c# - ProfileCommon in WAP working at run-time but not at compile-time -

i have web application project , implemented profile properties in web.config. when found couldn't access profilecommon object googled , found workarounds:

• how list of user/profile membership provider?
• how assign profile values?
• "the name profilecommon not exist in current context"
• http://forums.asp.net/t/1487719.aspx/1?profile+common+non+existant+in+asp+net+4+0+
• http://weblogs.asp.net/jgalloway/archive/2008/01/19/writing-a-custom-asp-net-profile-class.aspx

and on. nobody said have profilecommon object @ run-time. here's example:

<profile enabled="true">   <properties>     <add name="adminremark"/>     <add name="facilityid" type="system.int64" defaultvalue="1"/>   </properties> </profile> 

this line compiles , works, have hard-coded property name:

rcbfacilityid.selectedvalue =      (profilebase.create(usercurrent.username) profilebase)     .getpropertyvalue("facilityid").tostring(); 

but line doesn't compile , gives error: type or namespace name 'profilecommon' not found (are missing using directive or assembly reference?)):

rcbfacilityid.selectedvalue =      (profilebase.create(usercurrent.username) profilecommon)     .facilityid.tostring(); 

but @ run-time tried execute line in visual studio watch window , worked! event displayed type of profilebase.create(usercurrent.username) profilecommon without cast. intellisense didn't work, inspect object , saw had both profile properties defined.

i don't mind working hard-coded profile property names if it's way except custom profilecommon class, i'd explanation why profilecommon class available @ run-time , not compile-time?

profilecommon not available @ compile time because class created when application started. due properties can define inside profile element in web.config can dynamically added. see remarks in official documentation.