C#对INI配置文件进行读写操作方法
#region 读写ini配置文件/// <summary>/// 对INI文件进行读写/// </summary>class INIHelper{/// <summary>/// 从INI文件中读取数据/// </summary>/// <param name="filePath">INI文件的全路径</param>/// <param name="rootValue">根节点值，例如根节点[URLConfig]的值为：URLConfig</param>/// <param name="key">根节点下的键，例如url</param>/// <param name="defValue">当标记值未设定或不存在时的默认值</param>/// <returns></returns>public static string ReadFromINI(string filePath, string rootValue, string key, string defValue = ""){StringBuilder sb = new StringBuilder(1024);GetPrivateProfileString(rootValue, key, defValue, sb, 1024, filePath);return sb.ToString();}/// <summary>/// 对INI文件进行写入操作/// </summary>/// <param name="filePath">INI文件的全路径</param>/// <param name="rootValue">根节点值，例如根节点[URLConfig]的值为：URLConfig</param>/// <param name="key">根节点下的键，例如url</param>/// <param name="newVal">想要修改的内容</param>/// <returns></returns>public static void WriteToINI(string filePath, string rootValue, string key, string newVal){WritePrivateProfileString(rootValue, key, newVal, filePath);}/// <summary>/// 对INI文件进行读取操作/// </summary>/// <param name="IpAppName">表示INI文件内部根节点的值</param>/// <param name="IpKeyName">表示根节点下子标记的值</param>/// <param name="IpDefault">表示当标记值未设定或不存在时的默认值</param>/// <param name="IpReturnString">返回读取节点的值</param>/// <param name="nSize">读取的节点内容的最大容量</param>/// <param name="IpFileName">文件的全路径</param>/// <returns></returns>[System.Runtime.InteropServices.DllImport("kernel32")]static extern int GetPrivateProfileString(string IpAppName, string IpKeyName, string IpDefault, StringBuilder IpReturnString, int nSize, string IpFileName);/// <summary>/// 对INI文件进行写入操作/// </summary>/// <param name="mpAppName">INI文件内部根节点的值</param>/// <param name="mpKeyName">将要修改的标记名称</param>/// <param name="mpDefault">想要修改的内容</param>/// <param name="mpFileName">INI文件的全路径</param>/// <returns></returns>[System.Runtime.InteropServices.DllImport("kernel32")]static extern long WritePrivateProfileString(string mpAppName, string mpKeyName, string mpDefault, string mpFileName);}#endregion调用方法：
例如config.ini文件里面内容为：
[URLConfig]
url = www.csdn.net
url2= /baike/
url3= /map/
读配置文件：
string filePath = System.Environment.CurrentDirectory + @"/config.ini"; //设置config的绝对路径string url = INIHelper.ReadFromINI(filePath, "URLConfig", "url").Replace(" ", "");
写配置文件：
string filePath = System.Environment.CurrentDirectory + @"/config.ini"; //设置config的绝对路径
INIHelper.WriteToINI(filePath, "URLConfig", "Url", "www.eastcoms.com");