XNamespace 类
https://docs.microsoft.com/zh-cn/dotnet/api/system.xml.linq.xnamespace?view=netframework-4.8
表示 XML 命名空间。 无法继承此类。
Dim root As New XElement("Company", _
New XAttribute("Type", "Publisher"), _
New XElement("CompanyName", "Wrox"), _
New XElement("CompanyAddress", _
New XElement("Street", "111 River Street"), _
New XElement("city", "Hoboken"), _
New XElement("State", "NJ"), _
New XElement("Counttr", "USA"), _
New XElement("Zip", "07030-5774")))
Console.WriteLine(root.ToString)
Console.WriteLine("Prss ENTER to exit")
Console.Read()