สอบถามเรื่อง Session หน่อยครับ ขอละเอียดหน่อยนะครับ ขอเป็น C#

            //*** Open Connection ***'
            strConnString = "Server=localhost;UID=sa;PASSWORD=;database=mydatabase;Max Pool Size=400;Connect Timeout=600;";
            objConn = new SqlConnection();
            objConn.ConnectionString = strConnString;
            objConn.Open();

            //*** Check Login ***'
            strSQL = new StringBuilder();
            strSQL.Append(" SELECT COUNT(*) FROM member ");
            strSQL.Append(" WHERE Username = @sUsername ");
            strSQL.Append(" AND Password = @sPassword ");
            objCmd = new SqlCommand(strSQL.ToString(), objConn);
            objCmd.Parameters.Add("@sUsername", SqlDbType.VarChar).Value = this.txtUsername.Text;
            objCmd.Parameters.Add("@sPassword", SqlDbType.VarChar).Value = this.txtPassword.Text;
            intCount = (int)objCmd.ExecuteScalar();

            objConn.Close();
            objConn = null;

            if (intCount <= 0)
            {
                this.lblStatus.ForeColor = System.Drawing.Color.Red;
                this.lblStatus.Text = "Username or Password wrong!";
            }
            else
            {
                Session["strUsername"] = this.txtUsername.Text;
                Response.Redirect("frmHomeProfile.aspx");
            }