using System;
using System.Text;

namespace CB.Common
{
    public class GenericUtils
    {
        /// <summary>
        /// 泛型类反射实例化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="typeName">需反射泛型类的类型型 格式：类路劲,类所属程序集</param>
        /// <param name="typeArgs">当前泛型类型定义的类型参数组成的类型数组的元素</param>
        /// <returns></returns>
        public static T CreateInstance<T>(string typeName, Type[] typeArgs)
        {
            if (null == typeArgs || 0 >= typeArgs.Length)
                return (T)Activator.CreateInstance(Type.GetType(typeName, false, true));
            string[] t = typeName.Split(',');
            StringBuilder sp = new StringBuilder();
            sp.Append(t[0]);
            sp.Append("`");
            sp.Append(typeArgs.Length);
            sp.Append("[");
            foreach (var item in typeArgs)
            {
                sp.AppendFormat("[{0}]", item.AssemblyQualifiedName);
            }
            sp.Append("],");
            sp.Append(t[1]);
            return (T)Activator.CreateInstance(Type.GetType(sp.ToString(), false, true));
        }
    }
}