Programmatically Create Site Collection

Title:Programmatically Create Site Collection
Code:

void CreateSiteCollection(string requestUrl, string siteUrl, string title, string description, uint lcid, string webTemplate, string ownerLogin, string ownerName, string ownerEmail)
        {           
            SPSite site = new SPSite(requestUrl);
            SPWeb web = null;
            try
            {
                SPWebApplication webapp = site.WebApplication;
                web = site.OpenWeb();                   
                SPSiteCollection spSites = webapp.Sites;
                webapp.Sites.Add(siteUrl, title, description, lcid, webTemplate, ownerLogin, ownerName, ownerEmail);
            }
            finally
            {
                
            }   
        }