C#封装二进制文件处理

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.IO;

namespace MyQuery.Utils
{
/// <summary>
/// 封装二进制文件处理
/// by 贾世义 2011-8-21
/// </summary>
public static class FileHelper
{
/// <summary>
/// 获得文件数据
/// </summary>
/// <param name="fileName">完整路径文件名</param>
/// <returns></returns>
public static byte[] GetContent(string fileName)
{
byte[] result = null;
if (File.Exists(fileName))
{
FileStream fs = new FileStream(fileName, FileMode.Open);
result = new byte[fs.Length];
int offset = 0;
while (offset < fs.Length)
{
int count = 1024;
if (fs.Length < offset + count)
{
count = Convert.ToInt32(fs.Length - offset);
}
fs.Read(result, offset, count);
offset += count;
}
fs.Close();
}
return result;
}
/// <summary>
/// 将内容写入文件
/// </summary>
/// <param name="name">完整文件名</param>
/// <param name="content">内容</param>
/// <param name="isCover">是否覆盖存在文件</param>
public static void WriteToFile(string name, byte[] content, bool isCover)
{
FileStream fs = null;
try
{
if (!isCover && File.Exists(name))
{
fs = new FileStream(name, FileMode.Append, FileAccess.Write);
}
else
{
fs = new FileStream(name, FileMode.Create, FileAccess.Write);
}
BinaryWriter br = new BinaryWriter(fs);
br.Write(content);
br.Flush();
br.Close();
}
finally
{
if (fs != null)
{
fs.Close();
}
}

}
}
}

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