小编Dim*_*ima的帖子

我是否可以序列化可序列化对象的通用列表,而无需指定其类型.

像下面破坏的代码背后的意图:

List<ISerializable> serializableList = new List<ISerializable>();

XmlSerializer xmlSerializer = new XmlSerializer(serializableList.GetType());

serializableList.Add((ISerializable)PersonList);

using (StreamWriter streamWriter = System.IO.File.CreateText(fileName))
{
    xmlSerializer.Serialize(streamWriter, serializableList);
}

编辑:

对于那些想要了解详细信息的人:当我尝试运行此代码时,它在XMLSerializer [...]行上出错:

无法序列化System.Runtime.Serialization.ISerializable接口.

如果我改变List<object>我得到"There was an error generating the XML document.".InnerException的细节是"{"The type System.Collections.Generic.List1[[Project1.Person, ConsoleFramework, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] may not be used in this context."}"

person对象定义如下:

[XmlRoot("Person")]
public class Person
{
    string _firstName = String.Empty;
    string _lastName = String.Empty;

    private Person()
    {
    }

    public Person(string lastName, string firstName)
    {
        _lastName = lastName;
        _firstName …

eclipse pulsar,eclipse mtj和eclipse me之间有什么区别？

我正在使用实体框架
所以我想使用两个表 - tblContractor和tbSiteByCont表编写一个sql命令.它在SQL中看起来像这样

SELECT     PKConID, Fname, Lname
FROM         tblContractor
WHERE     (PKConID NOT IN
                          (SELECT     FKConID
                            FROM          tbSiteByCont
                            WHERE      (FKSiteID = 13)))

但我不知道怎么写Linq.

我试过这样的

  var query1 = from s in db.tblSiteByConts   
                        where  s.FKSiteID == id
                        select s.FKConID;


            var query = from c in db.tblContractors   
                        where c.PKConID != query1.Any()
                        select Contractor;

但这不起作用.那我该怎么写呢？程序是什么？我是Linq的新手.