C#教程之C# XML创建解析、XML格式化｜C#教程

分手后的思念是犯贱 2023-09-24 12:22 43阅读 0赞

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导入命名空间：

VS需要在项目中添加引用system.XML; 代码中添加 using System.XML和using System.IO;

XML范例：

![复制代码][020944844a1c2f5e091d769d300df3fa.gif]

ValidFlight

436179

436180

![复制代码][c486856dc8f92a69bc25c0e805ffb230.gif]

XML解析：

方法一：

![复制代码][a513a4d1c833493b1e0db9277b33f39c.gif]

XmlNode rootNode=XDoc.SelectSingleNode("/MSG/ValidFlight");

foreach (XmlNode Xnode in rootNode.ChildNodes)

int FlightId=Convert.ToInt32(Xnode.SelectSingleNode("FlightID").InnerText);

string RunWay=Xnode.SelectSingleNode("Runway")==null ? null : Xnode.SelectSingleNode("Runway").InnerText;

string Stand=Xnode.SelectSingleNode("Stand")==null ? null : Xnode.SelectSingleNode("Stand").InnerText;

![复制代码][8c09b91babfd915887f0415b8fad5db2.gif]

方法二：

![复制代码][0d3f971d379f348bd5b8b2af4e027bef.gif]

XmlNode nodelist=XDoc.SelectSingleNode("MSG/ValidFlight");

foreach (XmlNode Xnode in nodelist)

int FlightId=Convert.ToInt32(Xnode\["FlightID"\].InnerText);

string RunWay=Xnode\["Runway"\]==null ? null : Xnode.Xnode\["Runway"\].InnerText;

string Stand=Xnode\["Stand"\]==null ? null :Xnode\["Stand"\].InnerText;

![复制代码][73ba898a8f614c3635606b44f83c2a3e.gif]

XML创建

![复制代码][43ddcfc68ba7ad7ef9fe64330bb02162.gif]

XmlDocument xmlDoc=new XmlDocument();

//创建根节点

xmlDoc.LoadXml(" ");

XmlElement root = xmlDoc.DocumentElement;

//创建一级节点

XmlElement flight =xmlDoc.CreateElement("flight");

//创建第二级节点

XmlElement flightPlan =xmlDoc.CreateElement("flightPlan");

XmlElement fpid =xmlDoc.CreateElement("fpid");

fpid.InnerText =32;

flightPlan.AppendChild(fpid);

//创建第二个节点

XmlElement fpflag =xmlDoc.CreateElement("fpflag");

fpflag.InnerText =1;

fpflag.SetAttribute("name","fpflag");

flightPlan.AppendChild(fpflag);

flight.AppendChild(flightPlan);

root.AppendChild(flight);

![复制代码][70b5265ceb2ce157029ab42de04d4693.gif]

XML格式化

![复制代码][b700fb53f49d87d02e5c2c75b229a861.gif]

private static string formatXml(XmlDocument xml)

XmlDocument xd =xml as XmlDocument;

StringBuilder sb =new StringBuilder();

StringWriter sw =new StringWriter(sb);

XmlTextWriter xtw =null;

try

xtw =new XmlTextWriter(sw);

xtw.Formatting = Formatting.Indented;

xtw.Indentation =1;

xtw.IndentChar =' ';

xd.WriteTo(xtw);

finally

if (xtw==null)

xtw.Close();

return sb.ToString();

![复制代码][9a8a587920383744a31f020398f8af2d.gif]

[020944844a1c2f5e091d769d300df3fa.gif]: https://img-blog.csdnimg.cn/img_convert/020944844a1c2f5e091d769d300df3fa.gif
[c486856dc8f92a69bc25c0e805ffb230.gif]: https://img-blog.csdnimg.cn/img_convert/c486856dc8f92a69bc25c0e805ffb230.gif
[a513a4d1c833493b1e0db9277b33f39c.gif]: https://img-blog.csdnimg.cn/img_convert/a513a4d1c833493b1e0db9277b33f39c.gif
[8c09b91babfd915887f0415b8fad5db2.gif]: https://img-blog.csdnimg.cn/img_convert/8c09b91babfd915887f0415b8fad5db2.gif
[0d3f971d379f348bd5b8b2af4e027bef.gif]: https://img-blog.csdnimg.cn/img_convert/0d3f971d379f348bd5b8b2af4e027bef.gif
[73ba898a8f614c3635606b44f83c2a3e.gif]: https://img-blog.csdnimg.cn/img_convert/73ba898a8f614c3635606b44f83c2a3e.gif
[43ddcfc68ba7ad7ef9fe64330bb02162.gif]: https://img-blog.csdnimg.cn/img_convert/43ddcfc68ba7ad7ef9fe64330bb02162.gif
[70b5265ceb2ce157029ab42de04d4693.gif]: https://img-blog.csdnimg.cn/img_convert/70b5265ceb2ce157029ab42de04d4693.gif
[b700fb53f49d87d02e5c2c75b229a861.gif]: https://img-blog.csdnimg.cn/img_convert/b700fb53f49d87d02e5c2c75b229a861.gif
[9a8a587920383744a31f020398f8af2d.gif]: https://img-blog.csdnimg.cn/img_convert/9a8a587920383744a31f020398f8af2d.gif