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- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Threading;
- using System.Runtime.InteropServices;
- using System.IO;
- namespace StandardLibrary
- {
- /// <summary>
- /// INI文件操作专用类
- /// </summary>
- static class IniFile
- {
- #region API声明
- /// <summary>
- /// 获取所有段落名称
- /// </summary>
- /// <param name="lpszReturnBuffer">存放段落名称的内存地址,每个段落之间用\0分隔</param>
- /// <param name="nSize">内存大小(characters)</param>
- /// <param name="lpFileName">Ini文件</param>
- /// <returns>内容的实际长度,为0表示没有内容,为nSize-2表示内存大小不够</returns>
- [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
- private static extern uint GetPrivateProfileSectionNames(
- IntPtr lpszReturnBuffer,
- uint nSize,
- string lpFileName
- );
- /// <summary>
- /// 获取某个指定段落中所有KEY和Value
- /// </summary>
- /// <param name="lpAppName">段落名称</param>
- /// <param name="lpReturnedString">返回值的内存地址,每个之间用\0分隔</param>
- /// <param name="nSize">内存大小(characters)</param>
- /// <param name="lpFileName">Ini文件</param>
- /// <returns>内容的实际长度,为0表示没有内容,为nSize-2表示内存大小不够</returns>
- [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
- private static extern uint GetPrivateProfileSection(
- string lpAppName,
- IntPtr lpReturnedString,
- uint nSize,
- string lpFileName
- );
- /// <summary>
- /// 读取INI文件中指定的Key的值
- /// </summary>
- /// <param name="lpAppName">段落名称。如果为null,则读取INI中所有段落名称,每个节点名称之间用\0分隔</param>
- /// <param name="lpKeyName">Key名称。如果为null,则读取INI中指定段落中的所有KEY,每个KEY之间用\0分隔</param>
- /// <param name="lpDefault">读取失败时的默认值</param>
- /// <param name="lpReturnedString">读取的内容缓冲区,读取之后,多余的地方使用\0填充</param>
- /// <param name="nSize">内容缓冲区的长度</param>
- /// <param name="lpFileName">INI文件名</param>
- /// <returns>实际读取到的长度</returns>
- [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
- private static extern uint GetPrivateProfileString(
- string lpAppName,
- string lpKeyName,
- string lpDefault,
- [In, Out] char[] lpReturnedString,
- uint nSize,
- string lpFileName
- );
- //另一种声明方式,使用 StringBuilder 作为缓冲区类型的缺点是不能接受\0字符,会将\0及其后的字符截断,
- //所以对于lpAppName或lpKeyName为null的情况就不适用
- [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
- private static extern uint GetPrivateProfileString(
- string lpAppName,
- string lpKeyName,
- string lpDefault,
- StringBuilder lpReturnedString,
- uint nSize,
- string lpFileName
- );
- //再一种声明,使用string作为缓冲区的类型同char[]
- [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
- private static extern uint GetPrivateProfileString(
- string lpAppName,
- string lpKeyName,
- string lpDefault,
- string lpReturnedString,
- uint nSize,
- string lpFileName
- );
- /// <summary>
- /// 将指定的键值对写到指定的段落,如果已经存在则替换。
- /// </summary>
- /// <param name="lpAppName">段落,如果不存在此段落,则创建此段落</param>
- /// <param name="lpString">Item键值对,多个用\0分隔,形如key1=value1\0key2=value2
- /// <para>如果为string.Empty,则删除指定段落下的所有内容,保留段落</para>
- /// <para>如果为null,则删除指定段落下的所有内容,并且删除该段落</para>
- /// </param>
- /// <param name="lpFileName">INI文件</param>
- /// <returns>是否成功写入</returns>
- [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
- [return: MarshalAs(UnmanagedType.Bool)] //可以没有此行
- private static extern bool WritePrivateProfileSection(
- string lpAppName,
- string lpString,
- string lpFileName
- );
- /// <summary>
- /// 将指定的键和值写到指定的段落,如果已经存在则替换
- /// </summary>
- /// <param name="lpAppName">段落名称</param>
- /// <param name="lpKeyName">键名称。如果为null,则删除指定的段落及其所有的项目</param>
