我使用c#希望生成一个xml,其中包含 xsd结构,
<xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
xs:complexType
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="串口通讯">
xs:complexType
xs:sequence
<xs:element name="串口名称" type="xs:string" />
<xs:element name="协议" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:schema>
我使用了
XmlDocument doc = new XmlDocument();
// Create the XML declaration.
XmlDeclaration xmlDeclaration = doc.CreateXmlDeclaration("1.0", "UTF-8", "yes");
// Create the root element.
XmlElement root = doc.CreateElement("NewDataSet");
// Create the schema element.
XmlElement schema = doc.CreateElement("xs", "schema", "http://www.w3.org/2001/XMLSchema");
schema.SetAttribute("id", "NewDataSet");
schema.SetAttribute("xmlns", "");
schema.SetAttribute("xmlns:xs", "http://www.w3.org/2001/XMLSchema");
schema.SetAttribute("xmlns:msdata", "urn:schemas-microsoft-com:xml-msdata");
实现了
<xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">的格式,
当我继续使用SetAttribute方式,
// Create the element with attributes.
XmlElement element = doc.CreateElement("xs", "element", "http://www.w3.org/2001/XMLSchema");
element.SetAttribute("name", "NewDataSet");
element.SetAttribute("msdata:IsDataSet", "true");
//element.SetAttribute("msdata:UseCurrentLocale", "true");
而生成的xml文件中,是 <xs:element name="NewDataSet" IsDataSet="true" UseCurrentLocale="true">,
IsDataSet和UseCurrentLocale丢失了前缀“ msdata:”
请教如何实现 <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">完整格式的输出,msdata为"urn:schemas-microsoft-com:xml-msdata"的前缀!
谢谢
在使用 SetAttribute 方法设置属性时,可能会遇到命名空间前缀不正确的问题。为了确保属性的命名空间前缀正确,你可以使用 XmlNamespaceManager 来声明并使用命名空间。下面是一个示例代码:
csharp
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XmlDocument doc = new XmlDocument();
// Create the XML declaration.
XmlDeclaration xmlDeclaration = doc.CreateXmlDeclaration("1.0", "UTF-8", "yes");
doc.AppendChild(xmlDeclaration);
// Create the root element.
XmlElement root = doc.CreateElement("NewDataSet");
doc.AppendChild(root);
// Create the schema element.
XmlElement schema = doc.CreateElement("xs", "schema", "http://www.w3.org/2001/XMLSchema");
schema.SetAttribute("id", "NewDataSet");
schema.SetAttribute("xmlns", "");
schema.SetAttribute("xmlns:xs", "http://www.w3.org/2001/XMLSchema");
schema.SetAttribute("xmlns:msdata", "urn:schemas-microsoft-com:xml-msdata");
// Create the element with attributes using XmlNamespaceManager.
XmlNamespaceManager nsManager = new XmlNamespaceManager(doc.NameTable);
nsManager.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");
nsManager.AddNamespace("msdata", "urn:schemas-microsoft-com:xml-msdata");
XmlElement element = doc.CreateElement("xs", "element", "http://www.w3.org/2001/XMLSchema");
element.SetAttribute("name", "NewDataSet", "http://www.w3.org/2001/XMLSchema");
element.SetAttribute("IsDataSet", "urn:schemas-microsoft-com:xml-msdata", "true");
element.SetAttribute("UseCurrentLocale", "urn:schemas-microsoft-com:xml-msdata", "true");
// Append schema and element to the root.
root.AppendChild(schema);
schema.AppendChild(element);
// Save the XML document to a file or do further processing.
doc.Save("output.xml");
在这个示例中,使用了 XmlNamespaceManager 来管理命名空间,并通过 SetAttribute 方法的第三个参数指定了属性的命名空间前缀。这样可以确保生成的 XML 元素具有正确的命名空间前缀。希望这能帮助你实现期望的 XML 结构。
using System;
using System.Xml;
class Program
{
static void Main()
{
// 创建XML文档
XmlDocument doc = new XmlDocument();
// 创建XML声明
XmlDeclaration xmlDeclaration = doc.CreateXmlDeclaration("1.0", "UTF-8", "yes");
doc.AppendChild(xmlDeclaration);
// 创建根元素
XmlElement root = doc.CreateElement("NewDataSet");
doc.AppendChild(root);
// 创建schema元素
XmlElement schema = doc.CreateElement("xs", "schema", "http://www.w3.org/2001/XMLSchema");
schema.SetAttribute("id", "NewDataSet");
schema.SetAttribute("xmlns", "");
schema.SetAttribute("xmlns:xs", "http://www.w3.org/2001/XMLSchema");
schema.SetAttribute("xmlns:msdata", "urn:schemas-microsoft-com:xml-msdata");
root.AppendChild(schema);
// 创建xs:complexType元素
XmlElement complexType = doc.CreateElement("xs", "complexType", "http://www.w3.org/2001/XMLSchema");
schema.AppendChild(complexType);
// 创建xs:choice元素
XmlElement choice = doc.CreateElement("xs", "choice", "http://www.w3.org/2001/XMLSchema");
choice.SetAttribute("minOccurs", "0");
choice.SetAttribute("maxOccurs", "unbounded");
complexType.AppendChild(choice);
// 创建xs:element元素
XmlElement element = doc.CreateElement("xs", "element", "http://www.w3.org/2001/XMLSchema");
choice.AppendChild(element);
// 创建msdata:IsDataSet属性
XmlAttribute isDataSetAttribute = doc.CreateAttribute("msdata", "IsDataSet", "urn:schemas-microsoft-com:xml-msdata");
isDataSetAttribute.Value = "true";
element.Attributes.SetNamedItem(isDataSetAttribute);
// 创建msdata:UseCurrentLocale属性
XmlAttribute useCurrentLocaleAttribute = doc.CreateAttribute("msdata", "UseCurrentLocale", "urn:schemas-microsoft-com:xml-msdata");
useCurrentLocaleAttribute.Value = "true";
element.Attributes.SetNamedItem(useCurrentLocaleAttribute);
// 保存文档到文件
doc.Save("output.xml");
}
}