I have a ComboBox containing 5 values. An empty line, "Credit", "Debit", "Credit Settlement", and "Debit Settlement". I am trying to perform an error validation on it. If the user types anything in the ComboBox or if the selection of the empty string is made, I want to trigger an error. This is what I have now but it doesn't work. Any ideas?
If cboTypeRes.Text.Trim = "" or cboTypeRes.Text.Trim <> "Debit" Or cboTypeRes.Text.Trim <> "Credit" Or cboTypeRes.Text.Trim = "Debit Settlement" Or
cboTypeRes.Text.Trim = "Credit Settlement" Then
Thanks in advance for any recommendations or solutions.