title: Can we use ToString() or Convert.ToString() in linq query with entity framwork
body: <p>Can we use ToString() or Convert.ToString() in-line query when working with entity framework. Will it support all DB's.(mySQL,oracle,..) or it fails with anyone</p>
  
  <pre><code>  var pop = (from po in ctx.PurchaseOrders
         select new SearchItem
          {
            id = po.PurchaseOrderID,
            label = po.SupplierID.ToString, // or   Convert.Tostring(po.SupplierID)
            category = "purchaseorder"
         }).ToList();
  </code></pre>