是否有使用動態的XElement或XDocument的實現？

Question

我想知道是否有一個DynamicXml的內置或開源實現？

喜歡的東西

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

但對於XML字符串。

因此，而不是寫

xitem.Element("SomeElement") 

我想有

dxitem.SomeElement 

Answer 1

Jon Skeet的C# In Depth這個想法在第14章（在C＃4章動態bahviour）舉行會談，並有可下載的來源here。

Answer 2

快速search使用C＃4動態產生的讀出和寫入XML幾種實現：

• http://tore.vestues.no/2009/01/05/creating-a-dynamic-xml-reader-with-c-40/
• http://blogs.msdn.com/b/mcsuksoldev/archive/2010/02/04/dynamic-xml-reader-with-c-and-net-4-0.aspx
• http://michaelmonteleone.net/2010/06/21/suspiciously-pleasant-xml-with-csharp-4/
• http://nomadic-developer.com/2010/04/05/using-dynamic-with-c-to-read-xml/
• http://www.justnbusiness.com/post/2009/07/08/The-Illusion-of-Strongly-Typed-XML-with-C.aspx

，可能還有更多

Answer 3

最近我花了一些時間圍繞構建動態包裝XElement和XDocument爲我的項目之一，你可以看看它here。

想法完全相同，但我將實現分爲兩個獨立的類：DynamicXmlReader和DynamicXmlWriter，其中前者只能讀取元素和屬性，後來可以添加子元素和屬性。如果DynamicXmlReader找不到合適的子元素或屬性，則會引發異常，但DynamicXmlWriter會將它們添加到基礎XElement中。

例如，在這裏我的兩個單元測試，我正在使用的樣品從喬恩斯基特的書：

[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.")); 

} 

或者創建完全相同的XML文檔的另一個單元測試：

[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.")); 

}