Class
ValidateViewModelBase

Provides basic implementation of the IAsyncDataErrorInfo interface.

Definition

Assembly:Telerik.WinUI.Controls.dll

Syntax:

cs-api-definition

public abstract class ValidateViewModelBase : ViewModelBase, INotifyPropertyChanged, IAsyncDataErrorInfo, INotifyDataErrorInfo

Inheritance: objectViewModelBaseValidateViewModelBase

Implements: IAsyncDataErrorInfoINotifyDataErrorInfoINotifyPropertyChanged

Inherited Members ViewModelBase.VerifyPropertyName(string)ViewModelBase.OnPropertyChanged(string)ViewModelBase.OnPropertyChanged<T>(Expression<Func<T>>)ViewModelBase.PropertyChangedOverride(string)ViewModelBase.PropertyChanged

Constructors

ValidateViewModelBase()

Declaration

cs-api-definition

protected ValidateViewModelBase()

Properties

HasErrors

Declaration

cs-api-definition

public bool HasErrors { get; }

Property Value

bool

Implements INotifyDataErrorInfo.HasErrors

Methods

AddError(string, object)

Adds error message to the specified property.

Declaration

cs-api-definition

protected virtual void AddError(string propertyName, object errorMessage)

Parameters

propertyName

string

Name of the property.

errorMessage

object

The error message.

GetErrors(string)

Declaration

cs-api-definition

public IEnumerable GetErrors(string propertyName)

Parameters

propertyName

string

Returns

IEnumerable

Implements INotifyDataErrorInfo.GetErrors(string)

OnErrorsChanged(string)

Raises the ErrorsChanged event.

Declaration

cs-api-definition

protected virtual void OnErrorsChanged(string propertyName)

Parameters

propertyName

string

Name of the property.

RemoveErrors(string)

Removes the errors for the specified property.

Declaration

cs-api-definition

protected virtual void RemoveErrors(string propertyName = null)

Parameters

propertyName

string

The name of the property to remove validation errors for; or null or Empty, to clear entity-level errors.

ValidateAsync(string)

Triggers validate logic asynchronously.

Declaration

cs-api-definition

public Task ValidateAsync(string propertyName)

Parameters

propertyName

string

The name of the property that needs validation.

Returns

Task

Implements IAsyncDataErrorInfo.ValidateAsync(string)

ValidateAsyncOverride(string)

Called by the method. Allows inheritors to provide custom validation logic.

Declaration

cs-api-definition

protected virtual Task ValidateAsyncOverride(string propertyName)

Parameters

propertyName

string

The name of the property that needs validation.

Returns

Task

Events

ErrorsChanged

Declaration

cs-api-definition

public event EventHandler<DataErrorsChangedEventArgs> ErrorsChanged

Event Value

EventHandler<DataErrorsChangedEventArgs>

Implements INotifyDataErrorInfo.ErrorsChanged

ClassValidateViewModelBase

Class
ValidateViewModelBase