C#操作ini文件

谁践踏了优雅 2022-11-09 12:52 229阅读 0赞

首先引入API函数

[DllImport("kernel32")]
            private static extern int GetPrivateProfileString(
                string lpAppName,
                string lpKeyName,
                string lpDefault,
                StringBuilder lpReturnedString,
                int nSize,
                string lpFileName);
    /// <summary>
            /// 读取ini文件中的值
            /// </summary>
            /// <param name="Section">ini文件中的session</param>
            /// <param name="key">ini文件中的键名</param>
            /// <param name="sPath">ini文件中的路径</param>
            /// <returns></returns>
            public string ReadContentValue(string Section, string key, string sPath)
            {
                StringBuilder temp = new StringBuilder(8192);
                try { GetPrivateProfileString(Section, key, "", temp, 8192, sPath); } catch (Exception e) { MessageBox.Show(e.Message); }
                return temp.ToString();
            }
    
            [DllImport("kernel32")]
            private static extern long WritePrivateProfileString(
                string mpAppName,
                string mpKeyName,
                string mpDefault,
                string mpFileName);
            [DllImport("kernel32", EntryPoint = "GetPrivateProfileString")]
            private static extern uint GetPrivateProfileStringA(string section, string key,
                string def, Byte[] retVal, int size, string filePath);

读取ini文件中所有的Session以及key的方法

/// <summary>
            /// 读取ini文件中所有的键Key
            /// </summary>
            /// <param name="SectionName">Session</param>
            /// <param name="iniFilename">ini文件路径</param>
            /// <returns></returns>
            public static List<string> ReadKeys(string SectionName, string iniFilename)
            {
                List<string> result = new List<string>();
                Byte[] buf = new Byte[65536];
                uint len = GetPrivateProfileStringA(SectionName, null, null, buf, buf.Length, iniFilename);
                int j = 0;
                for (int i = 0; i < len; i++)
                    if (buf[i] == 0)
                    {
                        result.Add(Encoding.Default.GetString(buf, j, i - j));
                        j = i + 1;
                    }
                return result;
            }
            /// <summary>
            /// 读取ini文件中所有session
            /// </summary>
            /// <param name="iniFilename">ini文件路径</param>
            /// <returns></returns>
            public static List<string> ReadSessions(string iniFilename)
            {
                List<string> result = new List<string>();
                Byte[] buf = new Byte[65536];
                uint len = GetPrivateProfileStringA(null, null, null, buf, buf.Length, iniFilename);
                int j = 0;
                for (int i = 0; i < len; i++)
                    if (buf[i] == 0)
                    {
                        result.Add(Encoding.Default.GetString(buf, j, i - j));
                        j = i + 1;
                    }
                return result;
            }

调用

/*
    [Session]
    key1=value1
    key2=value2
    */
    
    
    //str=Application.StartupPath + "\\1.ini"
    //将Session 下的key1的值value1修改为value11
    WritePrivateProfileString("Session", "key1", "value11", str);
    
    
    //读取Session下的key2的值
    ReadContentValue("Session", "key2", str);//value2
    
    //读取ini文件中所有的Key
    foreach (var item in ReadKeys("Session",str))
                {
                    Console.WriteLine(item);
                }
    
    //读取ini文件中所有的Session
    foreach (var item in ReadSessions(str))
                {
                    Console.WriteLine(item);
                }