Hide Tab Header on C# Tabcontrol

How do I create a Tab Control with no Tab Header in Windows form?

Use following code to hide the tabs or set these properties in design.

    tabControl.Appearance = TabAppearance.FlatButtons;
    tabControl.ItemSize = new Size(0, 1);
    tabControl.SizeMode = TabSizeMode.Fixed;

Hide Tab Header on C# TabControl

You can replace tabcontrol with a hand made panel that mimic like you want:

class MultiPagePanel : Panel
{
  private int _currentPageIndex;
  public int CurrentPageIndex
  {
    get { return _currentPageIndex; }
    set
    {
      if (value >= 0 && value < Controls.Count)
      {
        Controls[value].BringToFront();
        _currentPageIndex = value;
      }
    }
  }

  public void AddPage(Control page)
  {
    Controls.Add(page);
    page.Dock = DockStyle.Fill;
  }
}

And then add pages and set current visible page:

MultiPagePanel p;

// MyTabPage is a Control derived class that represents one page on your form.
MyTabPage page = new MyTabPage(); 
p.AddPage(page);

p.CurrentPageIndex = 0;

Hide the TabControl header

Style s = new Style();
s.Setters.Add(new Setter(UIElement.VisibilityProperty, Visibility.Collapsed));
tabControl.ItemContainerStyle = s;

Hide only Tab Header and not TabItem on count 1

Set the Visibility property of the ItemContainerStyle to Collapsed:

<TabControl ItemsSource="{Binding myObservableCollection}">
    <TabControl.ItemContainerStyle>
        <Style TargetType="TabItem">
            <Setter Property="Visibility" Value="Collapsed" />
        </Style>
    </TabControl.ItemContainerStyle>
    <TabControl.ContentTemplate>
        <DataTemplate>
            <TextBlock>content...</TextBlock>
        </DataTemplate>
    </TabControl.ContentTemplate>
</TabControl>

How to hide TabPage from TabControl

No, this doesn't exist. You have to remove the tab and re-add it when you want it. Or use a different (3rd-party) tab control.

WinForms Hiding TabControl Headers

Put the tabcontrol in a panel and fixate it so it hides the headers.
Easiest is to do it in the code behind (or create a custom control that does this):

Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Dim bordersize As Integer = 3 'could'nt find this on the control.

    Dim ControlSize As New Size(437, 303) ' the size you want for the tabcontrol
    Dim ControlLocation As New Point(10, 10) 'location

    Dim p As New Panel
    p.Size = ControlSize
    p.Location = ControlLocation
    Me.Controls.Add(p)

    Dim t As New TabControl
    t.Size = ControlSize
    p.Controls.Add(t)

    t.Left = -t.Padding.Y
    t.Top = -(t.ItemSize.Height + t.Padding.Y)
    p.Width = t.Width - t.Padding.X
    p.Height = t.Height - (t.ItemSize.Height + t.Padding.Y + bordersize)
    t.Anchor = AnchorStyles.Bottom Or AnchorStyles.Left Or AnchorStyles.Right Or AnchorStyles.Top

    AddHandler t.GotFocus, AddressOf ignoreFocus
End Sub

Private Sub ignoreFocus(ByVal sender As Object, ByVal e As System.EventArgs)
    Dim t As TabControl = CType(sender, TabControl)
    If t.SelectedIndex > -1 Then t.TabPages(t.SelectedIndex).Focus()
End Sub

Now, if you resize the panel, the tabcontrol will follow and only show the tabpage-area.

Hide Tab headers in WPF TabControl

You can use a Style applied to TabItem with a DataTrigger that will collapse it if the parent TabControl has only one item:

<Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:sys="clr-namespace:System;assembly=mscorlib"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid.Resources>
        <x:Array x:Key="tabData" Type="{x:Type sys:String}">
            <sys:String>do</sys:String>
            <sys:String>re</sys:String>
            <sys:String>mi</sys:String>
        </x:Array>
    </Grid.Resources>
    <TabControl ItemsSource="{StaticResource tabData}">
        <TabControl.ItemContainerStyle>
            <Style TargetType="{x:Type TabItem}">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type TabControl}}, Path=Items.Count}" Value="1">
                        <Setter Property="Visibility" Value="Collapsed"/>
                    </DataTrigger>
                </Style.Triggers>                
            </Style>
        </TabControl.ItemContainerStyle>
    </TabControl>
</Grid>

If you want to get rid of the TabControl completely if there is only one item, that logic should probably be at a higher level.

Hiding tab headers in tabControl in winforms

I have created a project and implemented the tab control as given in your example as follows:

class TablessTabControl : 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);
    }
}

Then upon rebuilding the project I add my new TablessTabControl to a test form using the designer. Within the designer, I can switch between the tabs using the visible headers.

At runtime, the headers disappear as intended. I have two tabs; I am able to select between the tabs by using the following code:

// Selects the first tab:
tablessTabControl1.SelectedIndex = 0;

// Selects the second tab:
tablessTabControl1.SelectedIndex = 1;

---

Additionally, in Form1.Designer.cs, I have line 48 as follows:

this.tablessTabControl1.SelectedIndex = 0;

which poses no difficulty for me.

Have you tried closing all documents, cleaning the solution, rebuilding and reopening the designer?

Hiding TabPage from TabControl in Winform application

Try This. It will hide and show the TabPages without a Control lost.

Hide TabPage and Remove the Header:

this.tabPage1.Hide();
this.tabPage3.Hide();
this.tabPage5.Hide();
tabControl1.TabPages.Remove(tabPage1);
tabControl1.TabPages.Remove(tabPage3);
tabControl1.TabPages.Remove(tabPage5);

Show TabPage and Visible the Header:

tabControl1.TabPages.Insert(0,tabPage1);
tabControl1.TabPages.Insert(2, tabPage3);
tabControl1.TabPages.Insert(4, tabPage5);
this.tabPage1.Show();
this.tabPage3.Show();
this.tabPage5.Show();
tabControl1.SelectedTab = tabPage1;

Disable and hide a TabPage

You maybe missing the obvious because neither of the following removes/changes the look of the tab

        tabPage1.Enabled = false; // this disables the controls on it
        tabPage1.Visible = false; // this hides the controls on it.

Neither remove the tab from the list at the top.

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