ValidationMessageObserver::OnValidationMessagesChanging Method (ReadOnlyCollection<ValidationMessage^>^, ReadOnlyCollection<ValidationMessage^>^, ReadOnlyCollection<ValidationMessage^>^, ReadOnlyCollection<ValidationMessage^>^)
Visual Studio 2015
Indicates that a list of validation messages is changing.
Assembly: Microsoft.VisualStudio.Modeling.Sdk.12.0 (in Microsoft.VisualStudio.Modeling.Sdk.12.0.dll)
protected: virtual void OnValidationMessagesChanging( ReadOnlyCollection<ValidationMessage^>^ messagesBeforeUpdate, ReadOnlyCollection<ValidationMessage^>^ messagesRemoved, ReadOnlyCollection<ValidationMessage^>^ messagesAdded, ReadOnlyCollection<ValidationMessage^>^ messagesAfterUpdate )
Parameters
- messagesBeforeUpdate
-
Type:
System.Collections.ObjectModel::ReadOnlyCollection<ValidationMessage^>^
The ValidationMessage objects before the update occurred.
- messagesRemoved
-
Type:
System.Collections.ObjectModel::ReadOnlyCollection<ValidationMessage^>^
The ValidationMessage objects that were removed.
- messagesAdded
-
Type:
System.Collections.ObjectModel::ReadOnlyCollection<ValidationMessage^>^
The ValidationMessage objects that were added.
- messagesAfterUpdate
-
Type:
System.Collections.ObjectModel::ReadOnlyCollection<ValidationMessage^>^
The ValidationMessage objects after the update occurred.
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
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