本文共 4764 字，大约阅读时间需要 15 分钟。
原文:
INI文件是一种按照特点方式排列的文本文件。每一个INI文件构成都非常类似，由若干段落（section）组成，在每个带括号的标题下面，是若干个以单个单词开头的关键词（keyword）和一个等号，等
号右边的就是关键字对应的值（value）。其一般形式如下：
[section1]
keyword1=value1
keyword2=value2
keyword3=value3
[section2]
keyword1=value1
keyword2=value2
class Program { [DllImport( " kernel32 " )] private static extern long WritePrivateProfileString ( string section , string key , string val , string filepath); // 参数说明：section：INI文件中的段落；key：INI文件中的关键字；val：INI文件中关键字的数值；filePath：INI文件的完整的路径和名称。 [DllImport ( " kernel32 " )] private static extern int GetPrivateProfileString ( string section , string key , string def , StringBuilder retVal , int size , string filePath ) ; // 参数说明：section：INI文件中的段落名称；key：INI文件中的关键字；def：无法读取时候时候的缺省数值；retVal：读取数值；size：数值的大小；filePath：INI文件的完整路径和名称。 public static void Main( string [] args) { string section = " database " ; string key = " sql " ; // string value="server.;database=pubs;uid=sa;pwd="; string fileName = " d:\\config.ini " ; try { // 写入ini节点 // WritePrivateProfileString(section,key,value,fileName); // 读取ini节点 StringBuilder sb = new StringBuilder( 255 ); GetPrivateProfileString(section,key, " 无法读取 " ,sb, 255 ,fileName); Console.WriteLine(sb.ToString()); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } Console.Write( " Press any key to continue . . . " ); Console.ReadKey( true ); } } 整理出ini文件操作辅且类
/// <summary> /// 读写INI文件的类。 /// </summary> public class INIHelper { // 读写INI文件相关。 [DllImport( " kernel32.dll " , EntryPoint = " WritePrivateProfileString " , CharSet = CharSet.Ansi)] public static extern long WritePrivateProfileString( string section, string key, string val, string filePath); [DllImport( " kernel32.dll " , EntryPoint = " GetPrivateProfileString " , CharSet = CharSet.Ansi)] public static extern int GetPrivateProfileString( string section, string key, string def, StringBuilder retVal, int size, string filePath); [DllImport( " kernel32.dll " , EntryPoint = " GetPrivateProfileSectionNames " , CharSet = CharSet.Ansi)] public static extern int GetPrivateProfileSectionNames(IntPtr lpszReturnBuffer, int nSize, string filePath); [DllImport( " KERNEL32.DLL " , EntryPoint = " GetPrivateProfileSection " , CharSet = CharSet.Ansi)] public static extern int GetPrivateProfileSection( string lpAppName, byte [] lpReturnedString, int nSize, string filePath); /// <summary> /// 向INI写入数据。 /// </summary> /// <PARAM name="Section"> 节点名。 </PARAM> /// <PARAM name="Key"> 键名。 </PARAM> /// <PARAM name="Value"> 值名。 </PARAM> public static void Write( string Section, string Key, string Value, string path) { WritePrivateProfileString(Section, Key, Value, path); } /// <summary> /// 读取INI数据。 /// </summary> /// <PARAM name="Section"> 节点名。 </PARAM> /// <PARAM name="Key"> 键名。 </PARAM> /// <PARAM name="Path"> 值名。 </PARAM> /// <returns> 相应的值。 </returns> public static string Read( string Section, string Key, string path) { StringBuilder temp = new StringBuilder( 255 ); int i = GetPrivateProfileString(Section, Key, "" , temp, 255 , path); return temp.ToString(); } /// <summary> /// 读取一个ini里面所有的节 /// </summary> /// <param name="sections"></param> /// <param name="path"></param> /// <returns></returns> public static int GetAllSectionNames( out string [] sections, string path) { int MAX_BUFFER = 32767 ; IntPtr pReturnedString = Marshal.AllocCoTaskMem(MAX_BUFFER); int bytesReturned = GetPrivateProfileSectionNames(pReturnedString, MAX_BUFFER, path); if (bytesReturned == 0 ) { sections = null ; return - 1 ; } string local = Marshal.PtrToStringAnsi(pReturnedString, ( int )bytesReturned).ToString(); Marshal.FreeCoTaskMem(pReturnedString); // use of Substring below removes terminating null for split sections = local.Substring( 0 , local.Length - 1 ).Split( ' \0 ' ); return 0 ; } /// <summary> /// 得到某个节点下面所有的key和value组合 /// </summary> /// <param name="section"></param> /// <param name="keys"></param> /// <param name="values"></param> /// <param name="path"></param> /// <returns></returns> public static int GetAllKeyValues( string section, out string [] keys, out string [] values, string path) { byte [] b = new byte [ 65535 ]; GetPrivateProfileSection(section, b, b.Length, path); string s = System.Text.Encoding.Default.GetString(b); string [] tmp = s.Split(( char ) 0 ); ArrayList result = new ArrayList(); foreach ( string r in tmp) { if (r != string .Empty) result.Add(r); } keys = new string [result.Count]; values = new string [result.Count]; for ( int i = 0 ; i < result.Count; i ++ ) { string [] item = result[i].ToString().Split( new char [] { ' = ' }); if (item.Length == 2 ) { keys[i] = item[ 0 ].Trim(); values[i] = item[ 1 ].Trim(); } else if (item.Length == 1 ) { keys[i] = item[ 0 ].Trim(); values[i] = "" ; } else if (item.Length == 0 ) { keys[i] = "" ; values[i] = "" ; } } return 0 ; } }
转载地址：http://rvmwo.baihongyu.com/