public void WriteAllLines(string fileName, string[] lines)
{
var sb = new StringBuilder();
sb.Append(lines[0]);
for (int i = 1; i < lines.Length; i++)
{
sb.Append("\r\n" + lines[i]);
}
string s = sb.ToString();
byte[] bin = Encoding.Default.GetBytes(s);
var f = new File {FileName = fileName, Content = bin};
SaveFile(f);
}