火狐自动换行 有空格

    /// <summary>
    /// 获取长度
    /// </summary>
    /// <param name="len"></param>
    /// <param name="content"></param>
    /// <returns></returns>
    protected string GetFireFox(string content,int len)
    {
        string temp = string.Empty;
        while (content.Length > len)
        {
            temp += content.Substring(0, len)+" ";
            content = content.Substring(len);
        }
        temp += content;
        return temp;
    }