คำสั่ง connection string ใส่ notepad แล้วจะเรียกมาใช้ยังไงคับ

Dim FILE_NAME As String = "C:\Users\Owner\Documents\test.txt"
Dim objReader As New System.IO.StreamReader(FILE_NAME)
TextBox1.Text = objReader.ReadToEnd
objReader.Close()

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace TORServices
{
    public static class clsINI
    {
        [DllImport("kernel32.dll", EntryPoint = "GetPrivateProfileStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
        private static extern int GetPrivateProfileString(string lpApplicationName, string lpKeyName, string lpDefault, global::System.Text.StringBuilder lpReturnedString, int nSize, string lpFileName);
        [DllImport("kernel32.dll", EntryPoint = "WritePrivateProfileStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
        private static extern int WritePrivateProfileString(string lpApplicationName, string lpKeyName, string lpString, string lpFileName);
        public static string ReadValue(string Path, string section, string key)
        {
            global::System.Text.StringBuilder sb = new global::System.Text.StringBuilder(255);
            dynamic i = GetPrivateProfileString(section, key, "", sb, 255, Path);
            return sb.ToString();
        }
        public static void WriteValue(string Path, string section, string key, string value) { WritePrivateProfileString(section, key, value, Path); }
            public static string textFileReader(string pathFileName)
   {
     string line;
     StreamReader fs;
     try 
     {
        fs = new StreamReader(pathFileName);
        line = fs.ReadToEnd();

        /* อ่าน Encode จาก String ที่อ่านมาได้จาก text file */ 
        Encoding encodeSource = Encoding.GetEncoding(fs.CurrentEncoding.CodePage);
        fs.Close();

        //* ............ */
        Encoding systemEncode = Encoding.Default; 
        Encoding targetEncode = encodeSource;

        /* สั่ง getbyte array จาก string ที่เราอ่านมา */
        byte[] srcData = systemEncode.GetBytes( line );
        byte[] dstData;

        /* ถ้าเป้น Encode ต่างกัน windows และ text file ให้ Convert byte array ไปเป็น text file encode */
        if( targetEncode != systemEncode )
          dstData = Encoding.Convert( systemEncode, targetEncode, srcData );
        else 
          dstData = srcData;

        /* convert bytearray ไปเป็น string ด้วย text file encode */
        return  targetEncode.GetString(dstData);

     }
     catch(Exception ex)
     {
        throw new IOException("cannot find " + pathFileName,ex);
     }

   }
        public static System.Collections.Generic.List<string> textFileReaderFormline(string pathFileName)
        {

            System.Collections.Generic.List<string> list = new System.Collections.Generic.List<string>();
            System.IO.StreamReader fs;
            fs = new System.IO.StreamReader(pathFileName, System.Text.Encoding.GetEncoding(874));

            string line;
            while ((line = fs.ReadLine()) != null)
            {
                list.Add(line);
            }
            return list;

        }
    }
}

// ดึงมาใช้
            string txt = TORServices.clsINI.ReadValue(@"C:\ini\log.txt", "Test", "connection");
        //เขียนลงไป
            TORServices.clsINI.WriteValue(@"C:\ini\log.txt", "Test", "connection","fsdfrgergfxfsdged");

Public Sub CrateDBConnection(ByVal FullExcelFileName As String)
        Dim conString As String = System.IO.File.ReadAllText("D:\dbconfig.txt")
        Dim cn As OleDbConnection
        Dim strConnectionString As String = conString
        Try 
            cn = New OleDbConnection(strConnectionString)
            cn.Open
        Catch  As System.Exception
            
        End Try
        
    End Sub

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace TORServices
{
    public static class clsINI
    {
        [DllImport("kernel32.dll", EntryPoint = "GetPrivateProfileStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
        private static extern int GetPrivateProfileString(string lpApplicationName, string lpKeyName, string lpDefault, global::System.Text.StringBuilder lpReturnedString, int nSize, string lpFileName);
        [DllImport("kernel32.dll", EntryPoint = "WritePrivateProfileStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
        private static extern int WritePrivateProfileString(string lpApplicationName, string lpKeyName, string lpString, string lpFileName);
        public static string ReadValue(string Path, string section, string key)
        {
            global::System.Text.StringBuilder sb = new global::System.Text.StringBuilder(255);
            dynamic i = GetPrivateProfileString(section, key, "", sb, 255, Path);
            return sb.ToString();
        }
        public static void WriteValue(string Path, string section, string key, string value) { WritePrivateProfileString(section, key, value, Path); }
            public static string textFileReader(string pathFileName)
   {
     string line;
     StreamReader fs;
     try 
     {
        fs = new StreamReader(pathFileName);
        line = fs.ReadToEnd();

        /* อ่าน Encode จาก String ที่อ่านมาได้จาก text file */ 
        Encoding encodeSource = Encoding.GetEncoding(fs.CurrentEncoding.CodePage);
        fs.Close();

        //* ............ */
        Encoding systemEncode = Encoding.Default; 
        Encoding targetEncode = encodeSource;

        /* สั่ง getbyte array จาก string ที่เราอ่านมา */
        byte[] srcData = systemEncode.GetBytes( line );
        byte[] dstData;

        /* ถ้าเป้น Encode ต่างกัน windows และ text file ให้ Convert byte array ไปเป็น text file encode */
        if( targetEncode != systemEncode )
          dstData = Encoding.Convert( systemEncode, targetEncode, srcData );
        else 
          dstData = srcData;

        /* convert bytearray ไปเป็น string ด้วย text file encode */
        return  targetEncode.GetString(dstData);

     }
     catch(Exception ex)
     {
        throw new IOException("cannot find " + pathFileName,ex);
     }

   }
        public static System.Collections.Generic.List<string> textFileReaderFormline(string pathFileName)
        {

            System.Collections.Generic.List<string> list = new System.Collections.Generic.List<string>();
            System.IO.StreamReader fs;
            fs = new System.IO.StreamReader(pathFileName, System.Text.Encoding.GetEncoding(874));

            string line;
            while ((line = fs.ReadLine()) != null)
            {
                list.Add(line);
            }
            return list;

        }
    }
}

' ดึงมาใช้
            Dim txt As String =  TORServices.clsINI.ReadValue("C:\ini\log.txt","Test","connection") 
        'เขียนลงไป
            TORServices.clsINI.WriteValue("C:\ini\log.txt", "Test", "connection","fsdfrgergfxfsdged")

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\SexDatabase.mdb;User Id=admin;
Password=;

Imports System.IO
Imports System.Text

'Hard code for demo purpose..
Dim fileName As String = Application.StartupPath & "/" & "connectDB.txt"
Dim lines As New List(Of String)(File.ReadAllLines(fileName))
'StartWith/EndWith/Other...
Dim ห1 = lines.SelectMany(Function(หอย, เหม็น) If(หอย.Contains("Provider"), {เหม็น}, {})).ToArray()
Dim ห2 = lines.SelectMany(Function(หอย, เหม็น) If(หอย.Contains("Data Source"), {เหม็น}, {})).ToArray()
Dim ห3 = lines.SelectMany(Function(หอย, เหม็น) If(หอย.Contains("User Id"), {เหม็น}, {})).ToArray()
Dim ห4 = lines.SelectMany(Function(หอย, เหม็น) If(หอย.Contains("Password"), {เหม็น}, {})).ToArray()

'Finally
Dim dt As New DataTable
Using cn As New OleDbConnection(ห1 + ห2 + ห3 + ห4)
    Using da As New OleDbDataAdapter("Select * From Where", cn)
        da.Fill(dt)
    End Using
End Using