.net操作系统文件（ini与dat）的帮助类

.net操作系统文件（ini与dat）的帮助类

using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;

using System.IO;
using System.Data;

/// <summary>
/// edit by: 201206.14.1535
/// </summary>
public class Ini
{
    /// <summary>
    /// 读
    /// </summary>
    /// <param name="section">INI文件中的段落名称</param>
    /// <param name="key">INI文件中的关键字</param>
    /// <param name="def">无法读取时候时候的缺省数值</param>
    /// <param name="retVal">读取数值</param>
    /// <param name="size">数值的大小</param>
    /// <param name="filePath">INI文件的完整路径和名称</param>
    /// <returns></returns>
    [DllImport("kernel32")]
    private static extern int GetPrivateProfileString(String section, String key, String def, StringBuilder retVal, int size, String filePath);
    /// <summary>
    /// 写
    /// </summary>
    /// <param name="section">INI文件中的段落</param>
    /// <param name="key">INI文件中的关键字</param>
    /// <param name="val">INI文件中关键字的数值</param>
    /// <param name="filePath">INI文件的完整的路径和名称</param>
    /// <returns></returns>
    [DllImport("kernel32")]
    private static extern long WritePrivateProfileString(String section, String key, String val, String filePath);

    public Ini() { }

    /// <summary>
    /// 构造方法
    /// </summary>
    /// <param name="INIPath">文件路径</param>
    public Ini(string Path)
    {
        Ini.Path = Path;
    }

    #region 类的对象
    private static string Path = "";

    /// <summary>
    /// 读
    /// </summary>
    /// <param name="section">项目名称(如 [TypeName] )</param>
    /// <param name="key">键</param>
    /// <returns></returns>
    public string get_value(String section, String key)
    {
        string result = "";
        try
        {
            result = Ini.get_value(section, key, Path);
        }
        catch (Exception ex)
        {
        }
        return result;
    }
    /// <summary>
    /// 写
    /// </summary>
    /// <param name="section">项目名称(如 [TypeName] )</param>
    /// <param name="key">键</param>
    /// <param name="val">值</param>
    /// <returns></returns>
    public bool set_value(String section, String key, String val)
    {
        bool resultFlag = false;
        try
        {
            resultFlag = Ini.set_value(section, key, val, Path);
        }
        catch (Exception ex)
        {
        }
        return resultFlag;
    }

    #endregion

    #region 类 静态
    /// <summary>
    /// 功能: 获取节点的值
    /// </summary>
    /// <param name="section">项目名称(如 [TypeName] )</param>
    /// <param name="key">键</param>
    /// <param name="file"></param>
    /// <returns></returns>
    public static String get_value(String section, String key, string file)
    {
        StringBuilder builder = new StringBuilder(1024);
        try
        {
            GetPrivateProfileString(section, key, "", builder, 1024, file);
            if (builder.ToString() == "")
            {
                set_value(section, key, "", file);
            }
        }
        catch (Exception ex)
        {
        }
        return builder.ToString();
    }

    /// <summary>
    /// 功能: 给节点赋值
    /// </summary>
    /// <param name="section">项目名称(如 [TypeName] )</param>
    /// <param name="key">键</param>
    /// <param name="val">值</param>
    /// <param name="file"></param>
    /// <returns></returns>
    public static bool set_value(String section, String key, String val, string file)
    {
        try
        {
            WritePrivateProfileString(section, key, val, file);
            return true;
        }
        catch (Exception ex)
        {
            return false;
        }
    }
    #endregion

    /// <summary>
    /// 创建INI配置文件
    /// </summary>
    /// <param name="fileName">ini配置文件名称</param>
    /// <returns>返回一个状态值 100成功创建 200创建失败</returns>
    public static string CreateIni(string fileName)
    {
        try
        {
            if (!Directory.Exists(Path))
            {
                Directory.CreateDirectory(Path);
            }
            string filePath = Path + "\\" + fileName;

            if (File.Exists(filePath))
            {
                File.Delete(filePath);
            }
            File.Create(filePath).Close();
            return "100";//成功创建
        }
        catch (Exception ex)
        {
            //LogHelper.WriteLogError(ex.ToString());
            return "200";//创建失败
        }
    }

    /// <summary>
    /// 验证文件是否存在
    /// </summary>
    /// <returns>布尔值</returns>
    public static bool ExistINIFile()
    {
        return File.Exists(Path);
    }
}

注：需要给文件赋予用户角色权限