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Rectangle.Round Method

Converts the specified RectangleF to a Rectangle by rounding the RectangleF values to the nearest integer values.

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

public static Rectangle Round(
	RectangleF value


Type: System.Drawing.RectangleF

The RectangleF to be converted.

Return Value

Type: System.Drawing.Rectangle
The rounded interger value of the Rectangle.

The following code example demonstrates how to use the Round and Truncate methods. This example is designed for use with a Windows Form. Paste this code into a form and call the RoundingAndTruncatingRectangles method when handling the form's Paint event, passing e as PaintEventArgs.

private void RoundingAndTruncatingRectangles(PaintEventArgs e)

    // Construct a new RectangleF.
    RectangleF myRectangleF = 
        new RectangleF(30.6F, 30.7F, 40.8F, 100.9F);

    // Call the Round method.
    Rectangle roundedRectangle = Rectangle.Round(myRectangleF);

    // Draw the rounded rectangle in red.
    Pen redPen = new Pen(Color.Red, 4);
    e.Graphics.DrawRectangle(redPen, roundedRectangle);

    // Call the Truncate method.
    Rectangle truncatedRectangle = Rectangle.Truncate(myRectangleF);

    // Draw the truncated rectangle in white.
    Pen whitePen = new Pen(Color.White, 4);
    e.Graphics.DrawRectangle(whitePen, truncatedRectangle);

    // Dispose of the custom pens.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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