Non-virtual interface pattern: Difference between revisions

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== C# Exampleexample ==

[[File:Non-virtual interface pattern.svg]]

<syntaxhighlight lang="c#" line="1">

public abstract class Saveable

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// The invariant processing for the method is defined in the non virtual interface.

// The behaviour so defined is inherited by all derived classes.

// For example, creating and committing a transaction.

public void Save()

{

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}

// VariantThe variant processing for the method is defined in the subclass interface.

// This behaviour can be customised as needed by subclasses.

// For example the specific implementation of saving data to the database.

protected abstract void CoreSave();

}

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protected override void CoreSave()

{

Console.WriteLine($"Saved customer {0Name} with credit limit {1Credit}", Name, Credit);

}

}