文件帮助类

public class FileHelper
{
/// <summary>
/// 保存为不带Bom的文件
/// </summary>
/// <param name="TxtStr"></param>
/// <param name="tempDir">格式:a/b.htm,相对根目录</param>
public static void SaveFile(string TxtStr, string tempDir)
{
SaveFile(TxtStr, tempDir, true);
}
/// <summary>
/// 保存文件内容,自动创建目录
/// </summary>
/// <param name="TxtStr"></param>
/// <param name="tempDir">格式:a/b.htm,相对根目录</param>
/// <param name="noBom"></param>
public static void SaveFile(string TxtStr, string tempDir, bool noBom)
{
try
{
// CreateDir(GetFolderPath(true, tempDir));
System.IO.StreamWriter sw;
if (noBom)
sw = new System.IO.StreamWriter(tempDir, false, new System.Text.UTF8Encoding(false));
else
sw = new System.IO.StreamWriter(tempDir, false, System.Text.Encoding.UTF8);
sw.Write(TxtStr);
sw.Close();
}
catch (Exception ex)
{
throw ex;
}
}

/// <summary>
/// 判断文件是否存在
/// </summary>
/// <param name="file">格式:a/b.htm,相对根目录</param>
/// <returns></returns>
public static bool FileExists(string file)
{
if (File.Exists(file))
return true;
else
return false;
}
/// <summary>
/// 创建目录
/// </summary>
/// <param name="dir">物理路径</param>
public static void CreateDir(string dir)
{
if (dir.Length == 0) return;
if (!System.IO.Directory.Exists(dir))
System.IO.Directory.CreateDirectory(dir);
}
/// <summary>
/// 创建目录路径
/// </summary>
/// <param name="folderPath">物理路径</param>
public static void CreateFolder(string folderPath)
{
if (!System.IO.Directory.Exists(folderPath))
System.IO.Directory.CreateDirectory(folderPath);
}
/// <summary>
/// 复制文件
/// </summary>
/// <param name="file1"></param>
/// <param name="file2"></param>
/// <param name="overwrite">如果已经存在是否覆盖？</param>
public static void CopyFile(string file1, string file2, bool overwrite)
{
if (System.IO.File.Exists(file1))
{
if (overwrite)
System.IO.File.Copy(file1, file2, true);
else
{
if (!System.IO.File.Exists(file2))
System.IO.File.Copy(file1, file2);
}
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="FilePath">文件物理路径</param>
public static void DelFile(string FilePath)
{
if (System.IO.File.Exists(FilePath))
{
System.IO.File.Delete(FilePath);
}
}
/// <summary>
/// 保存文件，自动创建文件
/// </summary>
/// <param name="buff">字节内容</param>
/// <param name="path">物理路径</param>
public static void SaveFile(byte[] buff, string path)
{
try
{
System.IO.File.WriteAllBytes(path, buff);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 读取文件返回字节数组
/// </summary>
/// <param name="path">物理路径</param>
public static byte[] ReadFile(string path)
{
try
{
return System.IO.File.ReadAllBytes(path);

}
catch (Exception ex)
{
throw ex;
}
}
}