topic Re: If statement checking for multiple strings in Inventor Programming Forum

If statement checking for multiple strings

will_roe — Fri, 23 Apr 2021 04:47:40 GMT

Hi,

I feel like this should be simple but I've searched all I can think of to do it correctly but can't find a answer. I just want a if statement to check to see if the first character is correct and show a message box and set a parameter if it's not.

I'm getting a 1-dimensional array of String' error

ID_1_CHAR = IDTAG
Dim oID1 = Left((ID_1_CHAR), 1)


If oID1 <> {"H" Or "V" Or "H"} Then
MessageBox.Show("First character must be M, H or V", "Incorrect Input")
IDTAG = "H1234"
End If

Thanks in advance.

Re: If statement checking for multiple strings

dutt.thakar — Fri, 23 Apr 2021 05:21:52 GMT

@will_roe

When you use {} bracket it is identified as an array inside iLogic or VB.Net, that is why you are getting an error, as in the first-line you are defining a variable not an array, try below code instead and see if this helps you. You need to write like shown in Bold characters, to check multiple strings.

ID_1_CHAR = Parameter("IDTAG")
Dim oID1 = Left((ID_1_CHAR), 1)


If (oID1 <> "H" Or oID1 <> "V" Or oID1 <> "H") Then
MessageBox.Show("First character must be M, H or V", "Incorrect Input")
Parameter("IDTAG") = "H1234"
End If

Hope this helps.

Re: If statement checking for multiple strings

will_roe — Tue, 27 Apr 2021 04:01:45 GMT

@dutt.thakar

It doesn't seem to be working as expected - the message box shows with any input. It seems to work fine if I have a single variable like the below.

if  oID1 <> "H" Then

So I think I've misunderstood how the statement will work? Is the below just checking if oID1 doesn't = all of the values (H, V & M) So even if oID1 = H the statement will trip up because it doesn't = V or M?

If (oID1 <> "H" Or oID1 <> "V" Or oID1 <> "M") Then

This will work for my purposes but I'm wondering if there's a more elegant way to write it?

ID_1_CHAR = Parameter("IDTAG")
Dim oID1 = Left((ID_1_CHAR), 1)


If (oID1 = "H" Or oID1 = "V" Or oID1 = "M") Then
'Insert code here
MessageBox.Show("It worked", "Title")
Else
MessageBox.Show("First character must be M, H or V", "Incorrect Input")
Parameter("IDTAG") = "H1234"
End If

Re: If statement checking for multiple strings

dutt.thakar — Tue, 27 Apr 2021 05:36:05 GMT

@will_roe

Ok, I think below is another way which is quite easy to write (Using Select Case) and understand and may serve your purpose as well.

ID_1_CHAR = Parameter("IDTAG")
Dim oID1 = Left((ID_1_CHAR), 1)

Select oID1
Case "H", "M", "V"
	MessageBox.Show("It worked", "Title")
Case Else
	MessageBox.Show("First character must be M, H or V", "Incorrect Input")
        Parameter("IDTAG") = "H1234"
End Select

See if this helps.

Re: If statement checking for multiple strings

will_roe — Tue, 27 Apr 2021 05:43:41 GMT

Awesome, thanks @dutt.thakar !