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1.服务器重装后网站后台出现错误
2.c#读取Config文件的码下问题

服务器重装后网站后台出现错误

       晕死。我也碰到这个现象了。码下

       没办法解决，码下怎样找exlipse源码好像是码下与服务器上的权限有关。

       开始以为是码下activiti实例源码下载dll key 的原因。我都把Castle.net for 2.0的码下下载tomcat 源码下载源码都重新编译了。还是码下出现这个问题。

        解决方法：

       给C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\DSS\MachineKeys文件夹Everyon用户加上"写"权限。码下这样就可以解决了。码下

        但服务器管理员不允许加“写”权限，码下怕系统安全问题。码下我晕~~~~~~~~

c#读取Config文件的码下问题

       应用程序配置文件（App.config）是标准的 XML 文件，XML 标记和属性是码下记账本app 源码区分大小写的。它是码下可以按需要更改的，开发人员可以使用配置文件来更改设置，码下本地外卖系统源码而不必重编译应用程序。

       对于一个config文件：

       <?xml version="1.0" encoding="utf-8" ?>

       <configuration>

        <appSettings>

        <add key="ServerIP" value=".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}\.\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}\.\d{ 1,3}\.\d{ 1,3}\.\d{ 1,3}\b";

        string replacement = string.Format("{ 0}", serverIP);

        string newvalue = Regex.Replace(oldValue, pattern, 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", "..1.");

        string newIP = ConfigHelper.GetAppConfig("ServerIP");

        Console.WriteLine(newIP);

        Console.ReadKey();

        }

        catch (Exception ex)

        {

        Console.WriteLine(ex.Message);

        }

        }

        }