docs-desktop/dotnet-desktop-guide/framework/winforms/controls/how-to-align-a-control-to-the-edges-of-forms.md

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title	ms.date	dev_langs	helpviewer_keywords	ms.assetid
How to: Align a Control to the Edges of Forms	03/30/2017	csharp vb	Dock property [Windows Forms], aligning controls (using code) forms [Windows Forms], aligning controls controls [Windows Forms], aligning on forms custom controls [Windows Forms], docking using code	5994cb59-242b-4e75-bd0e-62879c34d702

How to: Align a Control to the Edges of Forms

You can make your control align to the edge of your forms by setting the xref:System.Windows.Forms.Control.Dock%2A property. This property designates where your control resides in the form. The xref:System.Windows.Forms.Control.Dock%2A property can be set to the following values:

Setting	Effect on your control
xref:System.Windows.Forms.DockStyle.Bottom	Docks to the bottom of the form.
xref:System.Windows.Forms.DockStyle.Fill	Fills all remaining space in the form.
xref:System.Windows.Forms.DockStyle.Left	Docks to the left side of the form.
xref:System.Windows.Forms.DockStyle.None	Does not dock anywhere, and it appears at the location specified by its xref:System.Windows.Forms.Control.Location%2A property.
xref:System.Windows.Forms.DockStyle.Right	Docks to the right side of the form.
xref:System.Windows.Forms.DockStyle.Top	Docks to the top of the form.

There is design-time support for this feature in Visual Studio.

Set the Dock property for your control at run time

Set the xref:System.Windows.Forms.Control.Dock%2A property to the appropriate value in code.

' To set the Dock property internally.
Me.Dock = DockStyle.Top
' To set the Dock property from another object.
UserControl1.Dock = DockStyle.Top

// To set the Dock property internally.
this.Dock = DockStyle.Top;
// To set the Dock property from another object.
UserControl1.Dock = DockStyle.Top;

See also

• xref:System.Windows.Forms.Control.Dock%2A?displayProperty=nameWithType
• xref:System.Windows.Forms.Control.Anchor%2A?displayProperty=nameWithType
• Developing Custom Windows Forms Controls with the .NET Framework
• How to: Anchor and Dock Child Controls in a FlowLayoutPanel Control
• How to: Anchor and Dock Child Controls in a TableLayoutPanel Control
• AutoSize Property Overview