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Form.MaximumSize Property

Gets the maximum size the form can be resized to.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
public override Size MaximumSize { get; set; }

Property Value

Type: System.Drawing.Size
A Size that represents the maximum size for the form.
ExceptionCondition
ArgumentOutOfRangeException

The values of the height or width within the Size object are less than zero.

This property enables you to limit the size of a form to a specified maximum size. You can use this feature when displaying multiple windows at the same time, to ensure that a single window does not cause other windows to be hidden. If this property is set to a Size object that is 0 in height and 0 in width, the form will have no maximum size beyond the limits set by Windows.

The following code example demonstrates setting the MaximumSize property.

	public Form1() : base()
	{        

		//This call is required by the Windows Form Designer.
		InitializeComponent();

		//Set the maximum size, so if user maximizes form, it  
		//will not cover entire desktop.   
		this.MaximumSize = new System.Drawing.Size(500, 500);


	}

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, 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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