SuLei.Common/FileHelper.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;
using System.Web;
using System.Web.UI.WebControls;

namespace SuLei.Common
{
    /// <summary>
    /// 文件处理工具类
    /// </summary>
    public class FileHelper
    {
        /// <summary>
        /// 转换为字节数组
        /// </summary>
        /// <param name="filename">文件物理路径含文件名</param>
        /// <returns>字节数组</returns>
        public static byte[] GetBinaryFile(string fullName)
        {
            if (File.Exists(fullName))
            {
                FileStream Fsm = null;
                try
                {
                    Fsm = File.OpenRead(fullName);
                    return ConvertStreamToByteBuffer(Fsm);
                }
                catch
                {
                    return new byte[0];
                }
                finally
                {
                    Fsm.Close();
                }
            }
            else
            {
                return new byte[0];
            }
        }

        /// <summary>
        /// 流转化为字节数组
        /// </summary>
        /// <param name="theStream">流</param>
        /// <returns>字节数组</returns>
        public static byte[] ConvertStreamToByteBuffer(System.IO.Stream theStream)
        {
            int bi;
            MemoryStream tempStream = new System.IO.MemoryStream();
            try
            {
                while ((bi = theStream.ReadByte()) != -1)
                {
                    tempStream.WriteByte(((byte)bi));
                }