[mpi] random thoughts

Get current SP user login name by SPContext.Current.Web.CurrentUser.LoginName

login_name
-> tblCanbo.Where(strusername or adUserName).Select(intid)
-> tblCanboDonvi.Where(intidcanbo).Select(intiddonvi)
-> tbldonvitructhuoc.Where(intid).Select(strtreeid or strparentid or bitkieu)

\80\web.config

  </appSettings>
  <connectionStrings>
    <add name="TestDBConnectionString" connectionString="Data Source=longthhust-pc;Initial Catalog=TestDB;Persist Security Info=True;User ID=longth;Password=123" providerName="System.Data.SqlClient" />
    <add name="NetOffice2013_VPCPConnectionString" connectionString="Data Source=portaldb.mpi.gov.vn;Initial Catalog=NetOffice2013_VPCP;Persist Security Info=True;User ID=longth;Password=l0nTH@2016" providerName="System.Data.SqlClient" />
  </connectionStrings>
</configuration>

----
Why use hidden field?
Find out distinction between
	+ Hidden field
	+ Viewstate
	+ Postback data
	+ Nothing??