create table test (
id integer primary key,
files byte)   

            string ConnectionString = @"MyString";


            Stream myStream;
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.ShowDialog();
            myStream = openFileDialog1.OpenFile();

            byte[] buf = new byte[myStream.Length];
            
            myStream.Read(buf,  0 , (int)myStream.Length);
            myStream.Close();

            
            OdbcConnection con = new OdbcConnection(ConnectionString);
            string sql = @"insert into test values (?,?)";
            OdbcCommand com = new OdbcCommand(sql, con);
            com.Parameters.Add("@p1", OdbcType.Int).Value =  1 ;
            com.Parameters.Add("@p2", OdbcType.Binary).Value =buf;
            
            
            

            con.Open();
            com.ExecuteNonQuery();
            con.Close();

Illegal attempt to convert Text/Byte blob type.

SQL data type out of range.

OdbcType.Image