Any way to determine the width of text when it is drawn? ASP.NET VB

Here is my line of code which draws text to the screen:

Dim TopLine1 as string = "Hello World"

graphicImage.DrawString(TopLine1, New Font("Helvetica, sans-serif", 18, FontStyle.Regular), SystemBrushes.WindowText, New Point(GetLeftMargin(TopLine1), 20))

I need to create the function GetLeftMargin which will center the text within my area, which is 440 pixels wide.   Since most fonts do not have a "fixed" width for each character, I can't simply take the number of characters and multiply by a fixed pixel width.

My hope is to pre-calculate the width of the string I am drawing, and then use that to calculate my X margin.  If I knew how wide my text image was, then I could quickly calculate the correct margin for it.   How can I pre-calculate how wide my text image is going to be?
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MajorBigDealConnect With a Mentor Commented:
arthurh88Author Commented:
thanks a bunch!  this worked too, i discovered right as you answered:

 Dim Tlength As Integer = graphicImage.MeasureString(String.Format("{0:C2}", TopLine1), New Font("Helvetica, sans-serif", 18, FontStyle.Regular)).Width
Cool, thanks for sharing your solution.
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