Trying to check both null and empty value in one go and shortest way

Question

I'm trying to check null or empty value in mvc view side in shortest way in one go but not able to achieve null.

i have value coming from controller in array and in view side i'm checking null or empty

controller

object o3 = ds.Tables[6].Rows[0]["pm"];
                if (o3 != null)
                {
                    string val = o3.ToString();
                    string[] values3 = val.Split('~');
                    ViewBag.values3 = values3;
                }

View side

<td>@(values3[0].IsEmpty()?0:Convert.ToInt32(values3[0]))</td>

Expected:Both null and empty value should be cheked in one go and 0 should be output if value is null or emty. Actual:Able to check only empty value. Any idea how to check both null and empty value in shortest way would be appreciated.