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ValidationMessageObserver.OnValidationMessagesChanging Method

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Definition

Namespace:
Microsoft.VisualStudio.Modeling.Validation
Assembly:
Microsoft.VisualStudio.Modeling.Sdk.15.0.dll
Assembly:
Microsoft.VisualStudio.Modeling.Sdk.dll
Package:
Microsoft.VisualStudio.Modeling.Sdk v17.10.40171

Override to process a change to the message collection.

protected:
 virtual void OnValidationMessagesChanging(System::Collections::ObjectModel::ReadOnlyCollection<Microsoft::VisualStudio::Modeling::Validation::ValidationMessage ^> ^ messagesBeforeUpdate, System::Collections::ObjectModel::ReadOnlyCollection<Microsoft::VisualStudio::Modeling::Validation::ValidationMessage ^> ^ messagesRemoved, System::Collections::ObjectModel::ReadOnlyCollection<Microsoft::VisualStudio::Modeling::Validation::ValidationMessage ^> ^ messagesAdded, System::Collections::ObjectModel::ReadOnlyCollection<Microsoft::VisualStudio::Modeling::Validation::ValidationMessage ^> ^ messagesAfterUpdate);
protected virtual void OnValidationMessagesChanging (System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> messagesBeforeUpdate, System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> messagesRemoved, System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> messagesAdded, System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> messagesAfterUpdate);
abstract member OnValidationMessagesChanging : System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> * System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> * System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> * System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> -> unit
override this.OnValidationMessagesChanging : System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> * System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> * System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> * System.Collections.ObjectModel.ReadOnlyCollection<Microsoft.VisualStudio.Modeling.Validation.ValidationMessage> -> unit
Protected Overridable Sub OnValidationMessagesChanging (messagesBeforeUpdate As ReadOnlyCollection(Of ValidationMessage), messagesRemoved As ReadOnlyCollection(Of ValidationMessage), messagesAdded As ReadOnlyCollection(Of ValidationMessage), messagesAfterUpdate As ReadOnlyCollection(Of ValidationMessage))

Parameters

messagesBeforeUpdate
ReadOnlyCollection<ValidationMessage>
messagesRemoved
ReadOnlyCollection<ValidationMessage>
messagesAdded
ReadOnlyCollection<ValidationMessage>
messagesAfterUpdate
ReadOnlyCollection<ValidationMessage>

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

Applies to