[Rmclayton]

I just wanted to know how i can add a ToolTip so that i can force the user NOT to enter numbers less and 0?

I've tried tutorials everywhere but they dont do what i need.

Basically i need the textbox (ALCTextBox) to make sure that ONLY positive numbers are entered. And if they user TRIES to type a '-' it doesn't get added to the tetbox. instead a tooltip error pops up saying that they must input a positive integer.

Thank you very much for helping <3

[lucky3]

Did you try adding new ToolTip to TextChanged event handling subroutine for that textbox?

Spoiler

 Private Sub TextBox1_TextChanged(sender As System.Object, e As System.EventArgs) Handles TextBox1.TextChanged
        If Not IsNumeric(TextBox1.Text) Then
            'if text is entered
            Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Warning..."}
            myToolTip.Show("You MUST enter only positive numeric characters!!! I INSIST!!!!!!!!!!!!!!! BWAAAHAAAHAAAA!!", TextBox1, 3000)
        Else
            'it is numeric, but we need to check if it's positive
            If Not TextBox1.Text > 0 Then
                'it's not bigger then zero, that means it is 0 or negative
                Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Warning..."}
                myToolTip.Show("You MUST enter only positive numeric characters!!! I INSIST!!!!!!!!!!!!!!! BWAAAHAAAHAAAA!!", TextBox1, 3000)
            End If
        End If
    End Sub
End Class

[sela007]

There is control called tooltip, you can use this control and show tooltip anywhere and anytime on the form. You can use IsNumeric function to check whether the pressed key is number or not, if not then call

e.SuppressKeyPress = True

in the "keydown" event.

[Rmclayton]

lucky3, on 03 September 2012 - 10:44 PM, said:

Did you try adding new ToolTip to TextChanged event handling subroutine for that textbox?

Spoiler

 Private Sub TextBox1_TextChanged(sender As System.Object, e As System.EventArgs) Handles TextBox1.TextChanged
        If Not IsNumeric(TextBox1.Text) Then
            'if text is entered
            Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Warning..."}
            myToolTip.Show("You MUST enter only positive numeric characters!!! I INSIST!!!!!!!!!!!!!!! BWAAAHAAAHAAAA!!", TextBox1, 3000)
        Else
            'it is numeric, but we need to check if it's positive
            If Not TextBox1.Text > 0 Then
                'it's not bigger then zero, that means it is 0 or negative
                Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Warning..."}
                myToolTip.Show("You MUST enter only positive numeric characters!!! I INSIST!!!!!!!!!!!!!!! BWAAAHAAAHAAAA!!", TextBox1, 3000)
            End If
        End If
    End Sub
End Class

THAT WORKS!
However, is there an option that STOPS the user from entering a '-' or a letter of the alphabet? As in if they try and press 'w', the 'w' wont appear only the error?

[_HAWK_]

You need to use the keyDown or keyPress events to check the key that is being pressed and suppress the ones you don't want. Snippet found right on this web page. I use a slightly diff approach, but it will help you understand.

[Rmclayton]

_HAWK_, on 04 September 2012 - 08:25 PM, said:

You need to use the keyDown or keyPress events to check the key that is being pressed and suppress the ones you don't want. Snippet found right on this web page. I use a slightly diff approach, but it will help you understand.

Okay, i now have the opposite XD
It restricts all non-numeric inputs but has no display?! :|
Is there anyway that i can notify the user to enter positive numbers?

[lucky3]

Just add Dim myToolTip... and myToolTip.Show... lines from my previous post, after e.Handled = True line, if you're using that snippet.

This post has been edited by lucky3: 05 September 2012 - 01:52 AM

[Rmclayton]

Alrighty. That all works fine.

However. If i enter a letter it accepts it

Heres my code:

Private Sub ALCTextBox_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ALCTextBox.KeyPress
        If (e.KeyChar < "0") _
    AndAlso e.KeyChar <> ControlChars.Back AndAlso e.KeyChar <> "." Then
            e.Handled = True
            Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Error..."}
            myToolTip.Show("You must enter a positive Integer", ALCTextBox, 3000)
        ElseIf IsNumeric(ALCTextBox) Then
            e.Handled = True
            Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Error..."}
            myToolTip.Show("You must enter an Integer", ALCTextBox, 3000)
        End If
    End Sub
End Class

[ebolisa]

It appears you left out the following code on line 2 to check for alpha chars.

OrElse e.KeyChar > "9"

EDIT:

These few lines worked for me...

    If (e.KeyChar < "0") OrElse e.KeyChar > "9" _
            AndAlso e.KeyChar <> ControlChars.Back _ 
            AndAlso e.KeyChar <> "." Then

            e.Handled = True

            Dim myToolTip As New ToolTip With {.IsBalloon = True, .ToolTipTitle = "Error..."}
            myToolTip.Show("You must enter a positive Integer", Me.txbUsrName, 3000)

        End If

This post has been edited by ebolisa: 05 September 2012 - 03:55 AM

[Rmclayton]

Its all good!

Is there anyway that i can change the LOCATION of the pop-up bubble?

Its showing underneath the textbox and its distracting

This post has been edited by Rmclayton: 06 September 2012 - 09:44 PM

[_HAWK_]

MSDN can be useful when researching how to make the controls work.

ToolTip.Show()