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Graphics.MeasureString Method (String, Font)

Measures the specified string when drawn with the specified Font.

Namespace:  System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public SizeF MeasureString(
	string text,
	Font font
)

Parameters

text
Type: System.String
String to measure.
font
Type: System.Drawing.Font
Font that defines the text format of the string.

Return Value

Type: System.Drawing.SizeF
This method returns a SizeF structure that represents the size, in the units specified by the PageUnit property, of the string specified by the text parameter as drawn with the font parameter.

ExceptionCondition
ArgumentException

font is null.

The MeasureString method is designed for use with individual strings and includes a small amount of extra space before and after the string to allow for overhanging glyphs. Also, the DrawString method adjusts glyph points to optimize display quality and might display a string narrower than reported by MeasureString. To obtain metrics suitable for adjacent strings in layout (for example, when implementing formatted text), use the MeasureCharacterRanges method or one of the MeasureString methods that takes a StringFormat, and pass GenericTypographic. Also, ensure the TextRenderingHint for the Graphics is AntiAlias.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:

  • Creates a string to measure.

  • Creates a font object and sets it to Arial (16 point).

  • Creates a size object and uses it and the font object to measure the size of the string.

  • Draws a red rectangle using the measured size of the string.

  • Draws the string within the drawn rectangle.


private void MeasureStringMin(PaintEventArgs e)
{

    // Set up string.
    string measureString = "Measure String";
    Font stringFont = new Font("Arial", 16);

    // Measure string.
    SizeF stringSize = new SizeF();
    stringSize = e.Graphics.MeasureString(measureString, stringFont);

    // Draw rectangle representing size of string.
    e.Graphics.DrawRectangle(new Pen(Color.Red, 1), 0.0F, 0.0F, stringSize.Width, stringSize.Height);

    // Draw string to screen.
    e.Graphics.DrawString(measureString, stringFont, Brushes.Black, new PointF(0, 0));
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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