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  • C# 读取ini文件 百度问问学习文档

    C# 读取ini文件

     
    10
    有多个section,现想读取整个ini文件和指定section下所有内容
    补充: 发布答案可以,请对准题目啊,我不要指定节点的内容,我知道!我要的是读取指定区域的内容,假设你不知道有哪些section,第一步遍历,得到所有section,第二步选择指定的section(多个)输出其下所有内容。我自己的做法是用读取文件的方法。
     

    满意答案

    灬伊1丶 4级 2011-09-08

    using System.Runtime.InteropServices;

    [DllImport("kernel32.dll")]
            private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
            [DllImport("kernel32.dll")]
                 private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);

      /// <summary>
            /// 写入INI文件
            /// </summary>
            /// <param name=^Section^>节点名称</param>
            /// <param name=^Key^>关键字</param>
            /// <param name=^Value^>值</param>
            /// <param name=^filepath^>INI文件路径</param>
            static public void IniWriteValue(string Section, string Key, string Value, string filepath)
            {
                WritePrivateProfileString(Section, Key, Value, filepath);
            }

            /// <summary>
            /// 读取INI文件
            /// </summary>
            /// <param name=^Section^>节点名称</param>
            /// <param name=^Key^>关键字</param>
            /// <param name=^filepath^>INI文件路径</param>
            /// <returns>值</returns>
            static public string IniReadValue(string Section, string Key, string filepath)
            {
                StringBuilder temp = new StringBuilder(255);
                int i = GetPrivateProfileString(Section, Key, "", temp,255, filepath);
                return temp.ToString();
            }

    ini 文档格式路径假设为 D:/SETUP.ini

    [SQL]

    SVRName=192.168.1.11SQL2005

    读取实例

    IniReadValue("SQL", "SVRName"," D:/SETUP.ini");

    这样读取出来的值是192.168.1.11SQL2005

    写的话类似

    IniReadValue("SQL", "SVRName","你要写入的值"," D:/SETUP.ini");

    补充:

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

    namespace wuyisky{
      /**//**/
      /**//// 
      /// IniFiles的类
      /// 
      public class IniFiles
      {
        public string FileName; //INI文件名
        //声明读写INI文件的API函数
        [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);
        //类的构造函数,传递INI文件名
        public IniFiles(string AFileName)
        {
          // 判断文件是否存在
          FileInfo fileInfo = new FileInfo(AFileName);
          //Todo:搞清枚举的用法
          if ((!fileInfo.Exists))
          { //|| (FileAttributes.Directory in fileInfo.Attributes))
            //文件不存在,建立文件
            System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default);
            try
            {
              sw.Write("#表格配置档案");
              sw.Close();
            }

            catch
            {
              throw (new ApplicationException("Ini文件不存在"));
            }
          }
          //必须是完全路径,不能是相对路径
          FileName = fileInfo.FullName;
        }
        //写INI文件
        public void WriteString(string Section, string Ident, string Value)
        {
          if (!WritePrivateProfileString(Section, Ident, Value, FileName))
          {
     
            throw (new ApplicationException("写Ini文件出错"));
          }
        }
        //读取INI文件指定
        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);
          //必须设定0(系统默认的代码页)的编码方式,否则无法支持中文
          string s = Encoding.GetEncoding(0).GetString(Buffer);
          s = s.Substring(0, bufLen);
          return s.Trim();
        }

        //读整数
        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;
          }
        }

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

        //读布尔
        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;
          }
        }

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

        //从Ini文件中,将指定的Section名称中的所有Ident添加到列表中
        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);
          //对Section进行解析
          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;
              }
            }
          }
        }
        //从Ini文件中,读取所有的Sections的名称
        public void ReadSections(StringCollection SectionList)
        {
          //Note:必须得用Bytes来实现,StringBuilder只能取到第一个Section
          byte[] Buffer = new byte[65535];
          int bufLen = 0;
          bufLen = GetPrivateProfileString(null, null, null, Buffer,
           Buffer.GetUpperBound(0), FileName);
          GetStringsFromBuffer(Buffer, bufLen, SectionList);
        }
        //读取指定的Section的所有Value到列表中
        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, ""));
      
          }
        }
        /**/////读取指定的Section的所有Value到列表中,
        //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());
     
        //  }
        //}
        //清除某个Section
        public void EraseSection(string Section)
        {
          //
          if (!WritePrivateProfileString(Section, null, null, FileName))
          {

            throw (new ApplicationException("无法清除Ini文件中的Section"));
          }
        }
        //删除某个Section下的键
        public void DeleteKey(string Section, string Ident)
        {
          WritePrivateProfileString(Section, Ident, null, FileName);
        }
        //Note:对于Win9X,来说需要实现UpdateFile方法将缓冲中的数据写入文件
        //在Win NT, 2000和XP上,都是直接写文件,没有缓冲,所以,无须实现UpdateFile
        //执行完对Ini文件的修改之后,应该调用本方法更新缓冲区。
        public void UpdateFile()
        {
          WritePrivateProfileString(null, null, null, FileName);
        }

        //检查某个Section下的某个键值是否存在
        public bool ValueExists(string Section, string Ident)
        {
          //
          StringCollection Idents = new StringCollection();
          ReadSection(Section, Idents);
          return Idents.IndexOf(Ident) > -1;
        }

        //确保资源的释放
        ~IniFiles()
        {
          UpdateFile();
        }
      }
    }

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  • 原文地址:https://www.cnblogs.com/meimao5211/p/3333976.html
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