C#读取xml配置文件

 

一、配置xml

 

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <Section Name="system">
    <Key Name="srcPath" value="E:\EDIFileTest\EDIPackageA" />    
    <Key Name="tarPath" value="E:\EDIFileTest\EDIPackageB" />
    <Key Name="savePath" value="E:\EDIFileTest\Test.csv" />
  </Section>
</configuration>

View Code

Section的Name值可以自定义，可以有多个Section节点；

Section节点下的Key节点用来记录Name、Value值，程序根据Name取Value值

 

二、xml帮助类

 

/// <summary>
        /// 获取XML配置文件的值
        /// </summary>
        /// <param name="section"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string getValue(string section, string key)
        {
            string retValue = string.Empty;
            XmlDocument xd = new XmlDocument();
            xd.Load(configlFile);
            XmlElement xe = xd.DocumentElement;
            if (xe.Name == "configuration")
            {
                 //根据固定的文档结构查找指定配置项
                foreach (System.Xml.XmlLinkedNode xcea in xe.ChildNodes)
                {
                    if (xcea.NodeType != System.Xml.XmlNodeType.Element)  //如果不是元素，继续
                    {
                        continue;
                    }
                    System.Xml.XmlElement xce = (System.Xml.XmlElement)xcea;
                    if ((xce.NodeType == System.Xml.XmlNodeType.Element) && (xce.HasAttributes) && (xce.Name=="Section" ))
                    {
                        if (xce.Attributes[0].Name == "Name" && xce.Attributes[0].Value == section)  // 通过属性判断当前元素是否是需要查找的配置项
                        {
                            foreach (System.Xml.XmlLinkedNode xccea in xce.ChildNodes)
                            {
                                if (xccea.NodeType != System.Xml.XmlNodeType.Element)  //如果不是元素，继续
                                {
                                    continue;
                                }
                               
                                System.Xml.XmlElement xcce = (System.Xml.XmlElement)xccea;
                                if (xcce.NodeType == System.Xml.XmlNodeType.Element  && xcce.HasAttributes && xcce.Name == "Key")
                                {
                                    if (xcce.Attributes[0].Name == "Name" && xcce.Attributes[0].Value == key)
                                    {
                                        if (string.IsNullOrEmpty(retValue))
                                        {
                                            retValue = xcce.Attributes[1].Value;
                                        }
                                        else
                                        {
                                            retValue = retValue + "," +  xcce.Attributes[1].Value;
                                        }
                                       
                                    }
                                }
                            }
                        }
                    }
                }
            }
            return removeRightComma(retValue);
        }

View Code

三、程序调用

string srcPath = XMLConfig.getValue("system", "srcPath");