Parsing a DBNULL value into double

Question

I use the following line to convert the datarow value into double.

double.parse(Convert.ToString(datarow));

If the datarow

Answer 1

DBNull can't be cast or parsed to double (or int, decimal, etc), so you have to check if datarow is DBNull before trying to parse it. It should be a oneliner using the ternary operator:

doubleValue = datarow == DBNull.Value ? 0.0 : double.Parse(Convert.ToString(datarow));