My workaround solution seems silly but it prevents the error. Is there a better way to do this?
try
{
myNumber = Convert.ToInt32(InputRow.Substring(288, 9));
}
catch (FormatException e)
{
}
int.TryParse could be a good choice
int val = 0;
if(int.TryParse(InputRow.Substring(288, 9), out val))
// insert val into db
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