- /// <param name="lpString">值内容。如果为null,则删除指定段落中指定的键。</param>
- /// <param name="lpFileName">INI文件</param>
- /// <returns>操作是否成功</returns>
- [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
- [return: MarshalAs(UnmanagedType.Bool)]
- private static extern bool WritePrivateProfileString(
- string lpAppName,
- string lpKeyName,
- string lpString,
- string lpFileName
- );
- #endregion
- #region 封装
- /// <summary>
- /// 读取INI文件中的所有段落名称
- /// </summary>
- /// <param name="iniFile">Ini文件</param>
- /// <returns>所有段落,没有内容返回string[0]</returns>
- public static string[] INIGetAllSectionNames(string iniFile)
- {
- uint MAX_BUFFER = 32767; //默认为32767
- string[] sections = new string[0]; //返回值
- //申请内存
- IntPtr pReturnedString = Marshal.AllocCoTaskMem((int)MAX_BUFFER * sizeof(char));
- uint bytesReturned = GetPrivateProfileSectionNames(pReturnedString, MAX_BUFFER, iniFile);
- if (bytesReturned != 0)
- {
- //读取指定内存的内容
- string local = Marshal.PtrToStringAuto(pReturnedString, (int)bytesReturned).ToString();
- //每个段落之间用\0分隔,末尾有一个\0
- sections = local.Split(new char[] { '\0' }, StringSplitOptions.RemoveEmptyEntries);
- }
- //释放内存
- Marshal.FreeCoTaskMem(pReturnedString);
- return sections;
- }
- /// <summary>
- /// 获取INI文件中指定段落中的所有条目(key=value形式)
- /// </summary>
- /// <param name="iniFile">Ini文件</param>
- /// <param name="section">段落名称</param>
- /// <returns>指定段落中的所有条目,没有内容返回string[0]</returns>
- public static string[] INIGetAllItems(string iniFile, string section)
- {
- //返回值形式为 key=value,例如 Color=Red
- uint MAX_BUFFER = 32767; //默认为32767
- string[] items = new string[0]; //返回值
- //分配内存
- IntPtr pReturnedString = Marshal.AllocCoTaskMem((int)MAX_BUFFER * sizeof(char));
- uint bytesReturned = GetPrivateProfileSection(section, pReturnedString, MAX_BUFFER, iniFile);
- if (!(bytesReturned == MAX_BUFFER - 2) || (bytesReturned == 0))
- {
- string returnedString = Marshal.PtrToStringAuto(pReturnedString, (int)bytesReturned);
- items = returnedString.Split(new char[] { '\0' }, StringSplitOptions.RemoveEmptyEntries);
- }
- Marshal.FreeCoTaskMem(pReturnedString); //释放内存
- return items;
- }
- /// <summary>
- /// 获取INI文件中指定段落中的所有条目的Key列表
- /// </summary>
- /// <param name="iniFile">Ini文件</param>
- /// <param name="section">段落名称</param>
- /// <returns>如果没有内容,反回string[0]</returns>
- public static string[] INIGetAllItemKeys(string iniFile, string section)
- {
- string[] value = new string[0];
- const int SIZE = 1024 * 10;
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- char[] chars = new char[SIZE];
- uint bytesReturned = GetPrivateProfileString(section, null, null, chars, SIZE, iniFile);
- if (bytesReturned != 0)
- {
- value = new string(chars).Split(new char[] { '\0' }, StringSplitOptions.RemoveEmptyEntries);
- }
- chars = null;
- return value;
- }
- /// <summary>
- /// 读取INI文件中指定KEY的字符串型值
- /// </summary>
- /// <param name="iniFile">Ini文件</param>
- /// <param name="section">段落名称</param>
- /// <param name="key">键名称</param>
- /// <param name="defaultValue">如果没此KEY所使用的默认值</param>
- /// <returns>读取到的值</returns>
- public static string INIGetStringValue(string iniFile, string section, string key, string defaultValue)
- {
- string value = defaultValue;
- const int SIZE = 1024 * 10;
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- if (string.IsNullOrEmpty(key))
- {
- throw new ArgumentException("必须指定键名称", "key");
- }
- StringBuilder sb = new StringBuilder(SIZE);
