using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Xml;namespace ConsoleApplication1{    /// 
    /// 配置文件工具类    /// 
    public static class ConfigUtil    {        /// 
        /// 修改Config配置文件的值        /// 
        ///         ///         ///         public static void SetAppSettingsExe(string filePath, string key, string newValue)        {            try            {                var doc = new XmlDocument();                doc.Load(filePath);                doc.SelectSingleNode("/configuration/appSettings/add[@key='" + key + "']").Attributes["value"].Value = newValue;                doc.Save(filePath);                doc.Load(filePath);                doc = null;            }            catch (Exception ex)            {                throw ex;            }        }        /// 
        /// 获取Config配置文件的值        /// 
        ///         ///         public static string GetAppSettingsExe(string filePath, string key)        {            try            {                var doc = new XmlDocument();                doc.Load(filePath);                return doc.SelectSingleNode("/configuration/appSettings/add[@key='" + key + "']").Attributes["value"].Value;            }            catch (Exception ex)            {                throw ex;            }        }        /// 
        /// 修改vshost.exe.Config配置文件的值        /// 
        ///         ///         public static void SetAppSettingsVshostExe(string key, string value)        {            try            {                //vshost.exe.Config                var doc = new XmlDocument();                doc.Load(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);                doc.SelectSingleNode("/configuration/appSettings/add[@key='" + key + "']").Attributes["value"].Value = value;                doc.Save(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);            }            catch (Exception ex)            {                throw ex;            }        }        /// 
        /// 获取vshost.exe.Config配置文件的值        /// 
        ///         /// 
            public static string GetAppSettingsVshostExe(string key)        {            try            {                var doc = new XmlDocument();                doc.Load(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);                return doc.SelectSingleNode("/configuration/appSettings/add[@key='" + key + "']").Attributes["value"].Value;            }            catch (Exception ex)            {                throw ex;            }        }    }}

 

 

调用：

ConfigUtil.SetAppSettingsVshostExe("aa123", "你们");            var v = ConfigUtil.GetAppSettingsExe(@"E:\项目\ConsoleApplication1\app.config", "aa");            var v2 = ConfigUtil.GetAppSettingsVshostExe("aa");            ConfigUtil.SetAppSettingsExe(@"E:\项目\ConsoleApplication1\app.config", "aa", "马");