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TabControl.Alignment Property

Gets or sets the area of the control (for example, along the top) where the tabs are aligned.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
public TabAlignment Alignment { get; set; }

Property Value

Type: System.Windows.Forms.TabAlignment
One of the TabAlignment values. The default is Top.
ExceptionCondition
InvalidEnumArgumentException

The property value is not a valid TabAlignment value.

When the Alignment property is set to Left or Right, the Multiline property is automatically set to true.

When you set the Appearance property to FlatButtons, it only appears as such when the Alignment property is set to Top. Otherwise, the Appearance property displays as if set to the Buttons value.

When you set the Appearance property to Buttons, you must also set the Alignment property to Top so that the buttons display correctly.

NoteNote

When you set the Appearance property to Buttons, you must also set the Alignment property to Top so that the tab page contents display correctly. Additionally, when visual styles are enabled, and the Alignment property is set to a value other than Top, the tab contents may not render correctly.

The following code example creates a TabControl with three TabPage objects. The Alignment property is set to Left, which positions the tabs of tabControl1 on the left side.

Use the System.Drawing and System.Windows.Forms namespaces for this example.

using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private TabControl tabControl1;
    private TabPage tabPage1;
    private TabPage tabPage2;
    private TabPage tabPage3;

    private void MyTabs()
    {
        this.tabControl1 = new TabControl();
        this.tabPage1 = new TabPage();
        this.tabPage2 = new TabPage();
        this.tabPage3 = new TabPage();

        // Positions tabs on the left side of tabControl1. 
        this.tabControl1.Alignment = System.Windows.Forms.TabAlignment.Left;

        this.tabControl1.Controls.AddRange(new Control[] {
            this.tabPage1,
            this.tabPage2,
            this.tabPage3});
        this.tabControl1.Location = new Point(16, 24);
        this.tabControl1.SelectedIndex = 0;
        this.tabControl1.Size = new Size(248, 232);
        this.tabControl1.TabIndex = 0;

        this.tabPage1.TabIndex = 0;
        this.tabPage2.TabIndex = 1;
        this.tabPage3.TabIndex = 2;

        this.Size = new Size(300,300);
        this.Controls.AddRange(new Control[] {
            this.tabControl1});
    }

    public Form1()
    {
        MyTabs();
    }

    static void Main() 
    {
        Application.Run(new Form1());
    }
}

.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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