Create Site Collection in specified database

Scenario:
Small function to create a new site collection in specified database.

Code:

function bool CreateSiteCollectionInDB(string mainSiteUrl , string databaseName )
{
bool siteCollectionCreated = false; 

SPSecurity.RunWithElevatedPrivileges(delegate()
{

SPSite siteCol = new SPSite(mainSiteUrl);

foreach (SPContentDatabase contentDB in siteCol .WebApplication.ContentDatabases)
{
  if (string.Equals(contentDB .Name, databaseName , StringComparison.InvariantCultureIgnoreCase)
  {
    if (contentDB.MaximumSiteCount <= contentDB.CurrentSiteCount)
     {
     throw new Exception("The maximum site count for the specified database has been exceeded.  Increase the maximum site count or specify another database.");
     }
    else
     {
      using (SPSite newSiteCollection = contentDB.Sites.Add("Test", "Test Site", "", 1033, "STS#0", "1", "Administrator", "admin@sandeeptraining.com"))
       {
          System.Threading.Thread.Sleep(20000);
       }
     }
       
     siteCollectionCreated = true; 
     break ;
   }
 }
}

if ( ! siteCollectionCreated )
{
   throw new Exception("Content database not found.");
}
return true ; 
}
    }

Usage:
1. You can call it from a console application
2. You can call it from an application page
3. You can call it from with in a Timer ob also