出口SQL Server数据库表到XML使用LINQ

我知道该怎么做简单的LINQ到XML。导出SQL Server数据库表中的数据。像遵循一个简单的查询将工作：

I know how to do simple Linq To XML. Export a sql server database table data. A simple query like follow will work:

xmlDoc = new XElement("TestPoints",
                from test in myDB.TestPoints
                select
                new XElement("TestPoint",
                    new XElement("Id", test.Id),
                    new XElement("Value", test.Value),
                    new XElement("Time", test.Time),
                    new XElement("TestId", test.TestId)
                    )
                );
            xmlDoc.Save("test.xml");

然而，在这种情况下，我需要指定每个数据库列那些我需要出口。我需要的是要导出的有30多个列的表。现在，它的有点痛苦，使创建新的XElement的这种重复任务。 有什么办法来转储全部表及其所有列/行到一个XML文件在LINQ容易吗？如果没有外部指定每一列即可。谢谢你。

However, in this case, i need to specify every database column those I need to export. What I need is to export a table which have more than 30 columns. Now, its a bit painful to make such repetitively task of creating new XElement. Is there any way to dump the full table and all its columns/rows to a xml file in LinQ easily please? Without specify each column externally. Thanks.