Question

I want to remove the first line:

                 !string.IsNullOrEmpty(cell.Text) 

will this cause any issue?

I ran across this in some code:

                if ((id % 2 == 0)
                    && !string.IsNullOrEmpty(cell.Text)
                    && !string.IsNullOrEmpty(cell.Text.Trim())
                    )

I think the first string.IsNullOrEmpty would return false on a string with spaces
and the line with Trim() takes care of that, so the first IsNullOrEmpty is useless

But before I remove the line without the trim I thought I’d run it by the group.

Answer 1

The first IsNullOrEmpty catches null values before they throw a NullReferenceException with Trim().

However, there is a better way:

if ((id % 2 == 0) && !string.IsNullOrWhiteSpace(cell.Text))