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fazer galeria em asp


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estou a precisar de ajuda para ler imagens da base de dados com valor binario.

estou a usar este codigo mas queria ver todas as imagens existentes na BD em vez de ver so a ultima

protected void Page_Load(object sender, EventArgs e)
//		   int imagemID = Convert.ToInt32(Request.QueryString["id"]);
	    //nomeArquivo], [horaUpload], [MIME], [imagem]
	    using (SqlConnection Conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))

		    string SQL1 = ("Select count(*) from Imagens");
		    SqlCommand myCommandCount = new SqlCommand(SQL1, Conn);
		    int a, i = Convert.ToInt32(myCommandCount.ExecuteScalar());
		    ola.Text  = string.Format("{0}", i);
		    for (a = 1; i > a; i--)
			    const string SQL = "SELECT [MIME], [imagem] FROM [imagens] WHERE [id] = @id";
			    SqlCommand myCommand = new SqlCommand(SQL, Conn);
			    //myCommand.Parameters.AddWithValue("@id", imagemID);
			    myCommand.Parameters.AddWithValue("@id", i);
			    SqlDataReader myReader = myCommand.ExecuteReader();
			    if (myReader.Read())
				    Response.ContentType = myReader["MIME"].ToString();
			    }				    myReader.Close();

    catch (Exception ex)
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