-
C#教程之C# 写入XML文档三种方法详细介绍
我在以前的博客中介绍了如何使用XmlDocument类对XML进行操作,以及如何使用LINQ to XML对XML进行操作。它们分别使用了XmlDocument类和XDocument类。在本文中,我再介绍一个类,XmlTextWriter。我们分别用这三个类将同样的xml内容写入文档,看一看哪种写法最直观、简便。
我们要写入的XML文档内容为
<?xml version="1.0" encoding="UTF-8"?>
<Contacts>
<Contact id="01">
<Name>Daisy Abbey</Name>
<Gender>female</Gender>
</Contact>
</Contacts>
(1)使用XmlDocument类:
var xmlDoc = new XmlDocument();
//Create the xml declaration first
xmlDoc.AppendChild(xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null));
//Create the root node and append into doc
var el = xmlDoc.CreateElement("Contacts");
xmlDoc.AppendChild(el);
// Contact
XmlElement elementContact = xmlDoc.CreateElement("Contact");
XmlAttribute attrID = xmlDoc.CreateAttribute("id");
attrID.Value = "01";
elementContact.Attributes.Append(attrID);
el.AppendChild(elementContact);
// Contact Name
XmlElement elementName = xmlDoc.CreateElement("Name");
elementName.InnerText = "Daisy Abbey";
elementContact.AppendChild(elementName);
// Contact Gender
XmlElement elementGender = xmlDoc.CreateElement("Gender");
elementGender.InnerText = "female";
elementContact.AppendChild(elementGender);
xmlDoc.Save("test1.xml");
(2)使用LINQ to XML 的XDocument类:
var doc = new XDocument(
new XElement("Contacts",
new XElement("Contact",
new XAttribute("id", "01"),
new XElement("Name", "Daisy Abbey"),
new XElement("Gender", "female")
)
)
);
doc.Save("test2.xml");
(3) 使用XmlTextWriter类:
String filename = String.Concat("test3.xml");
using (StreamWriter sw = new StreamWriter(filename))
{
// Create Xml Writer.
XmlTextWriter xmlWriter = new XmlTextWriter(sw);
// 也可以使用public XmlTextWriter(string filename, Encoding encoding)来构造
// encoding默认为 UTF-8.
//XmlTextWriter writer = new XmlTextWriter("test3.xml", null);
// Set indenting so that its easier to read XML when open in Notepad and such apps.
xmlWriter.Formatting = Formatting.Indented;
// This will output the XML declaration
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("Contacts");
xmlWriter.WriteStartElement("Contact");
xmlWriter.WriteAttributeString("id", "01");
xmlWriter.WriteElementString("Name", "Daisy Abbey");
xmlWriter.WriteElementString("Gender", "female");
// close contact </contact>
xmlWriter.WriteEndElement();
// close contacts </contact>
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Close();
}
从上面的代码基本上还是可以看出来,使用LINQ to XML是最简便的。
我们要写入的XML文档内容为
复制代码 代码如下:
<?xml version="1.0" encoding="UTF-8"?>
<Contacts>
<Contact id="01">
<Name>Daisy Abbey</Name>
<Gender>female</Gender>
</Contact>
</Contacts>
(1)使用XmlDocument类:
复制代码 代码如下:
var xmlDoc = new XmlDocument();
//Create the xml declaration first
xmlDoc.AppendChild(xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null));
//Create the root node and append into doc
var el = xmlDoc.CreateElement("Contacts");
xmlDoc.AppendChild(el);
// Contact
XmlElement elementContact = xmlDoc.CreateElement("Contact");
XmlAttribute attrID = xmlDoc.CreateAttribute("id");
attrID.Value = "01";
elementContact.Attributes.Append(attrID);
el.AppendChild(elementContact);
// Contact Name
XmlElement elementName = xmlDoc.CreateElement("Name");
elementName.InnerText = "Daisy Abbey";
elementContact.AppendChild(elementName);
// Contact Gender
XmlElement elementGender = xmlDoc.CreateElement("Gender");
elementGender.InnerText = "female";
elementContact.AppendChild(elementGender);
xmlDoc.Save("test1.xml");
(2)使用LINQ to XML 的XDocument类:
复制代码 代码如下:
var doc = new XDocument(
new XElement("Contacts",
new XElement("Contact",
new XAttribute("id", "01"),
new XElement("Name", "Daisy Abbey"),
new XElement("Gender", "female")
)
)
);
doc.Save("test2.xml");
(3) 使用XmlTextWriter类:
复制代码 代码如下:
String filename = String.Concat("test3.xml");
using (StreamWriter sw = new StreamWriter(filename))
{
// Create Xml Writer.
XmlTextWriter xmlWriter = new XmlTextWriter(sw);
// 也可以使用public XmlTextWriter(string filename, Encoding encoding)来构造
// encoding默认为 UTF-8.
//XmlTextWriter writer = new XmlTextWriter("test3.xml", null);
// Set indenting so that its easier to read XML when open in Notepad and such apps.
xmlWriter.Formatting = Formatting.Indented;
// This will output the XML declaration
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("Contacts");
xmlWriter.WriteStartElement("Contact");
xmlWriter.WriteAttributeString("id", "01");
xmlWriter.WriteElementString("Name", "Daisy Abbey");
xmlWriter.WriteElementString("Gender", "female");
// close contact </contact>
xmlWriter.WriteEndElement();
// close contacts </contact>
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Close();
}
从上面的代码基本上还是可以看出来,使用LINQ to XML是最简便的。
最新更新
Objective-C语法之代码块(block)的使用
VB.NET eBook
Add-in and Automation Development In VB.NET 2003 (F
Add-in and Automation Development In VB.NET 2003 (8
Add-in and Automation Development in VB.NET 2003 (6
Add-in and Automation Development In VB.NET 2003 (5
AddIn Automation Development In VB.NET 2003 (4)
AddIn And Automation Development In VB.NET 2003 (2)
Addin and Automation Development In VB.NET 2003 (3)
AddIn And Automation Development In VB.NET 2003 (1)
2个场景实例讲解GaussDB(DWS)基表统计信息估
常用的 SQL Server 关键字及其含义
动手分析SQL Server中的事务中使用的锁
openGauss内核分析:SQL by pass & 经典执行
一招教你如何高效批量导入与更新数据
天天写SQL,这些神奇的特性你知道吗?
openGauss内核分析:执行计划生成
[IM002]Navicat ODBC驱动器管理器 未发现数据
初入Sql Server 之 存储过程的简单使用
SQL Server -- 解决存储过程传入参数作为s
武装你的WEBAPI-OData入门
武装你的WEBAPI-OData便捷查询
武装你的WEBAPI-OData分页查询
武装你的WEBAPI-OData资源更新Delta
5. 武装你的WEBAPI-OData使用Endpoint 05-09
武装你的WEBAPI-OData之API版本管理
武装你的WEBAPI-OData常见问题
武装你的WEBAPI-OData聚合查询
OData WebAPI实践-OData与EDM
OData WebAPI实践-Non-EDM模式