Btukfyl

Add a new class to your project and paste the code shown below. Compile. Drop the new control from the top of the toolbox onto your form. It shows the tabs at design time so you can easily switch between them while designing. They are hidden at runtime, use the SelectedTab or SelectedIndex property in your code to switch the page.

using System;

using System.Windows.Forms;



public class TablessControl : TabControl {

  protected override void WndProc(ref Message m) {

    // Hide tabs by trapping the TCM_ADJUSTRECT message

    if (m.Msg == 0x1328 && !DesignMode) m.Result = (IntPtr)1;

    else base.WndProc(ref m);

  }

}

tabControl1.Appearance = TabAppearance.FlatButtons;

tabControl1.ItemSize = new Size(0, 1);

tabControl1.SizeMode = TabSizeMode.Fixed;

Create new UserControl, name it for example TabControlWithoutHeader and change inherited UserControl to TabControl and add some code. Result code should look like:

public partial class TabControlWithoutHeader: TabControl

{

    public TabControlWithoutHeader()

    {

        InitializeComponent();

    }



    protected override void WndProc(ref Message m)

    {

    if (m.Msg == 0x1328 && !DesignMode)

        m.Result = (IntPtr)1;

    else

        base.WndProc(ref m);

    }

}

After compile you will have TabControlWithoutHeader control in ToolBox. Drop it on form, in designer you will see headers, but at runtime they'll be hidden. If you want to hide them in designer too, then remove && !DesignMode.

Hope that helps.

http://social.msdn.microsoft.com/Forums/windows/en-US/c290832f-3b84-4200-aa4a-7a5dc4b8b5bb/tabs-in-winform?forum=winforms

I was needing this code but in VB.net so I converted it. If someone needs this code in VB.Net there it is

Imports System

Imports System.Windows.Forms



Public Class TablessControl

           Inherits System.Windows.Forms.TabControl



    Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)

        ' Hide tabs by trapping the TCM_ADJUSTRECT message

        If (m.Msg = Convert.ToInt32("0x1328", 16) And Not DesignMode) Then

            m.Result = CType(1, IntPtr)

        Else

            MyBase.WndProc(m)

        End If

    End Sub



End Class

and thanks to @Hans Passant for the answer in C#

To complement Hans Passant's existing answer, I've found four ways to hide the arrows from the user when the numbers of tabs exceeds the width of the TablessControl. No single solution is necessarily perfect for everyone, but may be for you (or at least a combination of them).

Solution 1:

Simply enable Multiline. This will prevent the arrows from appearing in the first place. However, bear in mind, you may lose WYSIWYG in the designer because the vertical space will be adjusted downwards vertically, and controls within the TablessControl may even be 'chopped off' at the bottom (again, only in developer mode though).

Solution 2:

A more advanced solution which solves the WYSIWYG problem above is to only enable Multiline once the program gets running. Simply add this constructor to the TablessControl class:

public TablessControl()

{

    bool designMode = (LicenseManager.UsageMode == LicenseUsageMode.Designtime);

    if (!designMode) Multiline = true;      

}

To the developer, they will still appear as a single line of tabs.

Solution 3:

Decrease the font size of the TablessControl. Each tab should shrink accordingly. Since the user never gets to see the tabs, it shouldn't matter much if you set the font sizes to even 4pt.

However be careful, because the TablessControl's contents may also be resized. If this happens, re-edit the font size for each widget inside, and at that point, they'll thankfully stay at that size even if you then decide to re-change the main TablessControl's font size again.

This approach also has the advantage of more closely showing the true WYSIWYG vertical real-estate to the developer (which can look fine for the user, but may be cut off slightly at the bottom in the designer due to the height of the tabs).

This solution can be combined with Solution 1 and 2 for accumulated advantages.

Solution 4:

This solution isn't necessarily so great if any of the tabs have text which are long. Thanks to Hans for suggesting it.

First set the TablessControl's SizeMode to 'Fixed', and then reduce the TablessControl's ItemSize Width property to a smaller number to reduce each tab's width. Feel free also to adjust the ItemSize Height property to help address the aforementioned WYSIWYG issue, though Solution 3 may be more helpful for that problem.

This solution can be combined with the above solutions to further accumulate advantages.

If you really want to do this, yo can do something like this

 tcActionControls.Region = new Region(new RectangleF(

             tbPageToShow.Left, 

               tbPageToShow.Top, 

                 tbPageToShow.Width, 

                    tbPageToShow.Height)

);

Where tcActionControls is your TabControl and tbPageToShow is a TabPage to show in this precise moment.

Should work for you.

Regards.

You can try removing the TabPage from the TabPageCollection :

TabControl.TabPageCollection tabCol = tabControl1.TabPages;

        foreach (TabPage tp in tabCol)

        {

           if(condition)

            { 

              tabCol.Remove(tp);

            }

        }

This solution appears to work well -
How to hide tabs in the tab control?

1. Insert Tabcontrol into a form, the default name being tabcontrol1.



2. 
   

   Ensure that tabcontrol1 is selected in the Properties pane in visual studio and change the following properties:

   
   
   

   a. Set Appearance to Buttons

   
   
   

   b. Set ItemSize 0 for Width and 1 for Height

   
   
   

   c. Set Multiline to True

   
   
   

   d. Set SizeMode to Fixed

   
   

This is best done after your have finished your design time tasks as it hides them in the designer as well - making it difficult to navigate!