config.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Runtime.InteropServices;
using System.IO.Ports;

namespace bluetool
{
    public partial class config : Form
    {
        private string FileName;

        //声明读写config.ini文件的API函数 用于保存设置
        [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);


        //读取INI文件指定路径
        public string ReadIni(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();
        }
        //写入INI文件
        public void WriteIni(string Section, string Ident, string Value)
        {
            if (!WritePrivateProfileString(Section, Ident, Value, FileName))
            {

                throw (new ApplicationException("写入配置文件出错"));
            }

        }

        //初始化下拉串口名称列表框
        private void InitCOM()
        { 
            GetIni();
            string[] ports = SerialPort.GetPortNames();
            Array.Sort(ports);
            comboPortName.Items.AddRange(ports);
            comboPortName.SelectedIndex = comboPortName.Items.IndexOf(ReadIni("BTCOM", "btcom", ""));
            comboBaudrate.SelectedIndex = comboBaudrate.Items.IndexOf(ReadIni("BTBaudrate", "btbaudrate", ""));

        }