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An INI file handling class using C#

, 14 Mar 2002
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A C# class that exposes the INI file handling functions from Kernal32.dll
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I created a C# class Ini which exposes 2 functions from KERNEL32.dll. These functions are: WritePrivateProfileString and GetPrivateProfileString

Namespaces you will need: System.Runtime.InteropServices and System.Text

The Class

using System;
using System.Runtime.InteropServices;
using System.Text;

namespace Ini
    /// <summary>
    /// Create a New INI file to store or load data
    /// </summary>
    public class IniFile
        public string path;

        private static extern long WritePrivateProfileString(string section,
            string key,string val,string filePath);
        private static extern int GetPrivateProfileString(string section,
                 string key,string def, StringBuilder retVal,
            int size,string filePath);

        /// <summary>
        /// INIFile Constructor.
        /// </summary>
        /// <PARAM name="INIPath"></PARAM>
        public IniFile(string INIPath)
            path = INIPath;
        /// <summary>
        /// Write Data to the INI File
        /// </summary>
        /// <PARAM name="Section"></PARAM>
        /// Section name
        /// <PARAM name="Key"></PARAM>
        /// Key Name
        /// <PARAM name="Value"></PARAM>
        /// Value Name
        public void IniWriteValue(string Section,string Key,string Value)
        /// <summary>
        /// Read Data Value From the Ini File
        /// </summary>
        /// <PARAM name="Section"></PARAM>
        /// <PARAM name="Key"></PARAM>
        /// <PARAM name="Path"></PARAM>
        /// <returns></returns>
        public string IniReadValue(string Section,string Key)
            StringBuilder temp = new StringBuilder(255);
            int i = GetPrivateProfileString(Section,Key,"",temp, 
                                            255, this.path);
            return temp.ToString();


Using the class

Steps to use the Ini class:

  1. In your project namespace definition add 
    using INI;
  2. Create a INIFile like this
    INIFile ini = new INIFile("C:\\test.ini");
  3. Use IniWriteValue to write a new value to a specific key in a section or use IniReadValue to read a value FROM a key in a specific Section.

That's all. It's very easy in C# to include API functions in your class(es).


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Web Developer
Canada Canada
No Biography provided

Comments and Discussions

GeneralMy Vote of 5 PinmemberSzymon Roslowski6-Aug-14 6:49 
QuestionSimple and great class PinmemberMember 1038226927-Apr-14 3:41 
SuggestionSuggestion PinmemberNathan Ferreira Dos Santos30-Jan-14 14:41 
GeneralMy vote of 5 PinmemberElena Futornyak14-Jun-13 2:16 
Questionoverwriting PinmemberMember 998609411-Jun-13 17:06 
GeneralMy vote of 5 PinprofessionalAmogh Natu27-May-13 5:52 
GeneralMy vote of 5 Pinmemberjai_magical16-Apr-13 12:40 
GeneralMy vote of 5 PinmemberSaravanan.rex5-Sep-12 5:00 
GeneralRe: My vote of 5 PinmemberHeadzup27-Sep-12 3:16 
GeneralRe: My vote of 5 PinmemberSaravanan.rex27-Sep-12 8:23 
QuestionFormClosing Pinmemberpaphnuty27-Aug-12 22:38 
Questionmy vote of 5 Pinmembervelt_99124-Apr-12 22:09 
QuestionIf you want to support unicode, use this. Pinmemberchozekun12-Mar-12 22:11 
GeneralMy vote of 5 Pinmemberkoiser13-Feb-12 4:51 
GeneralMy vote of 5 Pinmembersanket_14@rediff.com1-Nov-11 21:40 
GeneralMy vote of 5 PinmemberAli Fakoor21-Oct-11 22:44 
QuestionRead and write ini files in VB.Net PinmemberNasenbaaer5-Oct-11 4:46 
GeneralMy vote of 5 PinmemberNasenbaaer5-Oct-11 4:45 
Questionhave 5 stars PinmemberShivamkalra22-Jun-11 19:57 
Question5 star PinmemberShivamkalra22-Jun-11 19:56 
RantOK Pinmembermebaba13-May-11 0:06 
GeneralMy vote of 5 PinmemberMember 4458079 Jose5-May-11 16:35 
GeneralMy vote of 5 Pinmemberdv7617-Mar-11 23:20 
Generalsuggestion to add some more methods to this class. Pinmemberhugoandrioli@yahoo.com28-Dec-10 1:15 
GeneralRe: suggestion to add some more methods to this class. Pinmembermd5sum5-Jan-11 10:28 

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