asp.net对图片的读写

 写图片c:\1.jpg到表cinfo中
private static void AddCinfo()
    {
        string strSql = "insert into cinfo (srvtitle,csttitle,introduction,logo) values
(@srvtitle,@csttitle,@introduction,@logo)";
        SqlParameter[] parms =
        {
            new SqlParameter("@srvtitle",SqlDbType.VarChar,30),
            new SqlParameter("@csttitle",SqlDbType.VarChar,30),
            new SqlParameter("@introduction",SqlDbType.NVarChar,500),
            new SqlParameter("@logo",SqlDbType.Image)
        };
        parms[0].Value = "旅业互动";
        parms[1].Value = "lyhd";
        parms[2].Value = "简介";
        string filePath = @"c:\1.jpg";
        FileStream fs = File.OpenRead(filePath);
        byte[] content = new byte[fs.Length];
        fs.Read(content, 0, content.Length);
        fs.Close();
        parms[3].Value = content;
        DBHelper.ExecuteNonQuery(CommandType.Text, strSql, parms);
    }
读取图片的页面 test.aspx
protected void Page_Load(object sender, EventArgs e)
    {
        string strSql = "select * from cinfo where id=1";
        SqlDataReader reader=DBHelper.ExecuteReader(CommandType.Text, strSql, null);