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ScrollableControl.DockPaddingEdges Class

Determines the border padding for docked controls.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

Public Class DockPaddingEdges
	Implements ICloneable
Dim instance As DockPaddingEdges

public class DockPaddingEdges implements ICloneable
public class DockPaddingEdges implements ICloneable

The ScrollableControl.DockPaddingEdges class creates a margin on a given edge or all edges of a docked control. You can set the width of this margin for each individual edge by setting the following properties: Bottom, Top, Left, Right. Alternatively, you can set all the edges to the same width simultaneously by setting the All property. If the size of the control is too large for its container, the control will be resized to fit in the container, minus the specified margin width.

The following code example uses the derived class, Panel. The example docks a button in a panel control and cycles through the ScrollableControl.DockPaddingEdges properties, setting each individually on the click of the button. This code requires that a Panel control and a Button have been instantiated on a form, and a class-level member variable named myCounter has been declared as a 32-bit signed integer. This code should be called on the Click event of the button.

Private Sub SetDockPadding()
    ' Dock the button in the panel.
    button1.Dock = System.Windows.Forms.DockStyle.Fill
    ' Reset the counter if it is greater than 5.
    If myCounter > 5 Then
        myCounter = 0
    End If
    ' Set the appropriate DockPadding and display
    ' which one was set on the button face. 
    Select Case myCounter
        Case 0
            panel1.DockPadding.All = 0
            button1.Text = "Start"
        Case 1
            panel1.DockPadding.Top = 10
            button1.Text = "Top"
        Case 2
            panel1.DockPadding.Bottom = 10
            button1.Text = "Bottom"
        Case 3
            panel1.DockPadding.Left = 10
            button1.Text = "Left"
        Case 4
            panel1.DockPadding.Right = 10
            button1.Text = "Right"
        Case 5
            panel1.DockPadding.All = 20
            button1.Text = "All"
    End Select
    ' Increment the counter.
    myCounter += 1
End Sub


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0