropertyChanged

ViewModelBase

FormViewModelBase

Implements

INotifyPropertyChangeBase

IRefreshable

INotifyPropertyChanged

INotifyDataErrorInfo

Inherited Members

ViewModelBase.IsBusy

ViewModelBase.Observe<T>(Expression<Func<T>>, Action)

ViewModelBase.Observe(Expression<Func<object>>[], Action)

ViewModelBase.Observe(string, Action)

ViewModelBase.Observe(string[], Action)

ViewModelBase.ObserveFrom<T>(T, Expression<Func<T, object>>, Action)

ViewModelBase.ObserveFrom(INotifyPropertyChanged, PropertyInfo, Action)

ViewModelBase.BusyOp(Action)

ViewModelBase.BusyOp(Task)

ViewModelBase.BusyOp<T>(Func<T>)

ViewModelBase.BusyOp<T>(Task<T>)

NotifyPropertyChanged.PropertyChanged

NotifyPropertyChanged.Notify(params string[])

NotifyPropertyChanged.Notify(string)

NotifyPropertyChanged.RaisePropertyChangeEvent(in string, in PropertyChangeNotificationType)

NotifyPropertyChangeBase.OnInitialize(NotifyPropertyChangeBase.IPropertyBroadcastSetup)

NotifyPropertyChangeBase.Refresh()

NotifyPropertyChangeBase.Subscribe(PropertyInfo, PropertyChangeObserver)

NotifyPropertyChangeBase.Subscribe(PropertyChangeObserver)

NotifyPropertyChangeBase.Subscribe(Expression<Func<object>>, PropertyChangeObserver)

NotifyPropertyChangeBase.Unsubscribe(PropertyChangeObserver)

NotifyPropertyChangeBase.Unsubscribe(PropertyInfo)

NotifyPropertyChangeBase.Unsubscribe(Expression<Func<object>>)

NotifyPropertyChangeBase.Change<T>(ref T, T, string)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: TheXDS.MCART.Types.Base

Assembly: MCART.Mvvm.dll

Syntax

public abstract class FormViewModelBase : ViewModelBase, INotifyPropertyChangeBase, IRefreshable, INotifyPropertyChanged, INotifyDataErrorInfo

Properties

ErrorSource

Returns this instance, required for proper INotifyPropertyChanged implementation.

Declaration

public INotifyDataErrorInfo ErrorSource { get; }

Property Value

Type	Description
INotifyDataErrorInfo

HasErrors

Gets a value indicating whether this instance has any validation errors.

Declaration

public bool HasErrors { get; }

Property Value

Type	Description
bool

Methods

CheckErrors()

Checks for validation errors.

Declaration

public bool CheckErrors()

Returns

Type	Description
bool	true if all validations passed, false otherwise.

GetErrors(string?)

Enumerates the errors for the provided property name, or for all properties if propertyName is null.

Declaration

public IEnumerable GetErrors(string? propertyName)

Parameters

Type	Name	Description
string	propertyName	Name of the property for which to get the errors. If it is an empty string or null, this method will return all validation errors.

Returns

Type	Description
IEnumerable	An enumeration of all validation errors for the specified property or for all properties.

OnDoChange<T>(ref T, T, string)

Reemplaza el método Change<T>(ref T, T, string), permitiendo la ejecución de validaciones sobre una propiedad.

Declaration

protected override void OnDoChange<T>(ref T backingStore, T value, string propertyName)

Parameters

Type	Name	Description
T	backingStore	Field that holds the property value.
T	value	Value to be set.
string	propertyName	Name of the property. This parameter should be omitted always, unless you need to specify a different property to be notified.

Type Parameters

Name	Description
T	Type of backing field.

Overrides

NotifyPropertyChanged.OnDoChange<T>(ref T, T, string)

RegisterValidation<T>(Expression<Func<T>>)

Registers a property validation ruleset.

Declaration

protected FormViewModelBase.IValidationEntry<T> RegisterValidation<T>(Expression<Func<T>> propertySelector)

Parameters

Type	Name	Description
Expression<Func<T>>	propertySelector	Expression that selects the property to be configured.

Returns

Type	Description
FormViewModelBase.IValidationEntry<T>	An object which allows the configuration of the validation rules to be applied to the selected property.

Type Parameters

Name	Description
T	Property type.

ValidationAffects(params SimpleCommand[])

Tells to the validation engine that validation will affect the specified commands.

Declaration

protected void ValidationAffects(params SimpleCommand[] commands)

Parameters

Type	Name	Description
SimpleCommand[]	commands	Collection of commands to be affected by validation failures.

Remarks

Please call this method after instancing the commands.

Events

ErrorsChanged

Triggered whenever validations are run.

Declaration

public event EventHandler<DataErrorsChangedEventArgs>? ErrorsChanged

Event Type

Type	Description
EventHandler<DataErrorsChangedEventArgs>

Implements

INotifyPropertyChangeBase

IRefreshable

INotifyPropertyChanged

INotifyDataErrorInfo

Extension Methods

Objects.ShallowCopyTo(object, object, Type)

ObjectExtensions.FieldsOf<T>(object)

ObjectExtensions.GetAttribute<T>(object)

ObjectExtensions.GetAttributes<T>(object)

ObjectExtensions.HasAttrValue<TAttribute, TValue>(object, out TValue)

ObjectExtensions.HasAttribute<T>(object)

ObjectExtensions.HasAttribute<T>(object, out T?)

ObjectExtensions.HasAttributes<T>(object, out IEnumerable<T>?)

ObjectExtensions.Is(object?, object?)

ObjectExtensions.IsEither(object, IEnumerable)

ObjectExtensions.IsEither(object, params object[])

ObjectExtensions.IsNeither(object, IEnumerable)

ObjectExtensions.IsNeither(object, params object[])

ObjectExtensions.IsNot(object?, object?)

ObjectExtensions.PropertiesOf<T>(object)

ObjectExtensions.WhichAre(object, IEnumerable<object>)

ObjectExtensions.WhichAre(object, params object[])

Common.IfNotNull<T>(T?, Action<T>)

Objects.Itself<T>(T)

Objects.ShallowCopyTo<T>(T, T)

ObservingCommandBuilder.Create<T>(T, Action)

ObservingCommandBuilder.Create<T>(T, Action<object?>)

ObservingCommandBuilder.Create<T>(T, Func<object?, Task>)

ObservingCommandBuilder.Create<T>(T, Func<Task>)

CollectionExtensions.PushInto<TItem, TCollection>(TItem, ICollection<TCollection>)

DictionaryExtensions.PushInto<TKey, TValue>(TValue, TKey, IDictionary<TKey, TValue>)

NotifyPropertyChangeBaseExtensions.Subscribe<T>(T, Expression<Func<T, object?>>, PropertyChangeObserver)

NotifyPropertyChangeBaseExtensions.Unsubscribe<T>(T, Expression<Func<T, object?>>)