1. XML基础
XML是可扩展标记语言（Extensible Markup Language,XML)是一种数据语言，它将数据以一种简单的文本格式存储，可以被人类和几乎任何计算机理解。Microsoft在.Net Framework和其他微软产品中已经完全采用它。
XML的基本格式：
Beginning Visual C# 7 Benjamin Perkins et al 458685
2. XML基本操作
C#操作XML方法详解
3. 相机参数保存和读取
创建一个相机参数XML文件保存和读取的类CameraXML
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
namespace xmlTest
{
class Camera
{
public string camID;
public int camExposure;
public int camGain;
public Camera()
{
camID = "nullID";
camExposure = 5000;
camGain = 0;
}
public Camera(string camID, int camExposure, int camGain)
{
this.camID = camID;
this.camExposure = camExposure;
this.camGain = camGain;
}
}
class CameraXML
{
///
/// 创建相机XML文件
///
/// 存储路径
/// 相机列表
public static void GenerateCameraXMLFile(string xmlFilePath, List cameraList)
{
try
{
//初始化一个xml实例
XmlDocument myXmlDoc = new XmlDocument();
//创建xml的根节点
XmlElement rootElement = myXmlDoc.CreateElement("Cameras");
//将根节点加入到xml文件中（AppendChild）
myXmlDoc.AppendChild(rootElement);
foreach (var item in cameraList)
{
//初始化第一层的第一个子节点
XmlElement firstLevelElement1 = myXmlDoc.CreateElement("Camera");
//填充第一层的第一个子节点的属性值（SetAttribute）
firstLevelElement1.SetAttribute("ID", item.camID);
//将第一层的第一个子节点加入到根节点下
rootElement.AppendChild(firstLevelElement1);
//初始化第二层的第一个子节点
XmlElement secondLevelElement11 = myXmlDoc.CreateElement("Exposure");
//填充第二层的第一个子节点的值（InnerText）
secondLevelElement11.InnerText = item.camExposure.ToString();
firstLevelElement1.AppendChild(secondLevelElement11);
XmlElement secondLevelElement12 = myXmlDoc.CreateElement("Gain");
secondLevelElement12.InnerText = item.camGain.ToString();
firstLevelElement1.AppendChild(secondLevelElement12);
}
//将xml文件保存到指定的路径下
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
public static void ReadCameraXMLFile(string xmlFilePath, out List cameraList)
{
cameraList = new List();
//初始化一个xml实例
XmlDocument myXmlDoc = new XmlDocument();
//加载xml文件（参数为xml文件的路径）
myXmlDoc.Load(xmlFilePath);
//获得第一个匹配的节点（SelectSingleNode）：此xml文件的根节点
XmlNode rootNode = myXmlDoc.SelectSingleNode("Cameras");
//分别获得该节点的InnerXml和OuterXml信息
string innerXmlInfo = rootNode.InnerXml.ToString();
string outerXmlInfo = rootNode.OuterXml.ToString();
//获得该节点的子节点（即：该节点的第一层子节点）
XmlNodeList firstLevelNodeList = rootNode.ChildNodes;
try
{
foreach (XmlNode node in firstLevelNodeList)
{
Camera camera = new Camera();
//获得该节点的属性集合
XmlAttributeCollection attributeCol = node.Attributes;
foreach (XmlAttribute attri in attributeCol)
{
//获取属性名称与属性值
string name = attri.Name;
string value = attri.Value;
camera.camID = value;//相机ID
}
//判断此节点是否还有子节点
if (node.HasChildNodes)
{
//获取该节点的第一个子节点
XmlNode secondLevelNode1 = node.FirstChild;
//获取该节点的名字
string name = secondLevelNode1.Name;
//获取该节点的值（即：InnerText）
string innerText = secondLevelNode1.InnerText;
camera.camExposure = Convert.ToInt16(innerText);//相机曝光
//获取该节点的第二个子节点（用数组下标获取）
XmlNode secondLevelNode2 = node.ChildNodes[1];
name = secondLevelNode2.Name;
innerText = secondLevelNode2.InnerText;
camera.camGain = Convert.ToInt16(innerText);//相机增益
}
cameraList.Add(camera);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
}
}
在winform中使用这个类
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml;//引入命名空间
namespace xmlTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void buttonGenerateCameraXMLFile_Click(object sender, EventArgs e)
{
List cameraList = new List();
Camera camera;
camera = new Camera("L102314123", 4500, 0);
cameraList.Add(camera);
camera = new Camera("L102314124", 5500, 0);
cameraList.Add(camera);
camera = new Camera("L102314125", 3500, 1);
cameraList.Add(camera);
camera = new Camera("L102314126", 6500, 0);
cameraList.Add(camera);
camera = new Camera("L102314127", 4880, 0);
cameraList.Add(camera);
camera = new Camera("L102314128", 9500, 0);
cameraList.Add(camera);
camera = new Camera("L102314129", 4530, 0);
cameraList.Add(camera);
camera = new Camera("L102314130", 13200, 0);
cameraList.Add(camera);
CameraXML.GenerateCameraXMLFile("D:\\Cameras.xml", cameraList);
}
private void buttonReadCameraXMLFile_Click(object sender, EventArgs e)
{
List cameraList = new List();
CameraXML.ReadCameraXMLFile("D:\\Cameras.xml", out cameraList);
foreach (var item in cameraList)
{
listBox1.Items.Add("ID:" + item.camID);
listBox1.Items.Add("Exposure:" + item.camExposure);
listBox1.Items.Add("Gain:" + item.camGain);
}
}
}
}
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