怎么编写appconfig文件

如果是编译后生销乎成的程改销序运行，放在（bin文件夹下酒可以找到亏歼悉）如果是f5调试的话，就放在窗体文件.cs目录那一层以上都是相对路径你也可以设置绝对路径C:\App.config这样就可以了

通用配置文件。

因为appconfig文件夹是包含的设置和配置拦旁信息以及不同的程序可以以不同的格式存储信隐这些数据，所以是各种程序使用的通用配置文件。

AppConfig服务是SAE为开发者提供的对web服务器进行自定义配置的功能。使用AppConfig，开发者可以很方便的实现以下功能： 目录默认页面、自定义错误页面、压缩、页面重定向、页面过期、设置响简坦橡应头的content-type、设置页面访问权限。

应用程序配置文件（App.config）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，厅粗开发人员可以扮让镇使用配置文件来更改设置，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="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

///滑漏</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", "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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