Question

我想知道是否有DynamicXml的内置或开源实现？

像

这样的东西

var djson = System.Web.Helpers.Json.Decode(jsonText);
int id = djson.Id;

但是对于xml字符串。

所以而不是写

xitem.Element("SomeElement")

我想要

dxitem.SomeElement

Answer 1

Jon Skeet C# In Depth在第14章（C＃4中关于动态行为的章节）中讨论了这个想法，以及可下载的源here。

Answer 2

快速search产生了几种使用C＃4动态读取和编写XML的实现：

可能还有更多

Answer 3

最近我花了一些时间为我的一个项目围绕XElement和XDocument构建动态包装器，你可以看看它here。

理念完全相同但我将实现拆分为两个单独的类：DynamicXmlReader和DynamicXmlWriter，其中前者只能读取元素和属性，以后可以添加子元素和属性。如果DynamicXmlReader无法找到合适的子元素或属性，DynamicXmlWriter会将其添加到基础XElement中，则[TestCase] public void SkeetBookXmlTest() { string books = @"<books> <book name=""Mortal Engines""> <author name=""Philip Reeve"" /> </book> <book name=""The Talisman""> <author name=""Stephen King"" /> <author name=""Peter Straub"" /> </book> <book name=""Rose""> <author name=""Holly Webb"" /> <excerpt>Rose was remembering the illustrations from Morally Instructive Tales for the Nursery.</excerpt> </book> </books>"; dynamic dynamicXml = XElement.Parse(books).AsDynamic(); Assert.That(dynamicXml.book[0]["name"].Value, Is.EqualTo("Mortal Engines")); Assert.That(dynamicXml.book[0].author["name"].Value, Is.EqualTo("Philip Reeve")); Assert.That(dynamicXml.book[2]["name"].Value, Is.EqualTo("Rose")); Assert.That((string)dynamicXml.book[2].excerpt, Is.EqualTo("Rose was remembering the illustrations from Morally Instructive Tales for the Nursery.")); }会引发异常。

例如，在我的两个单元测试中，我使用的是Jon Skeet的书中的样本：

[TestCase]
public void SkeetBookXmlTest()
{
    // Jon Skeet in his C# in Depth used following sample
    string books =
@"<books>
  <book name=""Mortal Engines"">
    <author name=""Philip Reeve"" />
  </book>
  <book name=""The Talisman"">
    <author name=""Stephen King"" />
    <author name=""Peter Straub"" />
  </book>
  <book name=""Rose"">
    <author name=""Holly Webb"" />
    <excerpt>Rose was remembering the illustrations from Morally Instructive Tales for the Nursery.</excerpt>
  </book>
</books>";

// Lets create this data dynamically
XElement element = new XElement("books");
dynamic dynamicXml = element.AsDynamicWriter();

dynamicXml.book[0]["name"] = "Mortal Engines";
dynamicXml.book[0].author["name"] = "Philip Reeve";

dynamicXml.book[1]["name"] = "The Tailisman";
dynamicXml.book[1].author[0]["name"] = "Stephen King";
dynamicXml.book[1].author[1]["name"] = "Peter Straub";

dynamicXml.book[2]["name"] = "Rose";
dynamicXml.book[2].author["name"] = "Holly Webb";
dynamicXml.book[2].excerpt = "Rose was remembering the illustrations from Morally Instructive Tales for the Nursery.";

Console.WriteLine(element);

Assert.That(dynamicXml.book[0]["name"].Value, Is.EqualTo("Mortal Engines"));

Assert.That(dynamicXml.book[0].author["name"].Value, Is.EqualTo("Philip Reeve"));

Assert.That(dynamicXml.book[2]["name"].Value, Is.EqualTo("Rose"));

Assert.That((string)dynamicXml.book[2].excerpt, Is.EqualTo("Rose was remembering the illustrations from Morally Instructive Tales for the Nursery."));

}

或者另一个创建完全相同的xml文档的单元测试：

{{1}}

是否有使用动态的XElement或XDocument的实现？

3 个答案: