C#讀寫(xiě)Config配置文件案例
一、簡(jiǎn)介
應(yīng)用程序配置文件(App.config)是標(biāo)準(zhǔn)的 XML 文件,XML 標(biāo)記和屬性是區(qū)分大小寫(xiě)的。它是可以按需要更改的,開(kāi)發(fā)人員可以使用配置文件來(lái)更改設(shè)置,而不必重編譯應(yīng)用程序。
*.exe.config配置文件樣式:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
</connectionStrings>
<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>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>二、代碼
1.配置文件讀寫(xiě)類
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 XMLDemo1
{
public static class ConfigHelper
{
#region ConnectionStrings
//依據(jù)連接串名字connectionName返回?cái)?shù)據(jù)連接字符串
public static string GetConnectionStringsConfig(string connectionName)
{
//指定config文件讀取
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>
///更新連接字符串
///</summary>
///<param name="newName">連接字符串名稱</param>
///<param name="newConString">連接字符串內(nèi)容</param>
///<param name="newProviderName">數(shù)據(jù)提供程序名稱</param>
public static void UpdateConnectionStringsConfig(string newName, string newConString, string newProviderName)
{
//指定config文件讀取
string file = System.Windows.Forms.Application.ExecutablePath;
Configuration config = ConfigurationManager.OpenExeConfiguration(file);
bool exist = false; //記錄該連接串是否已經(jīng)存在
//如果要更改的連接串已經(jīng)存在
if (config.ConnectionStrings.ConnectionStrings[newName] != null)
{
exist = true;
}
// 如果連接串已存在,首先刪除它
if (exist)
{
config.ConnectionStrings.ConnectionStrings.Remove(newName);
}
//新建一個(gè)連接字符串實(shí)例
ConnectionStringSettings mySettings =
new ConnectionStringSettings(newName, newConString, newProviderName);
// 將新的連接串添加到配置文件中.
config.ConnectionStrings.ConnectionStrings.Add(mySettings);
// 保存對(duì)配置文件所作的更改
config.Save(ConfigurationSaveMode.Modified);
// 強(qiáng)制重新載入配置文件的ConnectionStrings配置節(jié)
ConfigurationManager.RefreshSection("ConnectionStrings");
}
#endregion
#region appSettings
///<summary>
///返回*.exe.config文件中appSettings配置節(jié)的value項(xiàng)
///</summary>
///<param name="strKey"></param>
///<returns></returns>
public static string GetAppConfig(string strKey)
{
//D:\Winform\xml文檔操作\XMLDemo1\bin\Debug\XMLDemo1.EXE
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配置節(jié)增加一對(duì)鍵值對(duì)
///</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");
}
#endregion
#region
// 修改system.serviceModel下所有服務(wù)終結(jié)點(diǎn)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中服務(wù)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;
}
#endregion
}
}2.Main 函數(shù)
namespace XMLDemo1
{
class Program
{
static void Main(string[] args)
{
try
{
//D:\Winform\xml文檔操作\XMLDemo1\bin\Debug\XMLDemo1.EXE
//string file0 = System.Windows.Forms.Application.ExecutablePath;
//D:\Winform\xml文檔操作\XMLDemo1\bin\Debug\XMLDemo1.EXE.config
//string file = System.Windows.Forms.Application.ExecutablePath + ".config";
//D:\Winform\xml文檔操作\XMLDemo1\bin\Debug\XMLDemo1.vshost.exe.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", "192.168.0.1");
string newIP = ConfigHelper.GetAppConfig("ServerIP");
Console.WriteLine(newIP);
ConfigHelper.UpdateConnectionStringsConfig("connstr4", ".......", "System.Data.Sqlclient");
Console.ReadKey();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}到此這篇關(guān)于C#讀寫(xiě)Config配置文件的文章就介紹到這了。希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。
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