Sizing a label properly [Resolved]

[mendhak]

I'm trying to create a custom messagebox. The MessageBox's form obviously contains a label.

Just like the Windows MessageBox:
The text in the label could be of any length.
The label is of fixed width.
The label can have varying height.

The third point is the problem right now, I don't know how to make it have a varying height, I'd like to make it size itself accordingly with the text in there.


Here is what I tried:

Dim _tmp_Graphics As System.Drawing.Graphics
 
 
            Dim [hl=yellow]_tmp_SizeF As New System.Drawing.SizeF(_tmp_Graphics.MeasureString(_lbl.Text, _lbl.Font))[/hl]
 
            Dim _lblSize_Height As Single
            Dim _lblSize_Width As Single
 
            _lblSize_Height = _tmp_SizeF.Height
            _lblSize_Width = _tmp_SizeF.Width
 
            .Size = New System.Drawing.Size(_lblSize_Width, _lblSize_Height)

_lbl is a System.Windows.Forms.Label.

This errors out with a

NullReferenceException
Object reference not set to an instance of an object.

on the yellow, highlighted line above.

I can see that _tmp_Graphics = Nothing, but System.Drawing.Graphic's New() is private.

Really not sure if this is even the right approach.

Guidance, please.