How to check if Datarow value is null

Question

Tell me please is this is correct way to check NULL in DataRow if need to return a string

 Convert.ToString(row[\"Int64_id\"] ?? \"\")
         


        

Answer 1

Check if the data column is not null with DataRow.IsNull(string columnName)

if (!row.IsNull("Int64_id"))
{
  // here you can use it safety
   long someValue = (long)row["Int64_id"];
}