asp.net - "WebSecurity" does not exist in the current context error in _AppStart.cshtml -

i getting following compilation error:

compilation error  description: error occurred during compilation of resource required service request. please review following specific error details , modify source code appropriately.   compiler error message: cs0103: name 'websecurity' not exist in current context  source error:   line 1:  @{ line 2:      if (!websecurity.initialized) line 3:      { line 4:          websecurity.initializedatabaseconnection("areaproject", "user", "userid", "emailaddress", autocreatetables: true);  source file: c:\projects\area\trunk\dotnet\area.web\area.web\_appstart.cshtml    line: 2  enter code here 

my project correctly referencing "system.web" , other files using " system.web.security" compiling fine.

the problem started when added references system.web, system.web.pages , system.web.razor application. didn't make change webmatrix.webdata or webmatrix.data.

the websecurity class being referenced here apart of webmatrix.webdata , not system.web or system.web.security. need add reference webmatrix.webdata.dll , things should @ least past runtime compiler error.

you compiler error @ runtime because views compiled when application starts first time, instead of when assemblies complied.