using System;using System.Collections.Generic;using System.Text;using System.Xml;using System.Reflection;using System.IO;namespace SMRouterSender{    public class ClassConfigurationSettings    {         /// <summary>        /// 修改配置文件(数据库连接字符串)        /// </summary>        /// <param name="connString"></param>        public static void UpdateConfig( string SMSenderDBIP, string SMSenderSaUserName, string SMSenderSaPassword)        {            try            {                string m_strFullPath = "";                Assembly Asm = Assembly.GetExecutingAssembly();                XmlDocument xmlDoc = new XmlDocument();             //正式用例                                //m_strFullPath = Asm.Location.Substring(0, (Asm.Location.LastIndexOf("\\") + 1)) + "SMRouterSender.exe.config";                //测试用例                m_strFullPath = Asm.Location.Substring(0, (Asm.Location.LastIndexOf("bin"))) + "app.config";                              xmlDoc.Load(m_strFullPath);                //文件属性的控制（读->写）                if ((File.GetAttributes(m_strFullPath) & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)                {                    File.SetAttributes(m_strFullPath, FileAttributes.Normal);                }                     XmlNodeList nodeList = xmlDoc.SelectSingleNode("/configuration/connectionStrings").ChildNodes;                foreach (XmlNode xn in nodeList)//遍历所有子节点                {                    XmlElement xe = (XmlElement)xn;                     if (GetIndex(xe) != -1)                    {                        string LastestValue = "workstation id=ACER;packet size=4096;user id=" + SMSenderSaUserName + ";data source=" + SMSenderDBIP + ";persist security info=True;initial catalog=SMSRouter;password=" + SMSenderSaPassword + ";";                        xe.SetAttribute("connectionString", LastestValue);                    }                }                                xmlDoc.Save(m_strFullPath);                ////文件属性的控制（写->读）                File.SetAttributes(m_strFullPath, FileAttributes.ReadOnly);                            }            catch (System.NullReferenceException NullEx)            {                throw NullEx;            }            catch (Exception ex)            {                throw ex;            }        }         private static int GetIndex(XmlElement xe)        {            return xe.GetAttribute("name").IndexOf("SMSRouter");        }    }}

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