Measure a String without using a Graphics object?

Solution 1:

If you have a reference to System.Windows.Forms, try using the TextRenderer class. There is a static method (MeasureText) which takes the string and font and returns the size. MSDN Link

Solution 2:

You don't need to use the graphics object that you are using to render to do the measuring. You could create a static utility class:

public static class GraphicsHelper
{
    public static SizeF MeasureString(string s, Font font)
    {
        SizeF result;
        using (var image = new Bitmap(1, 1))
        {
            using (var g = Graphics.FromImage(image))
            {
                result = g.MeasureString(s, font);
            }
        }

        return result;
    }
}

It might be worthwile, depending on your situation to set the dpi of the bitmap as well.

Solution 3:

MeasureString method in @NerdFury answer will give a higher string width than expected.Additional info you can find here. If you want to measure only the physical length please add this two lines :

g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
result = 
  g.MeasureString(measuredString, font, int.MaxValue, StringFormat.GenericTypographic);

Solution 4:

This example does great job of illustrating the use of FormattedText. FormattedText provides low-level control for drawing text in Windows Presentation Foundation (WPF) applications. You can use it to measure the Width of a string with a particular Font without using a Graphics object.

public static float Measure(string text, string fontFamily, float emSize)
{
    FormattedText formatted = new FormattedText(
        item, 
        CultureInfo.CurrentCulture, 
        System.Windows.FlowDirection.LeftToRight, 
        new Typeface(fontFamily), 
        emSize, 
        Brushes.Black);

    return formatted.Width;
}

Include WindowsBase and PresentationCore libraries.