.net 操作INI文件

using System.Runtime.InteropServices;
using System.Text;

namespace FaureciaManager
{
    public class FileINI
    {
        /// <summary>
        /// 写操作
        /// </summary>
        /// <param name="section">节</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        [DllImport("Kernel32")]
        private static extern long WritePrivateProfileString(string section, string key, string value, string filePath);

        /// <summary>
        /// 读操作
        /// </summary>
        /// <param name="section">接</param>
        /// <param name="key">键</param>
        /// <param name="defValue">未读取到的默认值</param>
        /// <param name="retvalue">读取到的值</param>
        /// <param name="size">大小</param>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        [DllImport("Kernel32")]
        private static extern long GetPrivateProfileString(string section, string key, string defValue, StringBuilder retvalue, int size, string filePath);

        /// <summary>
        /// 读INI文件
        /// </summary>
        /// <param name="section">节</param>
        /// <param name="key">键</param>
        /// <param name="defValue">未读取到时候的默认值</param>
        /// <param name="filePath">文件路径</param>
        /// 用法 FileINI.ReadIni("ConfigURL", "URL", "192.168.10.128:7500", ConfigFilePath);
        public static StringBuilder ReadIni(string section, string key, string defValue, string filePath)
        {
            StringBuilder retValue = new StringBuilder();
             GetPrivateProfileString(section, key, defValue, retValue, 256, filePath);
             return retValue;
        }

        /// <summary>
        /// 写INI文件
        /// </summary>
        /// <param name="section">节</param>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        /// <param name="filePath">文件路径</param>
        /// 用法  FileINI.WriteIni("ConfigURL", "URL", this.tbxUrl.Text.Trim(), ConfigFilePath);
        public static long WriteIni(string section, string key, string value, string filePath)
        {
            return WritePrivateProfileString(section, key, value, filePath);
        }

        /// <summary>
        /// 删除节
        /// </summary>
        /// <param name="section">节</param>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        public static long DeleteSection(string section, string filePath)
        {
            return WritePrivateProfileString(section, null, null, filePath);
        }

        /// <summary>
        /// 删除键
        /// </summary>
        /// <param name="section">节</param>
        /// <param name="key">键</param>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        public static long DeleteKey(string section, string key, string filePath)
        {
            return WritePrivateProfileString(section, key, null, filePath);
        }
    }
}