第一种方法:采用MS现有的ConfigurationManager来进行读写
using System.Configuration; namespace Zwj.TEMS.Common { public abstract class ConfigHelper { private ConfigHelper() { } /// <summary> /// 获取配置值 /// </summary> /// <param name="key"></param> /// <returns></returns> public static string GetAppSettingValue(string key) { return ConfigurationManager.AppSettings[key]; } /// <summary> /// 设置配置值(存在则更新,不存在则新增) /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static void SetAppSettingValue(string key, string value) { if (string.IsNullOrEmpty(GetAppSettingValue(key))) { ConfigurationManager.AppSettings.Add(key, value); } else { ConfigurationManager.AppSettings.Set(key, value); } Save(); ConfigurationManager.RefreshSection("appSettings"); } /// <summary> /// 删除配置值 /// </summary> /// <param name="key"></param> public static void RemoveAppSetting(string key) { ConfigurationManager.AppSettings.Remove(key); Save(); ConfigurationManager.RefreshSection("appSettings"); } /// <summary> /// 获取连接字符串 /// </summary> /// <param name="name"></param> /// <returns></returns> public static string GetConnectionString(string name) { return ConfigurationManager.ConnectionStrings[name].ConnectionString; } /// <summary> /// 设置连接字符串的值(存在则更新,不存在则新增) /// </summary> /// <param name="name"></param> /// <param name="connstr"></param> /// <param name="provider"></param> public static void SetConnectionString(string name,string connstr, string provider) { ConnectionStringSettings connStrSettings =ConfigurationManager.ConnectionStrings[name]; new ConnectionStringSettings(name, connstr, provider); if (connStrSettings != null) { connStrSettings.ConnectionString = connstr; connStrSettings.ProviderName = provider; } else { ConfigurationManager.ConnectionStrings.Add(connStrSettings); } Save(); ConfigurationManager.RefreshSection("connectionStrings"); } /// <summary> /// 删除连接字符串配置项 /// </summary> /// <param name="name"></param> public static void RemoveConnectionString(string name) { ConfigurationManager.ConnectionStrings.Remove(name); Save(); ConfigurationManager.RefreshSection("connectionStrings"); } private static void Save() { var config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); config.Save(ConfigurationSaveMode.Modified); } } }
第二种方法:采用原生的XML+XPATH来读写(来源于网络)
//============================================== // FileName: ConfigManager // Description: 静态方法业务类,用于对C#、ASP.NET中的WinForm & WebForm 项目程序配置文件 // app.config和web.config的[appSettings]和[connectionStrings]节点进行新增、修改、删除和读取相关的操作。 //============================================== using System; using System.Data; using System.Configuration; using System.Web; using System.Collections.Generic; using System.Text; using System.Xml; public enum ConfigurationFile { AppConfig = 1, WebConfig = 2 } /// <summary> /// ConfigManager 应用程序配置文件管理器 /// </summary> public class ConfigManager { public ConfigManager() { // // TODO: 在此处添加构造函数逻辑 // } /// <summary> /// 对[appSettings]节点依据Key值读取到Value值,返回字符串 /// </summary> /// <param name="configurationFile">要操作的配置文件名称,枚举常量</param> /// <param name="key">要读取的Key值</param> /// <returns>返回Value值的字符串</returns> public static string ReadValueByKey(ConfigurationFile configurationFile, string key) { string value = string.Empty; string filename = string.Empty; if (configurationFile.ToString() == ConfigurationFile.AppConfig.ToString()) { filename = System.Windows.Forms.Application.ExecutablePath + ".config"; } else { filename = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; } XmlDocument doc = new XmlDocument(); doc.Load(filename); //加载配置文件 XmlNode node = doc.SelectSingleNode("//appSettings"); //得到[appSettings]节点 ////得到[appSettings]节点中关于Key的子节点 XmlElement element = (XmlElement)node.SelectSingleNode("//add[@key=‘" + key + "‘]"); if (element != null) { value = element.GetAttribute("value"); } return value; } /// <summary> /// 对[connectionStrings]节点依据name值读取到connectionString值,返回字符串 /// </summary> /// <param name="configurationFile">要操作的配置文件名称,枚举常量</param> /// <param name="name">要读取的name值</param> /// <returns>返回connectionString值的字符串</returns> public static string ReadConnectionStringByName(ConfigurationFile configurationFile, string name) { string connectionString = string.Empty; string filename = string.Empty; if (configurationFile.ToString() == ConfigurationFile.AppConfig.ToString()) { filename = System.Windows.Forms.Application.ExecutablePath + ".config"; } else { filename = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; } XmlDocument doc = new XmlDocument(); doc.Load(filename); //加载配置文件 XmlNode node = doc.SelectSingleNode("//connectionStrings"); //得到[appSettings]节点 ////得到[connectionString]节点中关于name的子节点 XmlElement element = (XmlElement)node.SelectSingleNode("//add[@name=‘" + name + "‘]"); if (element != null) { connectionString = element.GetAttribute("connectionString"); } return connectionString; } /// <summary> /// 更新或新增[appSettings]节点的子节点值,存在则更新子节点Value,不存在则新增子节点,返回成功与否布尔值 /// </summary> /// <param name="configurationFile">要操作的配置文件名称,枚举常量</param> /// <param name="key">子节点Key值</param> /// <param name="value">子节点value值</param> /// <returns>返回成功与否布尔值</returns> public