Null Reference Exception when int parsing DataGridView row values

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Of course the programming languge isnt wrong. Its reporting to you that you are tring to use an object reference which is in fact null.

In the section dgvSelected.Rows[i].Cells[3].Value.ToString() one of the following is null

  • dgvSelected
  • dgvSelected.Rows
  • dgvSelected.Rows[i]
  • dgvSelected.Rows[i].Cells
  • dgvSelected.Rows[i].Cells[3]
  • dgvSelected.Rows[i].Cells[3].Value

As you can see, you should be doing alot of checking to make sure none of these objets is null

Edit: Strikeout some of those, as rightfully pointed out in comments the loop would not be entered if those were null.

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