using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration.Provider;

namespace WMS.IData
{
    /// <summary>
    /// 数据提供者集合
    /// </summary>
    class DataProviderCollection : ProviderCollection
    {
        public new DataProvider this[string name]
        {
            get
            {
                return (DataProvider)base[name];
            }
        }

        public override void Add(ProviderBase provider)
        {
            if (provider == null)
                throw new ArgumentNullException("provider");

            if (!(provider is DataProvider))
                throw new ArgumentException
                    ("Invalid provider type", "provider");
            base.Add(provider);
        }
    }
}