If you want to read or write *.ini files within a C# code you can use the following code snippet.

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;

    [DllImport("kernel32")]
    private static extern long WritePrivateProfileString(string section,
        string key, string val, string filePath);
    [DllImport("kernel32")]
    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)
    {
      WritePrivateProfileString(Section, Key, Value, this.path);
    }

    /// <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();
    }
  }
}