asp.net 创建.txt文本问题


/// <summary>
        /// 写入日志的内容
        /// </summary>
        /// <param name="content"></param>
        public static void setWritingBlog( string content)
        {
            try
            {
                //判断文件夹是否存在
                string stringTimePath = @"D:\CpWritingBlog";
                //不存在则创建文件夹
                Directory.CreateDirectory(stringTimePath);
                FileStream fs = new FileStream(@"D:\CpWritingBlog\" + ( DateTime.Now.ToString("yyyy-MM-dd-HH mmssfff") + ".txt"), FileMode.Create, FileAccess.Write);
                StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8);//以当前网页的编码将文件内容写入流
                sw.WriteLine(content);
                sw.Close();
                fs.Close();
            }
            catch (Exception)
            {            }        }
        /// <summary>
        /// 写入日志的内容
        /// </summary>
        /// <param name="name"></param>
        /// <param name="content"></param>
        public static void setWritingBlog(string name, string content)
        {
            try
            {
                //判断文件夹是否存在
                string stringTimePath = @"D:\CpWritingBlog";
                //不存在则创建文件夹
                Directory.CreateDirectory(stringTimePath);
                FileStream fs = new FileStream(@"D:\CpWritingBlog\" + (name + DateTime.Now.ToString("yyyy-MM-dd HHmmssfff") + ".txt"), FileMode.Create, FileAccess.Write);
                StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8);//以当前网页的编码将文件内容写入流
                sw.WriteLine(content);
                sw.Close();
                fs.Close();
            }
            catch (Exception)
            {            }        }本机使用该方法 写日志可以.但是在服务器上不行。请问是不是哪里需要配置下？