ValidationMessageObserver Class

Article
11/24/2013

Reports errors, messages, and warnings that are generated from validation methods.

Inheritance Hierarchy

System.Object
  Microsoft.VisualStudio.Modeling.Validation.ValidationMessageObserver
    Microsoft.VisualStudio.Modeling.DslDefinition.DslDefinitionModelSerializationHelperBase.SerializationValidationObserver
    Microsoft.VisualStudio.Modeling.Shell.ErrorListObserver

Namespace: Microsoft.VisualStudio.Modeling.Validation
Assembly: Microsoft.VisualStudio.Modeling.Sdk.12.0 (in Microsoft.VisualStudio.Modeling.Sdk.12.0.dll)

Syntax

'Declaration
Public MustInherit Class ValidationMessageObserver

public abstract class ValidationMessageObserver

public ref class ValidationMessageObserver abstract

[<AbstractClass>]
type ValidationMessageObserver =  class end

public abstract class ValidationMessageObserver

The ValidationMessageObserver type exposes the following members.

Constructors

	Name	Description
	ValidationMessageObserver	Initializes a new instance of the ValidationMessageObserver class.

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Methods

	Name	Description
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnValidationBeginning	Indicates that validation is about to begin.
	OnValidationEnded	Indicates that validation has ended.
	OnValidationMessageAdded	Indicates that a validation message has been added.
	OnValidationMessageRemoved	Indicates that a message has been removed.
	OnValidationMessagesChangedSummary	Indicates that the list of validation messages has changed.
	OnValidationMessagesChanging	Indicates that a list of validation messages is changing.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

This abstract class provides methods that occur at events during the validation process, such as OnValidationBeginning and OnValidationEnded.

If you use these methods, a derived class can perform one or more actions at one or more events during the validation process. Examples of these events include when validation starts or ends.

After all the validation methods have been invoked, the user receives the messages that were added or removed during the validation process.

The methods are called in the following order:

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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