INI file Read Write C#

 class INIFile
{
    private string filePath;
        
    [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);
        
    public INIFile(string filePath)
    {
        this.filePath = filePath;
    }
  
    public void Write(string section, string key, string value)
    {
        WritePrivateProfileString(section, key, value.ToLower(), this.filePath);
    }
  
    public string Read(string section, string key)
    {
        StringBuilder SB = new StringBuilder(255);
        int i = GetPrivateProfileString(section, key, "", SB, 255, this.filePath);
        return SB.ToString();
    }
          
    public string FilePath
    {
        get { return this.filePath; }
        set { this.filePath = value; }
    }
}

INIFile inif = new INIFile("D:\\config.ini");
inif.Write("Database", "Devs", "sa");
INIFile inif = new INIFile("D:\\config.ini");
Console.WriteLine("The Value is:" +inif.Read("Database", "Devs"));

//https://midnightprogrammer.net/post/readwrite-settings-to-ini-file-using-c/

Change INI File:
Easy way is to use WritePrivateProfileString and GetPrivateProfileString functions
 of Kernel32.dll for reading and writing into INI file.

Example:

For Writing to INI:

[DllImport("kernel32.dll", EntryPoint = "WritePrivateProfileString")]
public static extern long WriteValueA(string strSection, 
                                       string strKeyName, 
                                       string strValue, 
                                       string strFilePath);
Usage:

 WriteValueA("SectionToWrite", "KeyToWrite", "Value", @"D:\INIFile.ini");
For Reading from INI:

[DllImport("kernel32.dll", EntryPoint = "GetPrivateProfileString")]
public static extern int GetKeyValueA(string strSection, 
                                      string strKeyName, 
                                      string strEmpty, 
                                      StringBuilder RetVal, 
                                      int nSize, 
                                      string strFilePath);
Usage:

StringBuilder temp = new StringBuilder(255);
int i = GetKeyValueA("TargetSection", "KeyToRead", string.Empty, temp, 255, @"D:\INIFile.ini");
string sValue = temp.ToString(); //desired value of the key
CMD:
systeminfo
driverquery
tasklist
ipconfig /all
color a
color b
cls