Retrieving/Decoding base64 string from database to image and display in image control

[David Kawlni]

Database backend:Postgre SQL
Database Name: MoviesDirectory
Table Name: picture
Column: img DataType:bytea

First, I store my uploaded images which may be either .jpg,.gif,.png with the following codes:

....
....
....
if (FileUpload1.PostedFile.ContentLength != 0)
            {
                byte[] b = new byte[FileUpload1.PostedFile.ContentLength];
                FileUpload1.PostedFile.InputStream.Read(b, 0, b.Length);
                string basestring = System.Convert.ToBase64String(b, 0, b.Length);
                TextBox1.Text = basestring;
            }
....
...
...
ConnStr = ConfigurationManager.ConnectionStrings["connect2MD"].ToString();
            Conn = new NpgsqlConnection(ConnStr);
            Conn.Open();
            try
            {
               
                strSQL = new StringBuilder();
                strSQL.Append("INSERT INTO picture(img) VALUES (@img)");
                command = new NpgsqlCommand(strSQL.ToString(), Conn);
                
                param = new NpgsqlParameter();
                param.ParameterName = "@img";
                param.Value = TextBox1.Text;
                command.Parameters.Add(param);

                command.ExecuteNonQuery();


            }
            catch (Exception ex)
            {
                throw (ex);
            }
            finally
            {
                if (Conn.State == ConnectionState.Open)
                    Conn.Close();
            }
...
...
..

The question is that - I want to retrieve back that I have already stored the base64 string and display it with the IMAGE CONTROL on my form.