GenericProviderCollection.cs :  » Bloggers » SubText » Subtext » Extensibility » Providers » C# / CSharp Open Source

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#endregion

using System;
using System.Configuration.Provider;
using Subtext.Extensibility.Properties;

namespace Subtext.Extensibility.Providers{
    /// <summary>
    /// Generic collection of Providers.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class GenericProviderCollection<T> : ProviderCollection where T : ProviderBase
    {
        /// <summary>
        /// Returns a provider by the specified section key.
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public new T this[string name]
        {
            get { return (T)base[name]; }
        }

        /// <summary>
        /// Adds a new provider to the collection.
        /// </summary>
        /// <param name="provider"></param>
        public override void Add(ProviderBase provider)
        {
            if(provider == null)
            {
                throw new ArgumentNullException("provider");
            }

            if(!(provider is T))
            {
                throw new ArgumentException(Resources.Argument_InvalidProviderType, "provider");
            }

            base.Add(provider);
        }
    }
}