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Thread: IF, then, Else Functions errors

  1. #1

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    IF, then, Else Functions errors

    This may seem like a stupid question but I can't seem to get the IF function to work. I got it to work in an earlier section:
    Code:
     If txtSat1.Text = "" Then
                If txtSat2.Text = "" Then
                    If cbSat.CheckState = 0 Then
                        MessageBox.Show("Please Enter Hours for Saturday")
                    End If
                End If
            End If
    but with my current code here:
    Code:
    If txtSun1.Text <> Then
                cbSun.CheckState = 0
                Else If txtSun2.Text <> Then
                cbSun.CheckState = 0
            End If
    Both the "Then"s are underline blue and it says "expression expected." I have two textboxes and a checkbox. If the user types something into either one of the textboxes, then I want the checkbox to not be able to be clicked. Any help would be appreciated.

  2. #2
    Addicted Member MetalInquisitor's Avatar
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    Re: IF, then, Else Functions errors

    Quote Originally Posted by jhaag4 View Post
    This may seem like a stupid question but I can't seem to get the IF function to work. I got it to work in an earlier section:
    but with my current code here:
    Code:
    If txtSun1.Text <> Then
                cbSun.CheckState = 0
                Else If txtSun2.Text <> Then
                cbSun.CheckState = 0
            End If

    If txtSun1.Text <> (not equal to what?) Then

  3. #3

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    Re: IF, then, Else Functions errors

    OH. I thought that <> meant that the textbox.Text has something written in it by the user. Like the opposite of ""

  4. #4
    PowerPoster dunfiddlin's Avatar
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    Re: IF, then, Else Functions errors

    There is no opposite of ""!
    <> means literally 'either less than or greater than' and so 'does not equal'. In this case I imagine that what you want is

    If txtSun1.Text <> "" Then
    As the 6-dimensional mathematics professor said to the brain surgeon, "It ain't Rocket Science!"

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  5. #5
    Super Moderator Shaggy Hiker's Avatar
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    Re: IF, then, Else Functions errors

    The <> is just a nice way of saying both < or >. In other words, not equal to. C-style languages often have a != operator which may make a bit more sense if you know that the ! is the not operator (or at least one of them), so it reads as Not Equal. However, the <> convention is much more common as far as I can tell, as it seems to extend beyond programming.
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  6. #6

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    Re: IF, then, Else Functions errors

    That was it! Thank you everyone!

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