c#生成html静态文件时出现空白行，怎么去掉utf-8中的bom

public static void UTF8RemoveBOM(string filepath)

{

UTF8RemoveBOM(filepath, filepath);

}

 

public static void UTF8RemoveBOM(string filepath, string saveAs)

{

var fs = new FileStream(filepath, FileMode.Open);

var len = fs.Length;

var buffer = new byte[len];

fs.Read(buffer, 0, (int)len);

fs.Close();

if (buffer[0] != 0xEF || buffer[1] != 0xBB || buffer[2] != 0XBF) return;

var fsw = new FileStream(saveAs, FileMode.Create, FileAccess.ReadWrite);

fsw.Write(buffer, 3, (int)len - 3);

fsw.Close();

}