RM.Common/DotNetFile/DirFileHelper.cs

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using System;
using System.IO;
using System.Text;
using System.Web;

namespace RM.Common.DotNetFile
{
    public static class DirFileHelper
    {
        public static bool IsExistDirectory(string directoryPath)
        {
            return Directory.Exists(directoryPath);
        }

        public static bool IsExistFile(string filePath)
        {
            return File.Exists(filePath);
        }

        public static string[] GetFileNames(string directoryPath)
        {
            if (!DirFileHelper.IsExistDirectory(directoryPath))
            {
                throw new FileNotFoundException();
            }
            return Directory.GetFiles(directoryPath);
        }

        public static string[] GetDirectories(string directoryPath)
        {
            string[] directories;
            try
            {
                directories = Directory.GetDirectories(directoryPath);
            }
            catch (IOException ex)
            {
                throw ex;
            }
            return directories;
        }

        public static string[] GetFileNames(string directoryPath, string searchPattern, bool isSearchChild)
        {
            if (!DirFileHelper.IsExistDirectory(directoryPath))
            {
                throw new FileNotFoundException();
            }
            string[] files;
            try
            {
                if (isSearchChild)
                {
                    files = Directory.GetFiles(directoryPath, searchPattern, SearchOption.AllDirectories);
                }
                else
                {
                    files = Directory.GetFiles(directoryPath, searchPattern, SearchOption.TopDirectoryOnly);
                }
            }