GetAttribute
Makes it easier to retrieve custom attributes of a given type from a reflected type.
Source
using System;
using System.Collections.Generic;
using System.Linq;
/// <summary>
/// Extension methods for the Type class
/// </summary>
public static class TypeExtensions
{
/// <summary>
/// Loads the custom attributes from the type
/// </summary>
/// <typeparam name="T">The type of the custom attribute to find.</typeparam>
/// <param name="typeWithAttributes">The calling assembly to search.</param>
/// <returns>The custom attribute of type T, if found.</returns>
public static T GetAttribute<T>(this Type typeWithAttributes)
where T : Attribute
{
return GetAttributes<T>(typeWithAttributes).FirstOrDefault();
}
/// <summary>
/// Loads the custom attributes from the type
/// </summary>
/// <typeparam name="T">The type of the custom attribute to find.</typeparam>
/// <param name="typeWithAttributes">The calling assembly to search.</param>
/// <returns>An enumeration of attributes of type T that were found.</returns>
public static IEnumerable<T> GetAttributes<T>(this Type typeWithAttributes)
where T : Attribute
{
// Try to find the configuration attribute for the default logger if it exists
object[] configAttributes = Attribute.GetCustomAttributes(typeWithAttributes,
typeof(T), false);
if (configAttributes != null)
{
foreach (T attribute in configAttributes)
{
yield return attribute;
}
}
}
}
Example
var attribute = typeof(SomeType).GetAttribute<XmlSerializationAttribute>();
Author: James Michael Hare (Black Rabbit Coder)
Submitted on: 14 okt. 2010
Language: C#
Type: System.Type
Views: 10567