- uint bytesReturned = GetPrivateProfileString(section, key, defaultValue, sb, SIZE, iniFile);
- if (bytesReturned != 0)
- {
- value = sb.ToString();
- }
- sb = null;
- return value;
- }
- /// <summary>
- /// 在INI文件中,将指定的键值对写到指定的段落,如果已经存在则替换
- /// </summary>
- /// <param name="iniFile">INI文件</param>
- /// <param name="section">段落,如果不存在此段落,则创建此段落</param>
- /// <param name="items">键值对,多个用\0分隔,形如key1=value1\0key2=value2</param>
- /// <returns></returns>
- public static bool INIWriteItems(string iniFile, string section, string items)
- {
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- if (string.IsNullOrEmpty(items))
- {
- throw new ArgumentException("必须指定键值对", "items");
- }
- string filePath = iniFile.Remove(iniFile.LastIndexOf("\\"));
- if (!Directory.Exists(filePath)) Directory.CreateDirectory(filePath);
- return WritePrivateProfileSection(section, items, iniFile);
- }
- /// <summary>
- /// 在INI文件中,指定段落写入指定的键及值。如果已经存在,则替换。如果没有则创建。
- /// </summary>
- /// <param name="iniFile">INI文件</param>
- /// <param name="section">段落</param>
- /// <param name="key">键</param>
- /// <param name="value">值</param>
- /// <returns>操作是否成功</returns>
- public static bool INIWriteValue(string iniFile, string section, string key, string value)
- {
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- if (string.IsNullOrEmpty(key))
- {
- throw new ArgumentException("必须指定键名称", "key");
- }
- if (value == null)
- {
- throw new ArgumentException("值不能为null", "value");
- }
- string filePath = iniFile.Remove(iniFile.LastIndexOf("\\"));
- if (!Directory.Exists(filePath)) Directory.CreateDirectory(filePath);
- return WritePrivateProfileString(section, key, value, iniFile);
- }
- /// <summary>
- /// 在INI文件中,删除指定段落中的指定的键。
- /// </summary>
- /// <param name="iniFile">INI文件</param>
- /// <param name="section">段落</param>
- /// <param name="key">键</param>
- /// <returns>操作是否成功</returns>
- public static bool INIDeleteKey(string iniFile, string section, string key)
- {
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- if (string.IsNullOrEmpty(key))
- {
- throw new ArgumentException("必须指定键名称", "key");
- }
- return WritePrivateProfileString(section, key, null, iniFile);
- }
- /// <summary>
- /// 在INI文件中,删除指定的段落。
- /// </summary>
- /// <param name="iniFile">INI文件</param>
- /// <param name="section">段落</param>
- /// <returns>操作是否成功</returns>
- public static bool INIDeleteSection(string iniFile, string section)
- {
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- return WritePrivateProfileString(section, null, null, iniFile);
- }
- /// <summary>
- /// 在INI文件中,删除指定段落中的所有内容。
- /// </summary>
- /// <param name="iniFile">INI文件</param>
- /// <param name="section">段落</param>
- /// <returns>操作是否成功</returns>
- public static bool INIEmptySection(string iniFile, string section)
- {
- if (string.IsNullOrEmpty(section))
- {
- throw new ArgumentException("必须指定段落名称", "section");
- }
- return WritePrivateProfileSection(section, string.Empty, iniFile);
- }
- /// <summary>
- /// 在INI文件中,删除所有段落
- /// </summary>
- /// <param name="iniFile">INI文件</param>
- public static bool INIDeleteAll(string iniFile)
- {
- try
- {
- string[] section = INIGetAllSectionNames(iniFile);
- for (int i = 0; i < section.Length; i++)
- {
- INIDeleteSection(iniFile, section[i]);
- }
- return true;
- }
- catch { return false; }
- }
- #endregion
- }
- }
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