C#iniファイル読み書きクラス

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Collections;
using System.Collections.Specialized;

namespace wuyisky{
    //// <summary> 
    /// IniFiles   
    /// </summary> 
    public class IniFiles
    {
        public string FileName; //INI    
        //    INI   API   
        [DllImport("kernel32")]
        private static extern bool WritePrivateProfileString(string section, string key, string val, string filePath);
        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, byte[] retVal, int size, string filePath);
        //      ，  INI    
        public IniFiles(string AFileName)
        {
            //          
            FileInfo fileInfo = new FileInfo(AFileName);
            //Todo:        
            if ((!fileInfo.Exists))
            { //|| (FileAttributes.Directory in fileInfo.Attributes)) 
                //     ，     
                System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default);
                try
                {
                    sw.Write("#      ");
                    sw.Close();
                }
                catch
                {
                    throw (new ApplicationException("Ini     "));
                }
            }
            //       ，        
            FileName = fileInfo.FullName;
        }
        // INI   
        public void WriteString(string Section, string Ident, string Value)
        {
            if (!WritePrivateProfileString(Section, Ident, Value, FileName))
            {
               
                throw (new ApplicationException(" Ini    "));
            }
        }
        //  INI     
        public string ReadString(string Section, string Ident, string Default)
        {
            Byte[] Buffer = new Byte[65535];
            int bufLen = GetPrivateProfileString(Section, Ident, Default, Buffer, Buffer.GetUpperBound(0), FileName);
            //    0（        ）     ，         
            string s = Encoding.GetEncoding(0).GetString(Buffer);
            s = s.Substring(0, bufLen);
            return s.Trim();
        }

        //    
        public int ReadInteger(string Section, string Ident, int Default)
        {
            string intStr = ReadString(Section, Ident, Convert.ToString(Default));
            try
            {
                return Convert.ToInt32(intStr);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return Default;
            }
        }

        //    
        public void WriteInteger(string Section, string Ident, int Value)
        {
            WriteString(Section, Ident, Value.ToString());
        }

        //    
        public bool ReadBool(string Section, string Ident, bool Default)
        {
            try
            {
                return Convert.ToBoolean(ReadString(Section, Ident, Convert.ToString(Default)));
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return Default;
            }
        }

        // Bool 
        public void WriteBool(string Section, string Ident, bool Value)
        {
            WriteString(Section, Ident, Convert.ToString(Value));
        }

        // Ini   ，    Section      Ident       
        public void ReadSection(string Section, StringCollection Idents)
        {
            Byte[] Buffer = new Byte[16384];
            //Idents.Clear(); 

            int bufLen = GetPrivateProfileString(Section, null, null, Buffer, Buffer.GetUpperBound(0),
              FileName);
            // Section     
            GetStringsFromBuffer(Buffer, bufLen, Idents);
        }

        private void GetStringsFromBuffer(Byte[] Buffer, int bufLen, StringCollection Strings)
        {
            Strings.Clear();
            if (bufLen != 0)
            {
                int start = 0;
                for (int i = 0; i < bufLen; i++)
                {
                    if ((Buffer[i] == 0) && ((i - start) > 0))
                    {
                        String s = Encoding.GetEncoding(0).GetString(Buffer, start, i - start);
                        Strings.Add(s);
                        start = i + 1;
                    }
                }
            }
        }
        // Ini   ，     Sections    
        public void ReadSections(StringCollection SectionList)
        {
            //Note:    Bytes   ，StringBuilder       Section 
            byte[] Buffer = new byte[65535];
            int bufLen = 0;
            bufLen = GetPrivateProfileString(null, null, null, Buffer,
              Buffer.GetUpperBound(0), FileName);
            GetStringsFromBuffer(Buffer, bufLen, SectionList);
        }
        //     Section   Value     
        public void ReadSectionValues(string Section, NameValueCollection Values)
        {
            StringCollection KeyList = new StringCollection();
            ReadSection(Section, KeyList);
            Values.Clear();
            foreach (string key in KeyList)
            {
                Values.Add(key, ReadString(Section, key, ""));
                
            }
        }
        /**/////     Section   Value    ， 
        //public void ReadSectionValues(string Section, NameValueCollection Values,char splitString)
        //{   string sectionValue;
        //    string[] sectionValueSplit;
        //    StringCollection KeyList = new StringCollection();
        //    ReadSection(Section, KeyList);
        //    Values.Clear();
        //    foreach (string key in KeyList)
        //    {   
        //        sectionValue=ReadString(Section, key, "");
        //        sectionValueSplit=sectionValue.Split(splitString);
        //        Values.Add(key, sectionValueSplit[0].ToString(),sectionValueSplit[1].ToString());
               
        //    }
        //}
        //    Section 
        public void EraseSection(string Section)
        {
            // 
            if (!WritePrivateProfileString(Section, null, null, FileName))
            {
                throw (new ApplicationException("    Ini    Section"));
            }
        }
        //    Section    
        public void DeleteKey(string Section, string Ident)
        {
            WritePrivateProfileString(Section, Ident, null, FileName);
        }
        //Note:  Win9X，      UpdateFile              
        // Win NT, 2000 XP ，       ，    ，  ，    UpdateFile 
        //    Ini       ，            。 
        public void UpdateFile()
        {
            WritePrivateProfileString(null, null, null, FileName);
        }

        //    Section           
        public bool ValueExists(string Section, string Ident)
        {
            // 
            StringCollection Idents = new StringCollection();
            ReadSection(Section, Idents);
            return Idents.IndexOf(Ident) > -1;
        }

        //        
        ~IniFiles()
        {
            UpdateFile();
        }
    }
}