DataErrorValidationRule Class
TOC
Collapse the table of content
Expand the table of content

DataErrorValidationRule Class

 

Represents a rule that checks for errors that are raised by the IDataErrorInfo implementation of the source object.

Namespace:   System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

System.Object
  System.Windows.Controls.ValidationRule
    System.Windows.Controls.DataErrorValidationRule

public sealed class DataErrorValidationRule : ValidationRule

NameDescription
System_CAPS_pubmethodDataErrorValidationRule()

Initializes a new instance of the DataErrorValidationRule class.

NameDescription
System_CAPS_pubpropertyValidatesOnTargetUpdated

Gets or sets a value that indicates whether the validation rule runs when the target of the Binding is updated. (Inherited from ValidationRule.)

System_CAPS_pubpropertyValidationStep

Gets or sets when the validation rule runs.(Inherited from ValidationRule.)

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethodValidate(Object, CultureInfo)

Performs validation checks on a value.(Overrides ValidationRule.Validate(Object, CultureInfo).)

System_CAPS_pubmethodValidate(Object, CultureInfo, BindingExpressionBase)

Performs validation checks on a value.(Inherited from ValidationRule.)

System_CAPS_pubmethodValidate(Object, CultureInfo, BindingGroup)

Performs validation checks on a value.(Inherited from ValidationRule.)

The WPF data binding model enables you to associate ValidationRules with a Binding object. If your source object implements the IDataErrorInfo interface, you can use the built-in rule DataErrorValidationRule to check for errors raised by the IDataErrorInfo implementation.

An alternative syntax to setting the DataErrorValidationRule explicitly is to set the ValidatesOnDataErrors property to true on your Binding or MultiBinding object.

You can create a custom rule by creating a class that derives from ValidationRule. For more information and a detailed discussion of data validation, see Data Binding Overview.

DataErrorValidationRule is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

.NET Framework
Available since 3.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top
Show:
© 2016 Microsoft