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ValidationMessageObserver.OnValidationMessagesChanging Method

Indicates that a list of validation messages is changing.

Namespace:  Microsoft.VisualStudio.Modeling.Validation
Assembly:  Microsoft.VisualStudio.Modeling.Sdk.10.0 (in Microsoft.VisualStudio.Modeling.Sdk.10.0.dll)

Syntax

'Declaração
Protected Overridable Sub OnValidationMessagesChanging ( _
    messagesBeforeUpdate As ReadOnlyCollection(Of ValidationMessage), _
    messagesRemoved As ReadOnlyCollection(Of ValidationMessage), _
    messagesAdded As ReadOnlyCollection(Of ValidationMessage), _
    messagesAfterUpdate As ReadOnlyCollection(Of ValidationMessage) _
)
protected virtual void OnValidationMessagesChanging(
    ReadOnlyCollection<ValidationMessage> messagesBeforeUpdate,
    ReadOnlyCollection<ValidationMessage> messagesRemoved,
    ReadOnlyCollection<ValidationMessage> messagesAdded,
    ReadOnlyCollection<ValidationMessage> messagesAfterUpdate
)
protected:
virtual void OnValidationMessagesChanging(
    ReadOnlyCollection<ValidationMessage^>^ messagesBeforeUpdate, 
    ReadOnlyCollection<ValidationMessage^>^ messagesRemoved, 
    ReadOnlyCollection<ValidationMessage^>^ messagesAdded, 
    ReadOnlyCollection<ValidationMessage^>^ messagesAfterUpdate
)
abstract OnValidationMessagesChanging : 
        messagesBeforeUpdate:ReadOnlyCollection<ValidationMessage> * 
        messagesRemoved:ReadOnlyCollection<ValidationMessage> * 
        messagesAdded:ReadOnlyCollection<ValidationMessage> * 
        messagesAfterUpdate:ReadOnlyCollection<ValidationMessage> -> unit 
override OnValidationMessagesChanging : 
        messagesBeforeUpdate:ReadOnlyCollection<ValidationMessage> * 
        messagesRemoved:ReadOnlyCollection<ValidationMessage> * 
        messagesAdded:ReadOnlyCollection<ValidationMessage> * 
        messagesAfterUpdate:ReadOnlyCollection<ValidationMessage> -> unit 
protected function OnValidationMessagesChanging(
    messagesBeforeUpdate : ReadOnlyCollection<ValidationMessage>, 
    messagesRemoved : ReadOnlyCollection<ValidationMessage>, 
    messagesAdded : ReadOnlyCollection<ValidationMessage>, 
    messagesAfterUpdate : ReadOnlyCollection<ValidationMessage>
)

Parameters

Remarks

methods are called in this order: 1. OnValidationMessagesChanging 2. OnValidationMessageRemoved - called once for each message removed. 3. OnValidationMessageAdded - called once for each message added. 4. OnValidationMessagesChangedSummary

.NET Framework Security

See Also

Reference

ValidationMessageObserver Class

Microsoft.VisualStudio.Modeling.Validation Namespace