不了解LinqPad中Dapper的动态查询结果

我正在调查使用Dapper并在LinqPad中尝试过这个（你需要提供自己的连接字符串并设置一个'Ticket'表来实际运行它）：

using ( var conn = new SqlConnection( builder.ToString() ) )
{
    conn.Open();
    var loadSql = 
        @"Insert into Ticket(StatusKey, Status, ContactFirstName, ContactPhoneNumber, WorkflowKey )
            Values ( @statusKey, @status, @first, @phoneNumber, @key )";
    var values = new[] 
    {
        new { statusKey = "O", status = "Open", first = "Bob", phoneNumber = "6855551425", key = "std" },
        new { statusKey = "R", status = "Researching", first = "Sue", phoneNumber = "77785552136", key = "exp" },
        new { statusKey = "OD", status = "Overdue", first = "Ted", phoneNumber = "6795551496", key = "std" },
        new { statusKey = "C", status = "Closed", first = "Mark", phoneNumber = "9945552678", key = "std" }
    };
    "Rows Added".Dump();
    conn.Execute( loadSql, values ).Dump();
    "".Dump();

    // Using <dynamic> returns same results
    var tickets = conn.Query("Select Status, ContactFirstName, ContactPhoneNumber From Ticket").ToList();
    "Tickets Found".Dump();
    tickets.Count().Dump();
    "".Dump();

    "Attempt to get first ticket".Dump();
    var firstTicket = tickets[0];
    firstTicket.Dump();
    (firstTicket ?? "first ticket is null").Dump();
    "--- End First Ticket Attempt ---".Dump();
    "".Dump();

    "Access items returned by query".Dump();
    tickets.ForEach( ticketObj => 
    {
            // ticketObj isn't null, but it not there either??
            "  Try to dump enumerated ticket".Dump();
            if(ticketObj == null) "    is null".Dump();
            ticketObj.Dump();
            //ticketObj.GetType().Dump(); // Null ref exception?
            "  --- End Enumeration Dump ---".Dump();

            // Have to cast to dictionary
            var ticket = (IDictionary<string,object>)ticketObj;
            string.Format("    {0}: {1} at {2}", ticket["Status"], ticket["ContactFirstName"], ticket["ContactPhoneNumber"]).Dump();

            "".Dump();
    });
    "--- End Access Test ---".Dump();
    "".Dump();


    conn.Execute("Truncate table ticket");
}

我得到了以下结果：

Rows Added   
4

Tickets Found  
4

Attempt to get first ticket
--- End First Ticket Attempt ---

Access items returned by query
  Try to dump enumerated ticket
  --- End Enumeration Dump ---
    Open: Bob at 6855551425

  Try to dump enumerated ticket
  --- End Enumeration Dump ---
    Researching: Sue at 77785552136

  Try to dump enumerated ticket
  --- End Enumeration Dump ---
    Overdue: Ted at 6795551496

  Try to dump enumerated ticket
  --- End Enumeration Dump ---
    Closed: Mark at 9945552678

--- End Access Test ---

如你所见，以下是奇怪的：

• 它允许我访问第一个项目，但它不会转储，不是null（??），并且有四个项目被返回。
• 当我枚举时，如果我转换为IDictionary <string，object>，它就可以了。但枚举的实际项目（ticketObj）再次不为null，但我无法转储它。如果我尝试获取其类型，我会得到一个空引用异常。

如果我也使用通用的Query <dynamic>版本，结果是一样的。

我认为动态结果应该是Expandos，我可以做类似的事情

ticketObj.Status.Dump();

即查询中的字段将转换为Query返回的每个对象的属性。我错过了什么？这对Dapper的动态特性有何影响？或者LinqPad可能无法使用动态对象？