#282 – The Margin Property Stores a Thickness Value

The Margin property, used by many controls to specify a margin around the outside of the control, is inherited from the FrameworkElement class.  The Margin property’s type is Thickness, which is a structure.

The Thickness structure has four fields, defining the size of the margin along each edge of the control: Left, Top, Right, Bottom.  The value of each of these fields is specified in device independent WPF Units.

You can specify a Thickness value in XAML by listing the four values in a comma-separated string, in the following order: “left, top, right, bottom”.

	<Image Name="imgKlondike" Source="TractorSm.png" Margin="5,10,5,10"/>

You can also change the value of a Margin in code.  You can’t set individual fields in the margin, but you can set the property to a new instance of a Thickness.

            Thickness oldMargin = imgKlondike.Margin;

            imgKlondike.Margin = new Thickness(
                oldMargin.Left + 2.0,
                oldMargin.Top + 2.0,
                oldMargin.Right + 2.0,
                oldMargin.Bottom + 2.0);

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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