关于word文档的数据库存取

本人是将要存取的Word文档信息在数据库中设置成image类型
blob image 16 即为定义的文档变量

////////////////////////////////////////////////////
input a word document into the sql-server storage
notice :
 the type of word document in sql-server database is image
 the table structure in sql-serve
blob表

id int 4 0
name char 50
blob image 16
type char 60

////////////////////////////////////////////////////
    protected void Button1_Click(object sender, EventArgs e)
    {
 //File1 is a component of c# is Fileupload

        Stream imgdatastream = File1.PostedFile.InputStream;
        int imgdatalen = File1.PostedFile.ContentLength;
        string imgtype = File1.PostedFile.ContentType;
        string name = this.File1.PostedFile.FileName;

        byte[] imgdata = new byte[imgdatalen];
        int n = imgdatastream.Read(imgdata, 0, imgdatalen);
        string connstr = "Data Source=LIU;Initial Catalog=YJSBDB;User ID=sa";
        SqlConnection connection = new SqlConnection(connstr);
        SqlCommand command = new SqlCommand("INSERT INTO blob(name,type,blob) VALUES ( @imgtitle, @type,@blob )", connection);
        SqlParameter paramTitle = new SqlParameter("@imgtitle", SqlDbType.VarChar, 50);
        paramTitle.Value = name;
        command.Parameters.Add(paramTitle);
        SqlParameter paramData = new SqlParameter("@blob", SqlDbType.Image);
        paramData.Value = imgdata;
        command.Parameters.Add(paramData);
        SqlParameter paramType = new SqlParameter("@type", SqlDbType.VarChar, 50);
        paramType.Value = imgtype;
        command.Parameters.Add(paramType);
        connection.Open();
        int numRowsAffected = command.ExecuteNonQuery();
        connection.Close();
    }

//////////////////////////////////////////////////////////////
output the word document from sql-server database
//////////////////////////////////////////////////////////////
    protected void Page_Load(object sender, EventArgs e)
    {
        string imgid = this.Request.QueryString.Get("ID");
        //Request.QueryString["imgid"];
        string connstr = "Data Source=LIU;Initial Catalog=YJSBDB;User ID=sa";
        string sql = "SELECT name,blob, type FROM blob ";
        SqlConnection connection = new SqlConnection(connstr);
        SqlCommand command = new SqlCommand(sql, connection);
        connection.Open();
        SqlDataReader dr = command.ExecuteReader();
        if (dr.Read())
        {
            Response.Clear();
            Response.Buffer = true;
            Response.Charset = "GB2312";
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文
            //Response.ContentType = "application/ms-word";//设置输出文件类型为word文件。
            Response.ContentType = dr["type"].ToString();
            Response.BinaryWrite((byte[])dr["blob"]);
            string FileName = dr["name"].ToString().Trim();
            FileName = System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);
        }
        connection.Close();
    }