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  • 图片的存取

     //存图片到DB
        private void button1_Click(object sender, EventArgs e)
        {
            Stream ms;
            byte[] picbyte;
            OpenFileDialog ofdSelectPic = new OpenFileDialog();
            ofdSelectPic.ShowDialog();
            string f = ofdSelectPic.FileName;

            ms = ofdSelectPic.OpenFile();
            picbyte = new byte[ms.Length];
            ms.Position = 0;
            ms.Read(picbyte, 0, Convert.ToInt32(ms.Length));

            SqlConnection conn = new SqlConnection("server=.;uid=sa;pwd=;database=s");
            conn.Open();
            string sqlstring = "insert into ttt(image) values(@img)";
            SqlCommand cmd = new SqlCommand(sqlstring, conn);
            cmd.Parameters.Add("@img", SqlDbType.Image, picbyte.Length).Value = picbyte;

            cmd.ExecuteNonQuery();
            conn.Close();
        }
        //由数据取图片

        private void button2_Click(object sender, EventArgs e)
        {
            SqlConnection conn = new SqlConnection("server=.;uid=sa;pwd=;database=s");
            conn.Open();
            string strSql = "select image from ttt ";
            SqlCommand cmd = new SqlCommand(strSql, conn);
            SqlDataReader sdr = cmd.ExecuteReader();
            sdr.Read();
            MemoryStream ms = new MemoryStream((byte[])sdr[0]);
            Image image = Image.FromStream(ms);
            sdr.Close();
            conn.Close();
            pictureBox1.Image = image;
        }

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  • 原文地址:https://www.cnblogs.com/glume/p/1993483.html
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