Custom List Definition-2010

try
{
  SPList list = null;
  using (SPSite site = new SPSite("http://yoursite/"))
  {
     using (SPWeb web = site.RootWeb)
     {
      //List Will be Created Based on this ListDefinition
- OOB Custom List Definition
      //00BFEA71-DE22-43B2-A848-C05709900100

        foreach (SPList _list in web.Lists)
        {
          if (_list.Title.Equals("TestList"))
          {
              list = _list;
          }
        }

        if (list == null)
        {
         web.AllowUnsafeUpdates = true;
         Guid listID = web.Lists.Add("TestList", //List Title
                      "This is Test List",      //List Description
                      "Lists/TestList",         //List Url
                      "00BFEA71-DE22-43B2-A848-C05709900100", //Feature Id of List definition Provisioning Feature – CustomList Feature Id
                       10778,                     //List Template Type
                     "101");      //Document Template Type .. 101 is for None

           web.Update();
           web.AllowUnsafeUpdates = false;

         }
        }


     }
    }
    catch (Exception ex)
    {

    }