二进制流数据：数据库中的文件存储与操作

StudentEntities st = new StudentEntities();
            Student st1 = new Student();
            st1.ID = 13;

            Stream stream = new FileStream("d:\\2013.doc", FileMode.Open);

            byte[] buffer = new byte[stream.Length];
            stream.Read(buffer, 0, (int)stream.Length);
            stream.Close();

            st1.er = buffer;
           // st.Student.Remove(st1);
            st.Student.Add(st1);
            st.SaveChanges();
将word保存到数据库中
this.axWebOffice1.SaveAs("c:\\aa.doc",0);利用代码生成word文档


//保存到数据库中
 using (WanWeiTiKuEntities WanweiTiku = new WanWeiTiKuEntities())
            {
                tk_KeChen Kecheng = new tk_KeChen();
                Stream stream = new FileStream("D:\\112.doc", FileMode.Open);
                byte[] buffer = new byte[stream.Length];
                stream.Read(buffer, 0, (int)stream.Length);
                stream.Close();
                Kecheng.JuanTou = buffer;
                Kecheng.KeCheng_name = "历史";
                Kecheng.KeCheng_id = 0;
                WanweiTiku.tk_KeChen.Add(Kecheng);