使用属性xsi：type创建XML节点 [英] Create XML Node with attribute xsi:type

问题描述

我正在尝试创建一个XML文档。在in中有一个名为Column的元素，其属性为xsi：type =SQLINT。但是，虽然我描述的属性是它唯一的创建类型。我应用的代码在下面

 attribute = xmlDoc.CreateAttribute（  xsi：type）; 
 attribute.Value =   CharTerm; 
 userNode.Attributes.Append（attribute）; 
 

解决方案

您需要在创建属性时指定命名空间：

 attribute = doc.CreateAttribute（  xsi：type，  http://www.w3.org/2001/XMLSchema-instance） ; 

但是这会将xmlns声明添加到子节点：

 <   doc  >  
 <   user     xsi：type   =  CharTerm    xmlns：xsi   =  http://www.w3.org/2001/XMLSchema-instance    /  >  
 <   / doc  >  

如果你希望它在你需要明确声明它的根元素上：

  string  xsi = < span class =code-string>  http://www.w3.org/2001/XMLSchema-instance; 
  var  xmlns = doc.CreateAttribute（  xmlns：xsi，  http://www.w3.org/2000/xmlns/< /跨度>）; 
 xmlns.Value = xsi; 
 doc.DocumentElement.Attributes.Append（xmlns）; 
 
 attribute = doc.CreateAttribute（  xsi：type，xsi） ; 

然后你得到这个：

 <   doc     xmlns：xsi   =  http://www.w3.org/2001/XMLSchema-instance >  
 <   user     xsi：type   =  CharTerm    /  >  
 <   / doc  >  

Hi,

I am trying to create an XML document . With in there is a element called Column with property xsi:type="SQLINT". But eventhough i am describing the attribute its only creating type.Code i applied is below

attribute = xmlDoc.CreateAttribute("xsi:type");
attribute.Value = "CharTerm";
userNode.Attributes.Append(attribute);

解决方案

You need to specify the namespace when you create the attribute:

attribute = doc.CreateAttribute("xsi:type", "http://www.w3.org/2001/XMLSchema-instance");

However this will add the xmlns declaration to the child node:

<doc>
  <user xsi:type="CharTerm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" />
</doc>

If you want it to be on the root element you need to declare it explicitly:

string xsi = "http://www.w3.org/2001/XMLSchema-instance";
var xmlns = doc.CreateAttribute("xmlns:xsi", "http://www.w3.org/2000/xmlns/");
xmlns.Value = xsi;
doc.DocumentElement.Attributes.Append(xmlns);

attribute = doc.CreateAttribute("xsi:type", xsi);

Then you get this:

<doc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <user xsi:type="CharTerm" />
</doc>

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