配置文件概述:
应用程序配置文件是标准的 XML 文件,XML 标记和属性是区分大小写的。它是可以按需要更改的,开发人员可以使用配置文件来更改设置,而不必重编译应用程序。配置文件的根节点是configuration。我们经常访问的是appSettings,它是由.Net预定义的配置节。我们经常使用的配置文件的架构是客诉下面的形式。先大概有个印象,通过后面的实例会有一个比较清楚的认识。下面的“配置节”可以理解为进行配置一个XML的节点。
对于一个config文件:
<?xml version="1.0" enCoding="utf-8" ?><configuration> <appSettings> <add key="ServerIP" value="127.0.0.1"></add> <add key="DataBase" value="WarehouseDB"></add> <add key="user" value="sa"></add> <add key="password" value="sa"></add> </appSettings></configuration>
对config配置文件的读写类:
using System;using System.Collections.Generic;using System.linq;using System.Text;using System.Text.RegularExpressions;using System.Configuration;using System.ServiceModel;using System.ServiceModel.Configuration;namespace NetUtilitylib{ public static class ConfigHelper { //依据连接串名字connectionname返回数据连接字符串 public static string GetConnectionStringsConfig(string connectionname) { //指定config文件读取 string file = System.windows.Forms.Application.ExecutablePath; System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(file); string connectionString = config.ConnectionStrings.ConnectionStrings[connectionname].ConnectionString.ToString(); return connectionString; } ///<summary> ///更新连接字符串 ///</summary> ///<param name="newname">连接字符串名称</param> ///<param name="newConString">连接字符串内容</param> ///<param name="newProvIDername">数据提供程序名称</param> public static voID UpdateConnectionStringsConfig(string newname,string newConString,string newProvIDername) { //指定config文件读取 string file = System.windows.Forms.Application.ExecutablePath; Configuration config = ConfigurationManager.OpenExeConfiguration(file); bool exist = false; //记录该连接串是否已经存在 //如果要更改的连接串已经存在 if (config.ConnectionStrings.ConnectionStrings[newname] != null) { exist = true; } // 如果连接串已存在,首先删除它 if (exist) { config.ConnectionStrings.ConnectionStrings.Remove(newname); } //新建一个连接字符串实例 ConnectionStringSettings mySettings = new ConnectionStringSettings(newname,newConString,newProvIDername); // 将新的连接串添加到配置文件中. config.ConnectionStrings.ConnectionStrings.Add(mySettings); // 保存对配置文件所作的更改 config.Save(ConfigurationSaveMode.ModifIEd); // 强制重新载入配置文件的ConnectionStrings配置节 ConfigurationManager.RefreshSection("ConnectionStrings"); } ///<summary> ///返回*.exe.config文件中appSettings配置节的value项 ///</summary> ///<param name="strKey"></param> ///<returns></returns> public static string GetAppConfig(string strKey) { string file = System.windows.Forms.Application.ExecutablePath; Configuration config = ConfigurationManager.OpenExeConfiguration(file); foreach (string key in config.AppSettings.Settings.AllKeys) { if (key == strKey) { return config.AppSettings.Settings[strKey].Value.ToString(); } } return null; } ///<summary> ///在*.exe.config文件中appSettings配置节增加一对键值对 ///</summary> ///<param name="newKey"></param> ///<param name="newValue"></param> public static voID UpdateAppConfig(string newKey,string newValue) { string file = System.windows.Forms.Application.ExecutablePath; Configuration config = ConfigurationManager.OpenExeConfiguration(file); bool exist = false; foreach (string key in config.AppSettings.Settings.AllKeys) { if (key == newKey) { exist = true; } } if (exist) { config.AppSettings.Settings.Remove(newKey); } config.AppSettings.Settings.Add(newKey,newValue); config.Save(ConfigurationSaveMode.ModifIEd); ConfigurationManager.RefreshSection("appSettings"); } // 修改system.serviceModel下所有服务终结点的IP地址 public static voID UpdateServiceModelConfig(string configPath,string serverIP) { Configuration config = ConfigurationManager.OpenExeConfiguration(configPath); ConfigurationSectionGroup sec = config.SectionGroups["system.serviceModel"]; ServiceModelSectionGroup serviceModelSectionGroup = sec as ServiceModelSectionGroup; ClIEntSection clIEntSection = serviceModelSectionGroup.ClIEnt; foreach (ChannelEndpointElement item in clIEntSection.Endpoints) { string pattern = @"\b\d{1,3}\.\d{1,3}\b"; string address = item.Address.ToString(); string replacement = string.Format("{0}",serverIP); address = Regex.Replace(address,pattern,replacement); item.Address = new Uri(address); } config.Save(ConfigurationSaveMode.ModifIEd); ConfigurationManager.RefreshSection("system.serviceModel"); } // 修改applicationSettings中App.PropertIEs.Settings中服务的IP地址 public static voID UpdateConfig(string configPath,string serverIP) { Configuration config = ConfigurationManager.OpenExeConfiguration(configPath); ConfigurationSectionGroup sec = config.SectionGroups["applicationSettings"]; ConfigurationSection configSection = sec.Sections["DataService.PropertIEs.Settings"]; ClIEntSettingsSection clIEntSettingsSection = configSection as ClIEntSettingsSection; if (clIEntSettingsSection != null) { SettingElement element1 = clIEntSettingsSection.Settings.Get("DataService_SystemManagerWS_SystemManagerWS"); if (element1 != null) { clIEntSettingsSection.Settings.Remove(element1); string oldValue = element1.Value.ValueXml.InnerXml; element1.Value.ValueXml.InnerXml = GetNewIP(oldValue,serverIP); clIEntSettingsSection.Settings.Add(element1); } SettingElement element2 = clIEntSettingsSection.Settings.Get("DataService_EquipManagerWS_EquipManagerWS"); if (element2 != null) { clIEntSettingsSection.Settings.Remove(element2); string oldValue = element2.Value.ValueXml.InnerXml; element2.Value.ValueXml.InnerXml = GetNewIP(oldValue,serverIP); clIEntSettingsSection.Settings.Add(element2); } } config.Save(ConfigurationSaveMode.ModifIEd); ConfigurationManager.RefreshSection("applicationSettings"); } private static string GetNewIP(string oldValue,string serverIP) { string pattern = @"\b\d{1,3}\b"; string replacement = string.Format("{0}",serverIP); string newvalue = Regex.Replace(oldValue,replacement); return newvalue; } }}
测试代码如下:
class Program { static voID Main(string[] args) { try { //string file = System.windows.Forms.Application.ExecutablePath + ".config"; //string file1 = AppDomain.CurrentDomain.Setupinformation.Configurationfile; string serverIP = ConfigHelper.GetAppConfig("ServerIP"); string db = ConfigHelper.GetAppConfig("DataBase"); string user = ConfigHelper.GetAppConfig("user"); string password = ConfigHelper.GetAppConfig("password"); Console.Writeline(serverIP); Console.Writeline(db); Console.Writeline(user); Console.Writeline(password); ConfigHelper.UpdateAppConfig("ServerIP","192.168.1.11"); string newIP = ConfigHelper.GetAppConfig("ServerIP"); Console.Writeline(newIP); Console.ReadKey(); } catch (Exception ex) { Console.Writeline(ex.Message); } } }
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