C#配置文件读取

一、首先在项目解决方案内新添加一个类，命名为iniFile.cs

1. 添加以下头文件

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

2. 定义一个全局变量路径字符串来传递路径，改路径存储的是将要读取或者写入ini文件的位置

public string path;

3.  引入kernel32.dll这个动态连接库,该动态连接库里面包含了很多WindowsAPI函，

1）继承dll文件函数的写入

/// </summary>
/// <param name="section"></param>
/// <param name="key"></param>
/// <param name="val"></param>
/// <param name="filePath"></param>
/// <returns></returns>

[DllImport("kernel32")]private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

2）继承dll文件函数的读取

/// <param name="section"></param>
/// <param name="key"></param>
/// <param name="def"></param>
/// <param name="retVal"></param>
/// <param name="size"></param>
/// <param name="filePath"></param>
/// <returns></returns>
[DllImport("kernel32")]
private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);

4. ini文件构造器

/// <param name="INIPath"></param>
public IniFile(string INIPath)
{
      path = INIPath;
}

5. 向ini文件写入数据，其中section为段名，key为键名，value为键对应的值

/// <param name="Section"></param>
/// <param name="Key"></param>
/// <param name="Value"></param>
public void WriteString(string Section, string Key, string Value)
{
        WritePrivateProfileString(Section, Key, Value, this.path);
}

6.从ini文件读取数据

/// <param name="Section"></param>
/// <param name="Key"></param>
/// <param name="Path"></param>
/// <returns></returns>
public string ReadString(string Section, string Key)
{
        StringBuilder temp = new StringBuilder(255);
        int i = GetPrivateProfileString(Section, Key, "", temp, 255, this.path);
        return temp.ToString();
}

二、代码举例

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
namespace Code
{
    static void Main()
    {
        iniFile _file;    
        WriteProfile();    
        Console.WriteLine(ReadProfile());
        public string ReadProfile()
        {
            //FilePath = %Project Path%\%Proje Name%\bin\Debug    
            string strPath = AppDomain.CurrentDomain.BaseDirectory;
            _file = new iniFile(strPath + "SerialPortData.ini");    
            string _str1 = _file.ReadString("Section1", "Key1");
            string _str2 = _file.ReadString("Section1", "Key2");
            string _str3 = _file.ReadString("Section2", "Key1");
            string _str4 = _file.ReadString("Section2", "Key2");
            return _str1 + _str2 + _str3 + _str4;
        }

        public void WriteProfile()
        {  
            string strPath = AppDomain.CurrentDomain.BaseDirectory;
            _file = new iniFile(strPath + "SerialPortData.ini"); 
            _file.WriteString("Section1", "Key1", "111");
            _file.WriteString("Section1", "Key2", "222");
            _file.WriteString("Section2", "Key1", "333");
            _file.WriteString("Section2", "Key2", "444");
        }

    }
}