Class MethodInfoDecoratorExtensions

Namespace: Cuemon.Reflection

Assembly: Cuemon.Core.dll

Extension methods for the MethodInfo class hidden behind the IDecorator<T> interface.

public static class MethodInfoDecoratorExtensions

Inheritance: object

MethodInfoDecoratorExtensions

Examples

MethodInfoDecoratorExtensions provides extension methods on Decorator.Enclose for detecting whether a reflected method overrides a base class implementation via IsOverridden. This example retrieves MethodInfo for PricingCalculator.Calculate (base method), RegionalPricingCalculator.Calculate (overridden), and RegionalPricingCalculator.FormatRegion (local method), then calls IsOverridden() on each. Console output shows False for the base method, True for the overridden method, and False for the local method that does not override anything.

using System;
using System.Reflection;
using Cuemon;
using Cuemon.Reflection;

namespace MyApp.Examples;

public static class MethodInfoDecoratorExtensionsExample
{
    public static void Demonstrate()
    {
        MethodInfo baseMethod = typeof(PricingCalculator).GetMethod(nameof(PricingCalculator.Calculate))!;
        MethodInfo derivedMethod = typeof(RegionalPricingCalculator).GetMethod(nameof(PricingCalculator.Calculate))!;
        MethodInfo localMethod = typeof(RegionalPricingCalculator).GetMethod(nameof(RegionalPricingCalculator.FormatRegion))!;

        Console.WriteLine(Decorator.Enclose(baseMethod).IsOverridden());
        Console.WriteLine(Decorator.Enclose(derivedMethod).IsOverridden());
        Console.WriteLine(Decorator.Enclose(localMethod).IsOverridden());
    }
}

public class PricingCalculator
{
    public virtual decimal Calculate(decimal subtotal)
    {
        return subtotal;
    }
}

public sealed class RegionalPricingCalculator : PricingCalculator
{
    public override decimal Calculate(decimal subtotal)
    {
        return subtotal * 1.25m;
    }

    public string FormatRegion()
    {
        return "EU";
    }
}

Methods

IsOverridden(IDecorator<MethodInfo>)

Determines whether the underlying MethodInfo of the decorator has been overridden.

public static bool IsOverridden(this IDecorator<MethodInfo> decorator)

Parameters

decorator IDecorator<MethodInfo>: The IDecorator<T> to extend.

Returns

bool: true if the underlying MethodInfo of the decorator has been overridden; otherwise, false.

Exceptions

ArgumentNullException: decorator cannot be null.

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