泛型列表转ToDataTable

/// <summary>
    /// 列表转换DataTable助手
    /// </summary>
    public static class ListToDatatableHelper
    {
        /// <summary>
        /// 将泛型实体列表转换为DataTable
        /// </summary>
        public static DataTable ToDataTable<T>(List<T> items)
        {
            var tb = new DataTable(typeof(T).Name);

            PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);

            foreach (PropertyInfo prop in props)
            {
                Type t = GetCoreType(prop.PropertyType);
                tb.Columns.Add(prop.Name, t);
            }

            foreach (T item in items)
            {
                var values = new object[props.Length];

                for (int i = 0; i < props.Length; i++)
                {
                    values[i] = props[i].FastGetValue(item);
                }

                tb.Rows.Add(values);
            }

            return tb;
        }

        /// <summary>
        /// 获取实际类型
        /// </summary>
        public static Type GetCoreType(Type t)
        {
            if (t != null && IsNullable(t))
            {
                if (t.IsValueType == false)
                {
                    return t;
                }
                return Nullable.GetUnderlyingType(t);
            }
            return t;
        }

        /// <summary>
        /// 判断是否是可空类型
        /// </summary>
        public static bool IsNullable(Type t)
        {
            return t.IsValueType == false || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>));
        }
    }