Adding a number(from a textBox) to a list box

vb6 Ireland
  • 12 years ago

    Hi Folks,

    I am trying to create a small vB program that the user can enter a number in a text box and then add it to a list box.

    Click Add to add this number to a list of numbers (a list box).

    Click Remove to remove a selected number from the list of numbers.

    Click Remove All to remove all numbers from the list

     

    Validation

             When adding a value to the list, you must validate that the value is actually a number.

             If it is not a number, clear the text box and allow the user to enter another number immediately (i.e. put focus back to the text box).

             Ensure that clicking Remove does not throw an error if there are no numbers in the list or if nothing is selected in the list.

     

    I seem to be running into problems when trying to add it to the list box. Is this a data type problem.

    Any help would be appreciated!

  • 12 years ago

    Hi,

    Check This

    Private Sub cmdAdd_Click()
    If Me.txtInput <> "" And IsNumeric(Me.txtInput) Then
    Me.lstNum.AddItem Me.txtInput
    Else
    Me.txtInput.SetFocus
    MsgBox "Please enter a number"
    Me.txtInput = ""
    End If
    End Sub







    Private Sub cmdRem_Click()
    If Me.lstNum.ListCount = 0 Then
    MsgBox "There are no items to remove"
    Else
    If Me.lstNum <> "" Then
    Me.lstNum.RemoveItem Me.lstNum.ListIndex
    Else
    MsgBox "Please select an item"
    End If
    End If
    End Sub









    Private Sub cmdRemAll_Click()
    If Me.lstNum.ListCount = 0 Then
    MsgBox "There are no items to remove"
    Else
    Me.lstNum.Clear
    End If
    End Sub







    Hope this works for you.

  • 12 years ago

    Thanks Kassem,

    Worked well(with slight mod), your bush joke was funny tho!

    P

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