花开不败 2009-09-08
学习Linq时,经常会遇到Linq实现XML转换问题,这里将介绍Linq实现XML转换问题的解决方法。
Linq实现XML转换,将内存中的对象转换为XML
通过 LINQ 查询,可以轻松地在内存中的数据结构、SQL 数据库、ADO.NET 数据集和XML流或文档之间转换数据。下面的示例是Linq实现XML转换,将内存中的数据结构中的对象转换为XML元素。
class XMLTransform
{
static void Main()
{
// Create the data source by using a collection initializer.
List<Student> students = new List<Student>()
{
new Student {First="Svetlana", Last="Omelchenko", ID=111,
Scores = new List<int>{97, 92, 81, 60}},
new Student {First="Claire", Last="O’Donnell", ID=112,
Scores = new List<int>{75, 84, 91, 39}},
new Student {First="Sven", Last="Mortensen", ID=113,
Scores = new List<int>{88, 94, 65, 91}},
};
// Create the query.
var studentsToXML = new XElement("Root",
from student in students
let x = String.Format("{0},{1},{2},{3}", student.Scores[0],
student.Scores[1], student.Scores[2], student.Scores[3])
select new XElement("student",
new XElement("First", student.First),
new XElement("Last", student.Last),
new XElement("Scores", x)
) // end "student"
); // end "Root"
// Execute the query.
Console.WriteLine(studentsToXML);
// Keep the console open in debug mode.
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
}
}