【个人使用.Net类库】（1）INI配置文件操作类

开发接口程序时，对于接口程序配置的IP地址、端口等都需要是可配置的，而在Win Api原生实现了INI文件的读写操作，因此只需要调用Win Api中的方法即可操作INI配置文件，关键代码就是如何调用Win Api中的方法，如下所示：

#region 调用WinApi 原方法声明

        [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);



        [DllImport("kernel32")]

        private static extern int GetPrivateProfileString(string section, string key, string defVal, Byte[] retVal, int size, string filePath);

#endregion

具体代码如下所示（删除段落内容是参考苏飞论坛苏飞大神的）：

using System;

using System.Text;

using System.Runtime.InteropServices;



namespace DotNetCommon.File

{

    

    /// <summary>

    /// 类说明：INI文件读写类

    /// 编码人：鞠小军

    /// 联系方式：[email protected]

    /// </summary>

    public class IniFileHelper

    {

        /// <summary>

        /// INI文件路径

        /// </summary>

        public string Path;

        /// <summary>

        /// 屏蔽空的构造函数

        /// </summary>

        public IniFileHelper()

        {

            throw new Exception("不允许使用空的构造函数!");

        }

        /// <summary>

        /// 构造函数,参数为INI文件路径 

        /// </summary>

        /// <param name="path">INI文件的路径</param>

        public IniFileHelper(string path)

        {

            Path = path;

        }

        #region 调用WinApi 原方法声明

        [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);



        [DllImport("kernel32")]

        private static extern int GetPrivateProfileString(string section, string key, string defVal, Byte[] retVal, int size, string filePath);

        #endregion

        /// <summary>

        /// 读取INI文件

        /// </summary>

        /// <param name="section">段落</param>

        /// <param name="key">键</param>

        /// <returns></returns>

        public string IniReadValue(string section, string key)

        {

            var temp = new StringBuilder(255);

            var i = GetPrivateProfileString(section, key, "", temp, 255, Path);

            return temp.ToString();

        }



        /// <summary>

        /// 写入INI文件

        /// </summary>

        /// <param name="section">段落</param>

        /// <param name="key">键</param>

        /// <param name="value">值</param>

        public void IniWriteValue(string section, string key, string value)

        {

            WritePrivateProfileString(section, key, value, Path);

        }

        /// <summary>

        /// 清楚INI文件中所有的段落

        /// </summary>

        public void ClearAllSection()

        {

            IniWriteValue(null, null, null);

        }



        /// <summary>

        /// 清楚INI文件中指定段落内容

        /// </summary>

        /// <param name="section">段落</param>

        public void ClearSection(string section)

        {

            IniWriteValue(section, null, null);

        }



    }

}

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