static bool UpdateOrCreateAppSetting(ConfigurationFile configurationFile, string key, string value) { bool isSuccess = false; string filename = string.Empty; if (configurationFile.ToString() == ConfigurationFile.AppConfig.ToString()) { filename = System.Windows.Forms.Application.ExecutablePath + ".config"; } else { filename = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; } XmlDocument doc = new XmlDocument(); doc.Load(filename); //加载配置文件 XmlNode node = doc.SelectSingleNode("//appSettings"); //得到[appSettings]节点 try { ////得到[appSettings]节点中关于Key的子节点 XmlElement element = (XmlElement)node.SelectSingleNode("//add[@key=‘" + key + "‘]"); if (element != null) { //存在则更新子节点Value element.SetAttribute("value", value); } else { //不存在则新增子节点 XmlElement subElement = doc.CreateElement("add"); subElement.SetAttribute("key", key); subElement.SetAttribute("value", value); node.AppendChild(subElement); } //保存至配置文件(方式一) using (XmlTextWriter xmlwriter = new XmlTextWriter(filename, null)) { xmlwriter.Formatting = Formatting.Indented; doc.WriteTo(xmlwriter); xmlwriter.Flush(); } isSuccess = true; } catch (Exception ex) { isSuccess = false; throw ex; } return isSuccess; } /// <summary> /// 更新或新增[connectionStrings]节点的子节点值,存在则更新子节点,不存在则新增子节点,返回成功与否布尔值 /// </summary> /// <param name="configurationFile">要操作的配置文件名称,枚举常量</param> /// <param name="name">子节点name值</param> /// <param name="connectionString">子节点connectionString值</param> /// <param name="providerName">子节点providerName值</param> /// <returns>返回成功与否布尔值</returns> public static bool UpdateOrCreateConnectionString(ConfigurationFile configurationFile, string name, string connectionString, string providerName) { bool isSuccess = false; string filename = string.Empty; if (configurationFile.ToString() == ConfigurationFile.AppConfig.ToString()) { filename = System.Windows.Forms.Application.ExecutablePath + ".config"; } else { filename = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; } XmlDocument doc = new XmlDocument(); doc.Load(filename); //加载配置文件 XmlNode node = doc.SelectSingleNode("//connectionStrings"); //得到[connectionStrings]节点 try { ////得到[connectionStrings]节点中关于Name的子节点 XmlElement element = (XmlElement)node.SelectSingleNode("//add[@name=‘" + name + "‘]"); if (element != null) { //存在则更新子节点 element.SetAttribute("connectionString", connectionString); element.SetAttribute("providerName", providerName); } else { //不存在则新增子节点 XmlElement subElement = doc.CreateElement("add"); subElement.SetAttribute("name", name); subElement.SetAttribute("connectionString", connectionString); subElement.SetAttribute("providerName", providerName); node.AppendChild(subElement); } //保存至配置文件(方式二) doc.Save(filename); isSuccess = true; } catch (Exception ex) { isSuccess = false; throw ex; } return isSuccess; } /// <summary> /// 删除[appSettings]节点中包含Key值的子节点,返回成功与否布尔值 /// </summary> /// <param name="configurationFile">要操作的配置文件名称,枚举常量</param> /// <param name="key">要删除的子节点Key值</param> /// <returns>返回成功与否布尔值</returns> public static bool DeleteByKey(ConfigurationFile configurationFile, string key) { bool isSuccess = false; string filename = string.Empty; if (configurationFile.ToString() == ConfigurationFile.AppConfig.ToString()) { filename = System.Windows.Forms.Application.ExecutablePath + ".config"; } else { filename = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; } XmlDocument doc = new XmlDocument(); doc.Load(filename); //加载配置文件 XmlNode node = doc.SelectSingleNode("//appSettings"); //得到[appSettings]节点 ////得到[appSettings]节点中关于Key的子节点 XmlElement element = (XmlElement)node.SelectSingleNode("//add[@key=‘" + key + "‘]"); if (element != null) { //存在则删除子节点 element.ParentNode.RemoveChild(element); } else { //不存在 } try { //保存至配置文件(方式一) using (XmlTextWriter xmlwriter = new XmlTextWriter(filename, null)) { xmlwriter.Formatting = Formatting.Indented; doc.WriteTo(xmlwriter); xmlwriter.Flush(); } isSuccess = true; } catch (Exception ex) { isSuccess = false; } return isSuccess; } /// <summary> /// 删除[connectionStrings]节点中包含name值的子节点,返回成功与否布尔值 /// </summary> /// <param name="configurationFile">要操作的配置文件名称,枚举常量</param> /// <param name="name">要删除的子节点name值</param> /// <returns>返回成功与否布尔值</returns> public static bool DeleteByName(ConfigurationFile configurationFile, string name) { bool isSuccess = false; string filename = string.Empty; if (configurationFile.ToString() == ConfigurationFile.AppConfig.ToString()) { filename = System.Windows.Forms.Application.ExecutablePath + ".config"; } else { filename = System.AppDomain.CurrentDomain.BaseDirectory + "web.config"; } XmlDocument doc = new XmlDocument(); doc.Load(filename); //加载配置文件 XmlNode node = doc.SelectSingleNode("//connectionStrings"); //得到[connectionStrings]节点 ////得到[connectionStrings]节点中关于Name的子节点 XmlElement element = (XmlElement)node.SelectSingleNode("//add[@name=‘" + name + "‘]"); if (element != null) { //存在则删除子节点 node.RemoveChild(element); } else { //不存在 } try { //保存至配置文件(方式二) doc.Save(filename); isSuccess = true; } catch (Exception ex) { isSuccess = false; } return isSuccess; } }
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时间: 2024-10-14 19:06:10