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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.