Class ValidationSource

Executes data validations within an IValidatingViewModel.

Inheritance

object

ValidationSource

ValidationSource<T>

Implements

INotifyDataErrorInfo

Inherited Members

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 ValidationSource : INotifyDataErrorInfo

Properties

HasErrors

Gets a value that indicates whether the entity has validation errors.

Declaration

public bool HasErrors { get; }

Property Value

Type	Description
bool	true if the entity currently has validation errors; otherwise, false.

this[string]

Gets a collection of validation error messages for the specified property.

Declaration

public IEnumerable<string> this[string propertyName] { get; }

Parameters

Type	Name	Description
string	propertyName	Name of the property to retrieve error messages for.

Property Value

Type	Description
IEnumerable<string>	An enumeration of error messages for the specified property, or an empty enumeration if the property has no errors.

PassesValidation

Indicates whether the object under validation has passed all validation checks.

Declaration

public bool PassesValidation { get; }

Property Value

Type	Description
bool

Methods

CheckErrors()

Executes validation checks for all configured validation entries.

Declaration

public bool CheckErrors()

Returns

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

GetErrors()

Enumerates validation error messages for all configured properties of the observed ViewModel.

Declaration

public IEnumerable<string> GetErrors()

Returns

Type	Description
IEnumerable<string>	A collection with all validation error messages for the observed ViewModel.

GetErrors(string?)

Enumerates validation errors for the specified property or for all properties.

Declaration

public IEnumerable GetErrors(string? propertyName)

Parameters

Type	Name	Description
string	propertyName	Property name to get validation errors for. If null or empty, errors for all properties are returned.

Returns

Type	Description
IEnumerable	An enumeration with all validation errors for the property or the instance.

Events

ErrorsChanged

Occurs when the validation errors have changed for a property or for the entire entity.

Declaration

public event EventHandler<DataErrorsChangedEventArgs>? ErrorsChanged

Event Type

Type	Description
EventHandler<DataErrorsChangedEventArgs>

Implements

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)

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

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