手动更新数据库表值没有反映在网页 - aspnet mvc

i noticed some wierd problem i.e i have built a web page on which information comes from database table named "school", when i change some data in that table manually from mssql the web page data is still same as previous, its not gettin' changed, i dn't know how it is possible.i noticed some wierd problem i.e i have built a