Programming Forums > Application Development > Visual Basic

garyelmer · Oct 23rd, 2007, 12:53 PM

I am VB 2005 Student

I'm trying to validate some user input using the code provided in the textbook.
It uses "ErrMessage" as shown in the code below:

(Toggle Plain Text)

'  Validate input for January

        If IsNumeric(txtJan.Text) Then
            Dim sngValue As Single
            sngValue = CSng(txtJan.Text)
            If sngValue < 0 Then
                txtJan.SelectAll()
                e.Cancel = True
            Else
                e.Cancel = False
            End If
        Else
            ErrMessage("The input must be a number")
            e.Cancel = True
        End If

I'm getting an Error Message saying that ErrMessage is not declared and the textbook doesn't have any details about this statement. What's wrong?
I could use MessageBox.Show("blah blah blah") but the textbook uses ErrMessage as shown above.

Gary

Oct 23rd, 2007, 12:53 PM	#1
garyelmer Newbie Join Date: Oct 2007 Posts: 8 Rep Power: 0	'ErrMessage' is not declared I am VB 2005 Student I'm trying to validate some user input using the code provided in the textbook. It uses "ErrMessage" as shown in the code below: (Toggle Plain Text) ' Validate input for January If IsNumeric(txtJan.Text) Then Dim sngValue As Single sngValue = CSng(txtJan.Text) If sngValue < 0 Then txtJan.SelectAll() e.Cancel = True Else e.Cancel = False End If Else ErrMessage("The input must be a number") e.Cancel = True End If ' Validate input for January If IsNumeric(txtJan.Text) Then Dim sngValue As Single sngValue = CSng(txtJan.Text) If sngValue < 0 Then txtJan.SelectAll() e.Cancel = True Else e.Cancel = False End If Else ErrMessage("The input must be a number") e.Cancel = True End If I'm getting an Error Message saying that ErrMessage is not declared and the textbook doesn't have any details about this statement. What's wrong? I could use MessageBox.Show("blah blah blah") but the textbook uses ErrMessage as shown above. Gary Last edited by DaWei; Oct 23rd, 2007 at 1:23 PM. Reason: Added code tags. Read the rules.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Compiling Maverik 6.2 (from C)	megamind5005	C	16	May 3rd, 2006 5:41 PM
'NULL' was not declared in this scope	titaniumdecoy	C++	9	Mar 24th, 2006 3:00 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Programming Forums > Application Development > Visual Basic

'ErrMessage' is not declared