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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)

Inheritance Hierarchy
SystemObject
   System.Windows.ControlsValidationRule
    System.Windows.ControlsDataErrorValidationRule

Syntax
public sealed class DataErrorValidationRule : ValidationRule
public ref class DataErrorValidationRule sealed : ValidationRule
[<Sealed>]
type DataErrorValidationRule = 
    class
        inherit ValidationRule
    end
Public NotInheritable Class DataErrorValidationRule
	Inherits ValidationRule
Constructors
NameDescription
System_CAPS_pubmethod DataErrorValidationRule

Initializes a new instance of the DataErrorValidationRule class.

Properties
NameDescription
System_CAPS_pubproperty

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_pubproperty

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

Methods
NameDescription
System_CAPS_pubmethod Equals

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

System_CAPS_pubmethod GetHashCode

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

System_CAPS_pubmethod GetType

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

System_CAPS_pubmethod ToString

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

System_CAPS_pubmethod Validate

Performs validation checks on a value.(Overrides ValidationRuleValidate.)

System_CAPS_pubmethod Validate

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

System_CAPS_pubmethod Validate

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

Remarks

The WPF data binding model enables you to associate 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 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.

Version Information
.NET Framework
Available since 3.0
Thread Safety

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

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