PetaPoco支持Dynamic（ExpandoObject）类型参数

修改ParametersHelper类，添加ExpandoObject的类型判断吧，修改后的代码如下：

// PetaPoco - A Tiny ORMish thing for your POCO's.

// Copyright © 2011-2012 Topten Software.  All Rights Reserved.

 

using System;

using System.Collections.Generic;

using System.Text.RegularExpressions;

using System.Text;



namespace PetaPoco.Internal

{

    internal static class ParametersHelper

    {

        // Helper to handle named parameters from object properties

        public static string ProcessParams(string sql, object[] args_src, List<object> args_dest)

        {

            return rxParams.Replace(sql, m =>

            {

                string param = m.Value.Substring(1);



                object arg_val;



                int paramIndex;

                if (int.TryParse(param, out paramIndex))

                {

                    // Numbered parameter

                    if (paramIndex < 0 || paramIndex >= args_src.Length)

                        throw new ArgumentOutOfRangeException(string.Format("Parameter '@{0}' specified but only {1} parameters supplied (in `{2}`)", paramIndex, args_src.Length, sql));

                    arg_val = args_src[paramIndex];

                }

                else

                {

                    // Look for a property on one of the arguments with this name

                    bool found = false;

                    arg_val = null;

            

                    foreach (var o in args_src)

                    {

                        //使其支持ExpandoObject

                        if (o.GetType() == typeof(System.Dynamic.ExpandoObject))

                        {

                            var dic = o as IDictionary<string, object>;

                            if (dic.ContainsKey(param))

                            {

                                arg_val = dic[param];

                                found = true;

                                break;

                            }

                        }

                        else

                        {

                            var pi = o.GetType().GetProperty(param);

                            if (pi != null)

                            {

                                arg_val = pi.GetValue(o, null);

                                found = true;

                                break;

                            }

                        }

                    }



                    if (!found)

                        throw new ArgumentException(string.Format("Parameter '@{0}' specified but none of the passed arguments have a property with this name (in '{1}')", param, sql));

                }



                // Expand collections to parameter lists

                if ((arg_val as System.Collections.IEnumerable) != null &&

                    (arg_val as string) == null &&

                    (arg_val as byte[]) == null)

                {

                    var sb = new StringBuilder();

                    foreach (var i in arg_val as System.Collections.IEnumerable)

                    {

                        sb.Append((sb.Length == 0 ? "@" : ",@") + args_dest.Count.ToString());

                        args_dest.Add(i);

                    }

                    return sb.ToString();

                }

                else

                {

                    args_dest.Add(arg_val);

                    return "@" + (args_dest.Count - 1).ToString();

                }

            }

            );

        }



        static Regex rxParams = new Regex(@"(?<!@)@\w+", RegexOptions.Compiled);

    }

}

标红的部分就是修改过的代码