Question: grandTotal = float.Parse ( fields [ 2 ] . Trim ( ) ) * float.Parse ( fields [ 3 ] . Trim ( ) )

grandTotal = float.Parse(fields[2].Trim())* float.Parse(fields[3].Trim()); When I run the code and click on the combo box in my UIi get a runtime error on this line saying "'Index was outside the bounds of the array."

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