I am reading data in a row using DataRow object. If there is null data in the column, then the following line of code is crashing. How can I check to see the content of the field is null before I do any other operation?

aDataRow.ItemArray[1].ToString() //fails because there is null value and Tostring() may not work.

If there is no Null value in this field, I want to convert that value to double. that part works.

Convert.ToDouble(aDataRow.ItemArray[1].ToString())

thanks
nath