Support Mapping constructor with mutiple parameter

[shps951023]

Like Dapper

       /// <summary>
        /// Finds best constructor
        /// </summary>
        /// <param name="names">DataReader column names</param>
        /// <param name="types">DataReader column types</param>
        /// <returns>Matching constructor or default one</returns>
        public ConstructorInfo FindConstructor(string[] names, Type[] types)
        {
            var constructors = _type.GetConstructors(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            foreach (ConstructorInfo ctor in constructors.OrderBy(c => c.IsPublic ? 0 : (c.IsPrivate ? 2 : 1)).ThenBy(c => c.GetParameters().Length))
            {
                ParameterInfo[] ctorParameters = ctor.GetParameters();
                if (ctorParameters.Length == 0)
                    return ctor;

                if (ctorParameters.Length != types.Length)
                    continue;

                int i = 0;
                for (; i < ctorParameters.Length; i++)
                {
                    if (!string.Equals(ctorParameters[i].Name, names[i], StringComparison.OrdinalIgnoreCase))
                        break;
                    if (types[i] == typeof(byte[]) && ctorParameters[i].ParameterType.FullName == SqlMapper.LinqBinary)
                        continue;
                    var unboxedType = Nullable.GetUnderlyingType(ctorParameters[i].ParameterType) ?? ctorParameters[i].ParameterType;
                    if ((unboxedType != types[i] && !SqlMapper.HasTypeHandler(unboxedType))
                        && !(unboxedType.IsEnum && Enum.GetUnderlyingType(unboxedType) == types[i])
                        && !(unboxedType == typeof(char) && types[i] == typeof(string))
                        && !(unboxedType.IsEnum && types[i] == typeof(string)))
                    {
                        break;
                    }
                }

                if (i == ctorParameters.Length)
                    return ctor;
            }

            return null;
        }

        /// <summary>
        /// Returns the constructor, if any, that has the ExplicitConstructorAttribute on it.
        /// </summary>
        public ConstructorInfo FindExplicitConstructor()
        {
            var constructors = _type.GetConstructors(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            var withAttr = constructors.Where(c => c.GetCustomAttributes(typeof(ExplicitConstructorAttribute), true).Length > 0).ToList();

            if (withAttr.Count == 1)
            {
                return withAttr[0];
            }

            return null;
        }

        /// <summary>
        /// Gets mapping for constructor parameter
        /// </summary>
        /// <param name="constructor">Constructor to resolve</param>
        /// <param name="columnName">DataReader column name</param>
        /// <returns>Mapping implementation</returns>
        public SqlMapper.IMemberMap GetConstructorParameter(ConstructorInfo constructor, string columnName)
        {
            var parameters = constructor.GetParameters();

            return new SimpleMemberMap(columnName, parameters.FirstOrDefault(p => string.Equals(p.Name, columnName, StringComparison.OrdinalIgnoreCase)));
        }